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Intro to Pod Exam 3
Lecture Notes
270
Medical
Graduate
11/07/2012

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Cards

Term
Medial
Definition
Inside aspect of leg, ankle and foot
Term
Lateral
Definition
Outside aspect of leg, ankle, and foot
Term
Anterior
Definition
Front of leg and ankle
Term
Posterior
Definition
Back of leg and ankle
Term
Proximal
Definition
away from point of reference towards trunk
Term
Distal
Definition
Away from point of reference towards toes
Term
Superior
Definition
Closest to head
Term
Inferior
Definition
Closest to toes
Term
Dorsal
Definition
Top of foot
Term
Plantar
Definition
Bottom of foot
Term
Palpation
Definition
pushing with finger or thumb onto area to identify specific landmark
Term
Identify: Iliac Crest, Anterior Superior Iliac Spine, Greater Trochanter (femur), Patella, Fibular head, Tibial tuberosity, Common Peroneal Nerve
Definition
See lecture
Term
Identify: Dorsalis Pedis Artery, Medial Malleolus, Navicular tuberosity, 1st metatarsal phalangeal joint, Calcaneous, Tibial Nerve, Posterior Tibial Artery
Definition
On anterior and medial foot and ankle..
See slide
Term
Where on the foot can you feel a pulse?
Definition
Dorsalis Pedis artery (anterior)
Posterior tibial artery.
Term
What inserts at the navicular tuberosity?
Definition
The tibialis posterior muscle tendon.
Term
How would you deliver anesthesia to
entire plantar aspect of foot.
Definition
Via posterior tibial artery
Term
What nerve do you use for local or regional anesthetic injection to the heel?
Definition
Tibial Nerve
Term
Identify: Lateral Malleolus, Dorsal Vein, Calcaneous, 5th Metatarsal Base tuberosity
Definition
On Anterior and lateral foot and ankle
See slide
Term
Identify: Medial malleolus, lateral malleolus, navicular tuberosity, calcaneus, 5th metatarsal base tuberosity
Definition
On posterior foot ankle
See slide
Term
Lateral and medial malleolus are on the same plane. True/False
Definition
False
Term
Identify: 5th Metatarsal head, 1st metatarsal head with sesamoids, plantar fascia, calcaneous
Definition
On plantar foot. See slide.
Term
Plantar fibromatosis
Definition
Entire plantar fascia band becomes hard nodules.
Term
Location of pain in Plantar fascitis
Definition
More proximal, medial, lateral pain
Term
Identify: Quadriceps muscles, patellar ligament, Tibialis anterior, gastrocnemius
Definition
Anterior leg
See slide
Term
Identify: Quadriceps, Hamstrings, Gastrocnemius, Soleus
Definition
Medial line. See slide
Term
Achilles tendon
Definition
Soleus and gastrocnemius combined
Term
Where does the hamstring insert?
Definition
Posterior aspect of tailbone.
Term
Identify: Hamstring muscles, Popliteal fossa, gastrocnemius, Soleus, Achilles tendon
Definition
See slide. Posterior Leg
Term
Contents of popliteal fossa
Definition
NVA- Nerve Vein Artery
From medial to lateral
Term
Locate: Hamstring, Quadricepts, Iliotibial band, Peroneal muscles, Gastrocnemius muscle, soleus muscle
Definition
All on lateral Leg.
See slide
Term
If you lay on left side and raise right leg against resistance, what will you feel?
Definition
Long tight band called the iliotibial band.
Term
Two peroneal muscles
Definition
Soleus medial (brevis and longus)
Term
Identify: Extensor digitorum brevis, extensor hallucis longus tendon, Extensor digitorum longus tendon, tibialis anterior tendon
Definition
On Dorsal foot
See slide
Term
What extensor sepearate out into four separate slivers of tendon?
Definition
Extensor digitorum longus.
Term
How can you see the teonds of the dorsal foot?
Definition
Foot to nose against resistance.
Term
Function of Extensor hallucis longus?
Definition
Permits big toe to go up in air.
Term
Length of achilles tendon?
Definition
70 cm
Term
Identify: Tibialis anterior tendon, extensor hallucis longus tendon, achilles tendon
Definition
Medial foot and ankle. See slide.
Term
How to tell if Achilles tendon is ruptured?
Definition
Leg overhanging, will see a dell or dip.
Term
Identify: Peroneal tendons, Extensor digitorum brevis, extensor digitorum longus tendons
Definition
Lateral foot and ankle
Term
Sit in a chair and move foot away from the midline against resistance, what will you see?
Definition
Two prominant peritoneal tendons.
Term
Plantarflexion
Definition
Toes down
Foot is "plantar-flexed"
Term
Dorsiflexion
Definition
Toes up
Foot is "dorsiflexed"
Term
Adduction of foot
Definition
Towards midline of body
Term
Abduction of foot
Definition
Away from midline of body
Term
Inversion
Definition
Varus position
Plantar foot towards midline
Term
Eversion
Definition
Valgus position
Plantar foot away from midline
Term
Supination
Definition
Simulataneous movement of the foot in the direction of adduction, inversion, and plantarflexion
Term
Pronation
Definition
Simultaneous movement of the foot or part of the foot in the direction of abduction, eversion, and dorsiflexion
Term
Forefoot Contains
Definition
Digits and phalanges
Metatarsals
Term
How many phalanges per toe?
Definition
Big toe has two
Rest have three
Term
Midfoot contains
Definition
Lesser tarsals
Cuneiforms (medial, intermedial, lateral) navicular (behind cuneiforms) and cuboid (laterally)
Term
How do you divide the foot into lateral and medial columns?
Definition
Making a line between cubeiform and cuboid
Term
Rearfoot contains
Definition
Tallus and Calcaneous
Term
Talipes Equinovarus
Definition
Congenital Deformity
Clubfoot, rearfoot inverted towards the midline. Caused by talus bone.
Person cannot dorsiflex past midline, plantarflexed past midline.
Varus deformity, heel bone inverted towards midline.
Triplanal deformity, metatarsals in abducted position.
Term
Pes cavus
Definition
High arch
Biggest indicator is x-ray, position between calcaneous and weight supporting surface.
Term
Pes Planus
Definition
No arches. Flat foot deformity.
Can be a frontal plane, sagittal plane, or transverse plane problem. Need radiographic workup.
Angle of calcaneus with weight supporting surface is very low (3 degrees)
Term
Syndactylyl
Definition
Webbed Feet
May have underlying bones associated with it (bones will determine severity)
Many people have webbing between third and fourth toe, nbd.
Term
Polydatyly
Definition
Extra toe.
Medially (two big toes), Centrally (more than three), or extra fifth toe.
May need surgical intervention to fit into shoe.
Term
Cleft foot (lobster foot)
Definition
Rare Congenital Anomaly.
Absence of part of the forefoot.
Nothing done if no problems ambulating, just need shoe gear.
Term
Metatarsus Adductus
Definition
Metatarsals gravitate towards midline and adducted position.
Focus on metatarsals in relationship to lesser tarsals of the midfoot.
Term
Hallux Abductovalgus
Bunion
Definition
Common acquired deformity
Large IM angle.
Develop due to pronating foot type and increase in IM angle
Term
Bunionette
Definition
Reverse of hallux abductus valgus.
Higher IM angle in 4th and 5th metatarsals resulting in bony prominence outside the fifth.
Known as tailor's bunion.
Term
Hallux limitus
Definition
Acquired deformity
Big toe of hallux has limited range of motion
Can progress to hallux rigidus where there is no range of motion present
Caused by position of metatarsals (jamming on movement) or arthritic changes (no cartilage to facilitate smooth movements)
Term
Hallux Varus
Definition
Acquired deformity, looks congenital and may be a developmental problem.
Occurs with an overcorrected bunion or soft tissue overcorrection.
Term
Difference between hallus abductor vallus vs hallus abductor varus
Definition
hallus varus: Frontal plane abnormality
Hallus vallus: big toe abducted and some frontal plane motion
Term
Hammer Toe
Claw Toe
Mallet Toe
Describe proximal middle distal phalynx
Definition
Acquired Deformities
Hammer toe: basket terminology that includes other two.
Hammertoe: Dorsiflex, plantarflex, dorsiflex or neutral
Mallet toe: Neutral, neutral, plantar flex
Claw toe: Dorsiflex, plantarflex, plantarflex
Term
Haglund's Deformity
Definition
Acquired Deformity
Pump-bump
Bondy prominence on posterior aspect of the calcaneus.
Problems wearing shoes, but no pain otherwise.
Term
Heloma Dura
Definition
Hyperkeratosis (callous formation due to pressure or friction)
Prominence underneath callus due to contraction. Shoe gear irritation from pressure or friction. Trim down callous and modify shoes.
Term
Heloma Molle
Definition
Hyperkeratosis (callous formation due to pressure or friction)
Calous within interspace of toe. Interdigital callus or corn. Tend to be soft due to moisture btwn toes (4th webspace).
Caused by pressure (btwn head of 5th toe prox phalynx and base of 4th toe prox phalynx)or friction.
Trimmin helps, but better to put webspace between 4th and 5th to stabilize 4th toe after removin piece of bone. 5th bone can sit on top of foot if not stabled with syndactly
Term
Tinea pedis
Definition
Athlete's foot
Four types: Pappilous squamous type, moccassin, interdigital, vesicular.
Type of fungal infection
Term
What occurs when a patient has both interdigital tenia and a bacterial infection?
Definition
Two infections together cause skin sloughing and raw beefy tissue due to multiple infections occurring at the same time.
Term
Causes of ulceration
Definition
Diabetes, neuropathy, charcot arthropathy.
Term
Melanoma
Definition
Malignant type of skin tumor. Tumors in lower extremity are more rare, but can still be encountered.
Term
Onychomycosis
Definition
Tenia infection (athlete's foot) of the nail.
Thickened, discoloration, brittle and irregular. Fungal nail infections.
Term
Onychocryptosis
Definition
Ingrown toenail.
Caused by many things, but ends up happening that nail penetrates soft tissue around the border causing localized inflammation, but not necessarily infection.
In infected, perinicheum.
Term
Strain
Definition
Inflammation to muscle or tendon
Term
Strain
Definition
Inflammation to muscle or tendon
Term
Sprain
Definition
Ligament Injury.
Injury or inflammation to ligament structure.
Term
Difference between strain and sprain.
Definition
Sprain: Able to palpate ligaments involved.
Strain: Less muscle strength and may not be possible to palpate ligament.
MRI will show what it is.
Term
Arthritis
Bursitis
Neuritis
Dermatitis
Definition
Arthritis: Joint inflammation
Bursitis: Soft tissue sac inflammation
Neuritis: Nerve inflammation
Dermatitis: Skin inflammation
Term
Charcot arthropathy
Definition
Type of neurogenic arthritis typical with diabetes and neuropathy.
Can occur within only a couple of weeks.
Blood flow demineralizes bone and combined neuropathy will cause fractured fragmentation to occur at location.
Can occur at any joints of the lower extremity.
Term
Rheumatoid arthritis
Definition
Typically metatarsal-phalangeal joints.
Uniform joint space narrowing, bone washout, errosive changes at metatarsal.
Causes deformities and contractures of digit.
Term
Fat bed atrophy in rheumatoid arthritis
Definition
At forefoot, will thin out or migrate putting individuals at risk for soft tissue breakdown.
Metatarsal heads more tender due to lack o ccushioning.
Term
Bursitis
Definition
Many different bursas, by achilles tendons.
Inflammation of fluid filled sack used as cushions.
Term
Causes of pain at achilles tendon
Definition
Can be bursitis, tendonitis, or small fracture of the bone. Differentiate
Term
Dermatitis
Definition
Inflammatory process infecting the skin
Most common is contact dermatitis due to allergens coming in contact with the skin or from a type of adhesive.
Term
Cellulitis
Definition
Soft tissue infection. Significantly red and looks inflamed.
Will be bacteria associated with inflammatory process making infection.
Term
Osteomyelitis
Definition
Bone inflammation
Bone washout and changes underneath where bone is much narrower not continuous.
Patient may have ulceration associated, open wound with contaminents and infection and exposed bone will lead to osteomyelitis or bone infection.
Term
Dry gangrene
Definition
NOT a medical emergency.
Due to poor circulation or lack of profusion to the soft tissues, digits are not profusin so no blood, nutrients, or oxygen.
Take surgery or work-up appropriately (send to vascular to find where occlussion is at or if it is fixable, bypass, or stent to improve circulation) possibly amputate.
Term
Wet gangrene
Definition
MEDICAL EMERGENCY
Large big black bulla on plantar aspect of foot. Dark changes in tissue in radiograph.
Anaerobic bacteria produce gas, will spread up the leg if not treated immediately.
Operating room that day and remove all tissue not profusing.
Term
Yearly diabetic amputations in US
Definition
54,000
Term
25% of diabetic admissions
Definition
for foot complications
Term
How much annually, does treatment of foot complications cost the US healthcare system?
Definition
6 billion dollars.
Term
Prevalence of diabetes in the US
Definition
6% of population
10.4% older than 65
1 million new cases diagnosed yearly
90% type II
50% of type II diabetics are undiagnosed.
Term
Major diabetic complications
Definition
Nephropathy: leading cause of kidney failure
Retinopathy: Leading cause of blindness
Neuropathy: Leading cause of amputation
Heart and Peripheral Vascular disease: Occurs at younger age
Immunosuppression
Term
Diabetic complications effect on healing
Definition
Immunocompromised will cause infected open sore to have less redness or fever.
Nutritionally comprised will have problems with healing.
Term
Prevalence of extremity complications in diabetics
Definition
15% lifetime risk of ulceration in diabetes
3% overall yearly risk of ulceration
7% yearly risk of ulceration if neuropathic
15-40 times greater risk of amputation
80% of foot amputations due to diabetic complications.
Term
Why do we trim toe nails?
Definition
to reduce amputation rates
Term
What is the goal of the U.S. Dept of health and human services
Definition
Reduce the extremity amputation rate in the diabetic population by 40%
Term
Benefits of reducing amputations
Definition
Reduced patient morbidity and mortality
Limit healthcare expenditures
Term
Risk factors vs. Causal Factors
Definition
Risk factors increase the possibility of diabetic foot amputations while causal factors cause the need for amputation.
Term
Risk factors for amputation
Definition
Age
Diabetes duration
Gender
Smoking
Hyperglycemia
Microalbuminuria
Vascular risk factors
Term
Causal factors for amputation
Definition
Neuropathy
PAOD (loss of blood flow)
Deformity
Trauma (may be microtrauma of walking on hurt foot every day)
Term
What are the most important risk factors for LE complications in diabetes?
Definition
Diabetes > 10 years
Male
Poor diabetes control
Term
How is risk calculated or LE complications in diabetes?
Definition
Cumulatively
1= 1.7x
2= 12.1
3= 36.4
Term
Causal factors for ulceration
Definition
Sensory neuropathy
Structural deformity
Trauma
Term
Causal Factors for amputation
Definition
PAOD: most common reason for salvage failure
Infection: Most common reason for admission
Foot ulceration: Precedes 85% of amputations
Term
Risk factors for diabetes complications
Definition
Duration
Sugar control
Age
Term
Complications
Definition
Neuropathy
PAOD
Blindness
Kidney Disease
Heart Disease
Immuno-suppression
Term
Ulceration causal factors
Definition
Neuropathy
Deformity
Trauma
Term
Amputation causal factors
Definition
Ulceration
PAOD
Infection
Term
Neuropathy Screening
Definition
Quantitative: Vibratory perception threshold, Semmes-Weinstein monofilament
Qualitative: Sharp-dull, vibration perception, light touch
Term
Semmes-Weinstein Monofilament
Definition
ADA recomends screeing all diabetic patients neurological status using 5.70 monofilament annually and quarterly.
Term
Method of Measurement
Definition
S-W 5.07 Monofilament
10 standard sites on the foot.
Patient with eyes closed, reports location each time they feel the stimulus and the location.
Should be able to feel 7 out of 10 spots or risk developing ulcerations.
Term
Two forms of diabetic ulcer classification
Definition
Wagner
university of Texas
Term
Which diabetic ulcer classification is better and why?
Definition
Univrsity of Texas since it has information about blood flow.
Term
Wagner Ulcer Classification: Grades 0-5
Definition
Grade 0: Pre-ulcerative lesion
Grade 1: Superficial, no subcutaneous involvement
Grade 2: Penetration through subcutaneous tissue (may expose bone, tendon, ligament, joint capsule) no abscess or osteomyelitis
Grade 3: Abscess or osteomyelitis
Grade 4: Gangrene of forefoot
Grade 5: Extensive gangrenous involvement of the foot.
Term
Sprain vs. Strain
Definition
Sprain: Ligament
Strain: Tendon
Term
Wagner Grade 0 Ucer
Definition
Callus has black underneath is dry blood.
Term
Onychogryphosis
Definition
Curled toenails
Term
Wagner Grade 1 Ulcer
Definition
Superficial without subcutaneous involvement
Term
Wagner Grade 2 Ulcer
Definition
Penetration through subcutaneous tissue (may expose bone, tendon, ligament, joint capsule)
Term
Wagner Grade 3 Ulcer
Definition
Osteitis, abscess, or osteomyelitis
cellulitis with abscess
Term
Wagner Grade 4 Ulcer
Definition
Forefoot gangrene
Term
Wagner Grade 5 Ulcer
Definition
Gangrene of entire foot
Term
University of Texas Wound Classification system
Definition
Grade 0: pre- or post-ulcerative lesion completely epithiliazed
Grade 1: Superficial wound, not involving tendon, capsule, or bone.
Grade II: Wound penetrating to tendon or capsule
Grade III: Wound Penetrating to Bone or joint
Stage A: Wound
Stage B: Infected
Stage C: Ischemic
Stage D: Infected and ischemic.
Term
PAOD Screening: Risk factors
Definition
Age
Genetics
Smoking
HTN
Heart Disease and stroke
Term
PAOD: Clinical Exam
Definition
Pedal pulses
Skin findings (no hair, shiny skin)
Hand held doppler (don't trust your hands)
Segmental pressures and waveforms
Term
Segmental Doppler Testing
Definition
Uses doppler and a blood pressure cuff at multiple levels from the thigh to detect arterial blockage.
Toe pressures are most important predictor of healing
Toe waveforms are not helpful
ABI does not predict healing in the foot
Term
Should you soak ulcerations due to ischemia?
Definition
NO
Term
Deformities that can be causal factors for ulcerations
Definition
Stiffness
Equinus
Claw toes
Metatarsal Prominence
Bunions
Contractures
Term
Predicting Impending Ulcer
Definition
Color changes
Dermal thermometry
Term
Thermometry
Definition
First step in ulcer formation is repetitive trauma.
Trauma leads to skin inflammation
Increased skin temperature accompanies inflammation
>4 degree temperature indicates impending ulcer
Not a risk factor, but an indicator.
Term
How to classify foot risk.
Definition
Identify risk factors
Identify causal factors
Identify history of ulcer/amputation
Assign patients to appropriate level of care
Term
IWGDF Risk Stratification
Definition
FRG-0 No neuropathy, no deformity 0 risk check once a year
FRG-1 Neuropathy, no deformity, 1.7 risk, Check every six months
FRG-2 Neuropathy, deformity, 12.1 risk, check every three months
FRG-3 previous ulcer or amputation, 36.4 risk, frequently
Term
Amputation Prevention Team
Definition
Screenings: Make diagnosis and identify those at risk
Education: Sugar control, life style modification and daily foot exams
Pressure Reduction: Shoes/Insoles/Bracing and correction of deformities
Debridement: Nails, Callus
Term
Podiatrists role in treating diabetes.
Definition
Screening for complications
Treatment of ulcerations and infections
Preventative care/high risk care: Education, shoe gear, nail and callus debridement, treatment of deformities.
Term
Ulcer Prevention
Definition
Extra-depth diabetic shoes with plastizote inserts
Camwalker
Post-op shoe
IPOS shoe
Heel off-loading shoe
Term
Wound vacuum
Definition
Through negative pressure, promotes angiogenesis. Pulls out gross stuff in wound.
Term
Secondary intention wound healing
Definition
Wound heals by granulation (from the inside out). Allows wound to heal on its own.
Term
Primary Intention
Definition
Wound is excised and primarily closed
Term
Charcot Arthropathy
Definition
Progressive condition characterized by joint dislocation, pathological fractures, and sever destruction of pedal architecture.
Term
Charcot: Pathogenesis.
Two theories
Definition
Neurotraumatic theory: Loss of pain sensation and proprioception combined with mechanical trauma to the foot
Neurovascular Theory: Joint destruction due to an autonomically stimulated vascular reflex causing periarticular osteopenia. Eccentric loading of the foot leads to microfractures, ligamentous laxity and bony destruction.
Term
Waldvogel Osteomyelitis Classification
Definition
Type I: Hematogenous (spreads through blood stream)
Type II: Contiguous focus (direct innoculation)
Type III: OM associated with vascular disease (ischemia/lack of blood flow)
Type IV: Chronic
Term
Metatarsal Stress Fracture
Definition
Overuse, insufficiency fracture
New bone formation cannot keep up with demands on bone.
Insufficient in osteoporosis, elderly
Term
Lesser Metatarsal Fracture (1-4)
Definition
Traumatic Cause
Term
5th Metatarsal Avulsion Fracture
Definition
Can occur from impact injury
Term
Jones Fracture
Definition
Fracture of 5th Metatarsal bone
1/5-3 cm from 5th metatarsal-cuboid joint.
High rate of non-union due to poor vascular supply in region.
Term
Lisfranc's Fracture dislocation
Definition
Fracture at the metatarsal-cuneiform joints and/or metatarsal cuboid joints.
Term
Navicular Fracture
Definition
4 types
Avulsion (pull-off)
Tuberosity (medial side)
Body
Stress fracture
Term
Cuboid Fracture
Definition
Two types
Avulsion (from calcaneo-cuboid joint ligament)
Compression
Term
Talar Dome lesion
Definition
Osteochondral fracture (cartilage and bone attached to it in ankle joint)
Occurs in ankle fractures.
Term
Talar fractures
Definition
Head, neck, body fractures
Term
Sagittal Plane
Definition
Vertical plane passing through the body from front to back.
Divides into right and left equal symmetrical halves.
Term
Frontal plane
Definition
Vertical plane passing through body dividing into front and back assymetrical halves.
Term
Transverse plane
Definition
Horizontal plane passing through the body dividing into upper and lower halves
Term
Axis motion
Definition
Always perpindicular to the plane in which the motion takes place.
Axis in proximal part while motion takes place in distal part.
Line around which motion takes place
Term
Frontal-Sagittal Axis
Definition
Vertical Axis perpindicular to ground.
Axis of transverse plane motion.
Term
Frontal-Sagittal Axis: Motion
Definition
Abduction and adduction motions of the foot.
Internal and external motions of the leg.
Term
Frontal-Transverse Axis
Definition
Horizontal axis which passes from side to side in frontal and transverse plane.
Axis of sagittal plane motion.
Term
Frontal-Transverse Axis: Motion
Definition
Dorsiflexion and plantarflexion of the foot
Flexion and extension of the leg.
Term
Sagittal-Transverse Axis
Definition
Horizontal axis in sagittal and transverse planes and longitudinal axis of the foot.
Axis of frontal plane motion.
Term
Sagittal-Transverse Axs: Motion
Definition
Inversion and eversion of the foot.
Abduction and adduction of the leg.
Term
Abduction: Axis terminology
Definition
Motion in the transverse plane around a vertical (frontal-sagittal) axis in which the distal aspect of the foot moves away from the midline of the body.
Term
Adduction: Axis terminology
Definition
Motion in the transverse plane around a vertical (frontal-sagittal) axis in which the distal aspect of the foot moves toward the midline of the body.
Term
Dorsiflexion: Axis terminology
Definition
Motion in the sagittal plane around a transverse-frontal axis in which the distal aspect of the foot moves dorsally or towards the tibia.
Term
Plantarflexin: Axis terminology
Definition
Motion in the sagittal plane around a transverse-frontal axis in which the distal aspect of the foot moves plantarly, or away from the tibia
Term
Inversion: Axis terminology
Definition
Motion in the frontal plane around a transverse-sagittal axis in which the plantar surface of the foot moves toward the midline of the body.
Term
Eversion: Axis Terminology
Definition
A motion in which the frontal plane around a transverse-sagittal axis in which the plantar surface of the foot moves away from the midline of the body
Term
Motions of the leg
Definition
Transverse plane motion is called internal and external rotation
Frontal plane motion is called abduction and adduction
Sagittal plane motion is called flexion and extension.
Term
Open kinetic chain vs closed kinetic chain
Definition
Open: body is not bearing weight (swing face)
Closed: Weight bearing surface (hitting ground while walking)
Term
Adductus
Definition
Fixation of a part in position it would assume in adduction.
Transverse fixation with distal end displaced toward midline.
Term
Abductus
Definition
Fixation of a part in position it would assume in abduction.
Distal end displaced away from the midline.
Term
Varus
Definition
Fixation of part in position it would assume if inverted.
Frontal plane fixation in which plantar surface it turned toward midline.
Term
Valgus
Definition
Fixation of part in position it would assume if everted.
Frontal plane fixation in which plantar surface is turned away from midline.
Term
Equinus
Definition
Fixation of foot or part in plantarflexed position.
Distal end farther away from tibia.
Term
Calcaneus
Definition
Fixation of foot or part in dorsiflexed position.
Distal end is closer to tibia.
Term
Talipes
Definition
Hereditary defects that change the position of the entire foot.
Term
Ankle joint axis
Definition
Deviated 15 or 20 degrees from frontal plane.
80 or 75 degrees from sagittal plane.
10 degrees from transverse
Most resembles sagittal plane axis of motion
Should be zero degrees of frontal plane motion.
Term
Tibial tortion
Definition
Medial and lateral malleolus shift 15 degrees from frontal plane due to rotation of the tibia.
Ankle joint not designed for frontal plane motion.
Term
Subtalar joint axis
Definition
42 degrees from transverse plane
16 degrees from sagittal lane
Term
Midtarsal joint axis
Definition
Longitudinal axis: 15 degrees from transverse plane and 9 degrees from sagittal plane
Oblique axis: 52 degrees from transverse plane and 57 degrees from sagittal plane
Term
First Ray Axis
Definition
45 degrees from from frontal and sagittal planes.
dorsiflexes and inverts or plantarflexes and everts.
little to no transverse plane motion.
Term
Gait cycle
Definition
Broken into swing and stance phase.
Term
What are conservative wound treatment measures?
Definition
Debridement and medication
Term
Considerations for ideal management of foot ulcers?
Definition
Glycemic management
Nutrition management
Wound care
Foot mechanics
Surgical considerations
Term
Dermagraft
Definition
Live tissue covering
Term
Radiographic findings of Charcot arthropody
Definition
Fracture, fragmentation, bone washout, bone loss
Term
Why would a low white blood cell count be present with an infection?
Definition
Diabetes
Immunocompromised
Term
What should the sed rate be?
Definition
8-12 (sedimentation rate)
Term
Charcot Arthropody vs Osteomyelitis
Definition
White blood cell count, sed rate
Bone biopsy
Term
How does charcot arthropody occur?
Definition
Due to autonomic neuropathy. Small vessels will open leading to specific bloodflow, causes bones and minerals to wash out and cause breakdown of soft tissue.
Term
Atrophic charcot
Definition
Occurs less often
Termed diabetic osteolysis
Usually restricted to forefoot
Osteoporosis
Destruction and disappearance of bone substance
Hourglass resorption of phalangeal diaphysis
can be confused with osteomyelitis
Term
Hypertrophic charcot
Definition
More common osteoarthropathy with Charcot
Resembling an acute fracture or severe osteoarthritis
usually affects midfoot region
marked osseus overgrowth and osteophytes
eburnation
sclerosis of affected joints
Term
What do Tc-99m scans look for?
Definition
Bone turnover
Term
What do gallium scans look for?
Definition
Infectious processes
Term
When is Ceretec can "WBC Tc-99m" positive?
Definition
ONLY acute osteomyelitis
Term
When are indium scans positive?
Definition
Acute osteomyelitis and acute cellulitis
Term
What is the goal of charcot treatment?
Definition
Prevention of further trauma
Term
Acute stage charcot treatment
Definition
Absolute non-weight bearing
Cast immobilization
Elevation of affected extremity
Proper management of infected neurotrophic ulcers
Must take precautions for the contralateral limb
drugs that inhibit bone resorption
weekly x-rays should be taken
Term
Late stage charcot treatment
Definition
Lis franc's arthrodesis
Triple arthrodesis
Pan met head resection
exostectomy
Tendo-achilles lengthening
Term
Bilateral ulceration flap
Definition
Move seismoids and make flaps from portions. Keeps all soft tissue connected.
Term
What do Serutex scans show?
Definition
Bone loss
Term
Chopart's amputation
Definition
Amputation of the tissues distal to the talonavicular and calcaneocuboid joints.
Term
Why does chopart amputation have a high failure rate?
Definition
Development of equinovarus deformity resulting in difficulty with shoe gear and bracing, skin breakdown, infection, and the development of a need for a more proximal amputation.
Term
What has changed to make Chopart's amputation more successful?
Definition
Transfer of anterior tibial tendon to the anterolateral portion of the talus.
Achilles tendon tenotomy or lengthening, and intramedullary nailing of th eankle and subtalar joints with or without arthrodesis.
Term
When is Chopart's amputation a procedure of choice?
Definition
When extensive forefoot gangrene or infection is associated with an intact hindfoot
Term
Gold standard of treatment for osteomyelitis.
Definition
Removing infected bone.
Term
What indicates a wound is most likely affected?
Definition
Exposed bone.
Term
How is necrotic tissue treated?
Definition
Tissue resected and wound irrigated with sterile saline using pulsatile lavae.
Term
What is a huge factor in determining where to amputate?
Definition
Whether there are prosthetic devices available.
Term
Why are antibiotic beads used?
Definition
Gentamicin impregnated beads are used to treat area and prevent kidneys from being exposed to high doses of antibiotics.
Term
How do you know when a Jackson-Pratt drain is working?
Definition
When a dimple forms.
Term
What factors must a surgeon consider when making a decision on an amputation?
Definition
Adequacy of arterial perfusion
Extent and treatment of infection
Whether or not there will remain adequate soft tissue for coverage of wound stump.
Functional mechanics of amputation
Suitability of Specific orthoticic and/or prosthetic devices
Metabolic and cardiac benefits of a specific procedure
Individual psychological challenge
Term
When does a frontal plane varus deformity occur in a Chopart amputation?
Definition
When the rearfoot or ankle displays existing structural varus
Term
What are the benefit's of Chopart's procedure in absence of varus deformity?
Definition
Only the sagittal plane component needs to be addressed.
Term
What occurs as the amputation level becomes more proximal?
Definition
The metabolic reserve has less capacity available to increase walking speed, walk uphill, or perform other tasks.
The reater the rate of oxygen consumption at normal walking speed
Term
Brachymetatarsia
Definition
Premature fusion of metatarsal physis
Most common in 4th metatarsal
Term
Cause of brachymetatarsia
Definition
Idiopathic
Acquired (trauma, injury, surgery)
Congenital
Iatrogenic
Systemic syndromes
Term
What gender is more affected by brachymetatarsia?
Definition
Females
Term
Brachymetapody
Definition
Brachymetatarsia is more than one metatarsal involved
Term
Clinical presentation of brachymetatarsia
Definition
Clinically sort metatarsal evident between ages of 4 and 15
Digit may dorsally displace over the adjacent metatarsal resulting in pain and tyloma formation.
Distressed about appearance.
Pain due to callus formation or incorrect weight bearing.
Term
Treatment options for brachymetatarsia
Definition
Conservative: Accommodotative shoes, orthotics/padding, palliative care
Surgical: Amputation, syndactlylization, lengthening of shortened metatarsal, shortening of other metatarsals.
Term
Surgical goals of brachymetatarsia surgery
Definition
Alleviate pain
Establish a cosmetically acceptable foot
Restore a functional metatarsal parabola.
Term
Surgical options for brachy metatarsia
Definition
One-stage lengthening with autogenous or allogenic bone graft
Z-lengthening metatarsal osteotomy with screw fixation.
Callous distraction osteogenesis with external fixation (most common)
Term
One-Stage Lengthening: Advantages
Definition
Shorter period of bony union (1.5 months/cm)
Less scar potential
Term
One-stage Lengthening: Disadvantages
Definition
Donor site morbidity with autogenous graft
Possible neurovascular impairment (no matter how uninvasive)
Smaller length gain possible due to soft tissue tension
Longer NWB status (4 to 6 weeks)
Term
Callus Distraction: Advantages
Definition
Early ambulation
No need for bone grafting
Easier tendon stretching
lesser neurovascular complications
Term
Callus Distraction: Disadvantages
Definition
Scar potential
Longer time for bony consolidation
longer healing time
pin-tract infections (possible osteomyelitis)
Term
Parameters for distraction
Definition
osteotomy versus corticotomy
level of osteotomies
latency period
rate and frequency o distraction
ossification period
postop management
complications
Term
Corticotomy vs Osteotomy
Definition
Corticotomy: Circumferentially drill holes around cortex, preserve the endosteum. Not much benefit.
Osteotomy: Technically easier requiring less dissection
Term
Diaphyseal vs Metaphyseal Osteotomy
Definition
Diaphyseal: Pin placement is relatively easier and a periosteal sleeve can be created and resutured following osteotomy. Less metabolically active bone.
Metaphyseal Osteotomy: Greater diameter, increased osteogenic potential and greater amount of soft tissue coverage. Difficult manipulation and pin placement.
Term
What is the ideal level of osteotomy?
Definition
Metaphyseal/diaphyseal junction
Term
Latency period before callous distraction begins.
Definition
5-7 days no matter what type of bone
Term
Rate and Frequency of distraction
Definition
0.5mm daily total for small bone
0.25 mm every 6 hours (1mm/day) for larger bone (tibia)
Term
Consolidation time
Definition
14-18 weeks
Term
Post-op management and ambulation for callous distraction
Definition
Limited weight bearing until full consolidation or full weight bearing once skin coaptation has been obtained.
Risk i relative to the strength of the external fixation construct, facial compliance, and facial weiht.
Term
Complications of Callous distraction
Definition
Loss of joint motion-MPJ stiffness
Malalignment
Subluxation/dislocation
Delayed union or nonunion
Chronic edema
Neurovascular compromise
Pin site irritation/infection
Term
What angle are pins placed in for callous distraction?
Definition
45 degree angle to plantar surface of the foot.
Term
At what point do you see new bone formation in callous distraction
Definition
about 4 weeks
Term
At what point did complete regeneration and consolidation occur?
Definition
4 months postop
Term
How many ER visits per year are caused by lawnmower injuries?
Definition
74,000
Term
Are men or women more likely to be hospitalized for lawnmower injuries?
Definition
Men
Term
Do riding lawn mower injuries or push mower injuries cause more damage?
Definition
Riding lawnmowers
Term
What safety protocols reduced lawnmower injuries?
Definition
Not allowing mower blades to engage in reverse on riding lawn mowers.
Not allowing mower blades to engage on riding mowers when driver not in seat.
Automatic stop on push mowers.
Term
How are children injured in lawn mower injuries?
Definition
Falling off riding lawn mowers
Not being seen and getting run over
Term
Zones of the foot.
Definition
Zone I: Toes
Zone II: Dorsal
Zone III: Plantar
Zone IV: Calcaneus
Zone V: Lower Leg
Term
What zone of the foot has the most lawnmower injuries?
Definition
Zone I: Toes
Term
What did all Zone I injury patients receive?
Definition
Debridement and at least 1 liter saline
Term
Recommendations for Lawnmower injuries by zone
Definition
Zone I: Primary Closure
Zone II: Primary closure, flaps and grafts may be necessary
Zone III: Usually not involved but may need flap coverage
Zone IV: Tendon and bone juries need surgical repair, greatest complication due to soft tissue breakdown, split at 90 degrees to prevent contracture
Zone V: Splint at 90 degrees to prevent contracture, surgical reduction may be necessary
Term
Which zone is most difficult to heal in lawnmower injuries?
Definition
Zone IV
Term
Gustilo and Anderson fracture classification
Definition
Type I: Puncture wounds <1cm with minimal contamination and muscle damage
Type II: Laceration >1cm with moderate soft tissue injury. Bone coverage adequate, comminution minimal.
Type IIIa: Heavily contaminated wounds with severe comminution. Extensive soft tissue damage with adequate soft tissue coverage.
Type IIIb: Periosteal stripping and exposed bone
Type IIIc: Extensive arterial injury
Term
Antibiotics in lawnmower injuries
Definition
Should be given as soon as possible
Combo therapy (1st gen cephalosporin and aminoglycoside)
Farm injuries or anaerobic infcetions (Ampicillin, penicillin, or clindamycin should be included to prevent severe infection)
Term
Use of cipro as antibiotic in lawnmower injuries
Definition
Effective as a single agent in type I and II to prevent against staph and strep.
Doesn't work alone in type III
Term
Wound management in lawnmower injuries
Definition
Irrigation with at least 1 liter of saline
Debridement of nonviable contaminated soft tissue
Removal of free cortical bone fragments with no soft tissue attachments.
If wounds aren't irrigated and debrided within 6-8 hours then wait or 3-7 days to wait for bacteria to die.
Term
What do you do when you see purple or dark tissue?
Definition
Recognize that it is not healthy. Take it out.
Term
Pernicious Anemia
Definition
Due to lack of intrinsic factor. Atrophied gastric mucosa will not be able to liberate B12 rom food due to a decrease of pepsin and acid, will cause decrease in DNA synthesis. Most common type of anemia.
Term
What type of B12 deficiency is common in the elderly?
Definition
Atrophy of the gastric musoca called food-cobalamin malabsrption.
Clinical signs and symptoms are less severe due to its slow development.
Lack of B12 will lead to a defect in DNA synthesis, especially in cells with rapid turnover, like blood cells, which leads to anemia.
Term
Why does B12 deficiency cause nerve damage?
Definition
It is an important cofactor in converting homocysteine to methionine. Methionine is needed for production of choline-containing phospholipids which are formed in the myelin sheath of nerves.
Without phospholipids, nerve transmission is impaired.
Term
Spinal Cord and B12 deficiency
Definition
Lack of phospholipids in myelin sheaths causes "subacute combined degeneration of the spinal column", affects the posterior and lateral columns of the spinal cord.
Posterior column transmits vibration and position sense.
Lateral column coordinates voluntary movement-disorders and will cause stroke-like symptoms.
Term
Treatment of B12 deficiency
Definition
Monthly IM injections 1000 micrograms of B12 or daily oral crystalline B12 at a dose of 1000-2000 micrograms.
Nromal daily requirement is 3 micrograms/day. Oral is effective because 1-5% of cobalamin absorbed passively along the intestine and does not need an intrinsic factor.
Term
Goals of treating open fractures
Definition
Converting a contaminated wound into a clean wound
Restore function
Obtain cosmetic result if possible
Term
Golden period for an open fractures.
Definition
Less than six hours for the wound to be contaminated. Get to the OR immediately
Term
Open fracture
Definition
Bone comes down throuh the skin
Term
Surgical emergencies
Definition
Gas gangrene
Necrotizing fasciitis
Foot burns
Compartment syndrome (when fractures or injuries increase pressure due to inflammation or bleeding and cut off circulation.
Any fracture with a neurovascular compromise.
Term
How are antibiotics currently treated
Definition
For two or three days and then stop immediately when wound is clean
Term
Internal fixation
Definition
Atraumatic technique: Get in, get out
Anatomic reduction: trying to put bone's back together anatomically
Rigid internal compression: Two different types of bone healing primary healing (rigidly fix with screws and plates to prevent callous formation) and secondary bone healing
Term
What does callous formation with bones and plates indicate?
Definition
Surgeon did not know what he was doing or the patient was noncompliant and walked all over the place
Term
Gunshot wounds
Definition
Debride and irrigate wound
Remove bullet fragments that are easily visible, near neurovascular structures or in joints.
Stabilize any fractures.
Will need to be cleaned out.
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