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articulations
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73
Anatomy
Undergraduate 1
03/05/2012

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Term
Synarthrotic
Definition
Immobile
Term
Amphiaarthrotic
Definition
some movement (flexing or bending)
Term
Diarthrotic
Definition
fully mobile
Term
Fibrous- synarthrotic
Definition
[no joint cavity]
Term
Sutures
Definition
- three types: Serrate, Lap, and Plane
(joints of the skull)
Term
Syndesmoses
Definition
two bones held together by a ligament
Term
Gomphoses
Definition
attachment (by a ligament) of a tooth to its socket
Term
Gomphoses
Definition
attachment (by a ligament) of a tooth to its socket
Term
Cartilaginous
Definition
amphiarthrotic [held together by cartilage]
Term
Cartilaginous
Definition
amphiarthrotic [held together by cartilage]
Term
Cartilaginous
Definition
amphiarthrotic [held together by cartilage]
Term
Synchondroses
Definition
Hyaline cartilage: Epiphyseal plate binding
the diaphysis and epiphysis; Rib attachment to sternum
Term
Symphysis
Definition
Fibrocartilage: Pubic symphysis and intervertebral
disc
Term
Synovial-diarthrotic
Definition
two bones separated by a cavity filled with a
slippery lubricant (synovial fluid).
Term
articular cartilage
Definition
hyaline cartilage covers ends of bones
Term
joint cavity
Definition
space separating two bones; fluid filled
Term
articular capsule
Definition
encloses cavity & retains fluid
Term
synovial membrane
Definition
inner membrane of capsule releases fluid
Term
synovial fluid
Definition
rich in albumin and hyaluronic acid, nourishes cartilage and contains phagocytes.
Term
Fibrous membrane
Definition
continuous with periosteum, outer layer of
capsule
Term
Reinforcing ligaments
Definition
holds bones in place and shape of joint
Term
Tendon sheath
Definition
elongated cylinder shaped bursa wrapped around
a tendon (hands and feet)
Term
Meniscus
Definition
an inward growth of the joint capsule forming a pad,absorbs shock and pressure, reduces chances of
dislocation; guides the bones across each other.
Term
Bursa
Definition
a fibrous sac filled with synovial fluid, cushions muscles, helps tendons to slide more easily over joints
Term
Degrees of Freedom
Definition
related to the planes of movement
Term
Nonaxial
Definition
None
Term
Uniaxial
Definition
one plane (eg elbow)
Term
Biaxial
Definition
two planes (eg knee)
Term
Multiaxial
Definition
all planes (synovial joint of the hip)
Term
Plane/ Gliding
Definition
carpals and tarsal bones, amphiarthrotic
(slight movement)
Term
Hinge
Definition
elbow, knee, toe & finger joints; monoaxial
Term
Pivot
Definition
one bone has a projection that fits into the other, atlas & axis, proximal radioulnar joint
Term
Ellipsoid (condyloid)
Definition
joints at the base of the fingers, biaxial,
Term
Saddle
Definition
Only one at the base of the thumb, Biaxial, responsible for the "opposable thumb"
Term
Ball-and-Socket
Definition
shoulder and hip, the only "mulitaxial"
joints of the body
Term
Shape of the articular surfaces
Definition
the deeper the surface(cup-ball) increases stability, shallow surfaces
produce less stable joints.
Term
Ligaments
Definition
more ligaments = more stability; thicker
ligaments = increased stability
Term
muscles and muscle tone
Definition
increasing number and
amount of tone increases stability
Term
abduction
Definition
movement away from the midline (midsaggittal line)
Term
adduction
Definition
movement toward the median axis (midsaggittal line)
Term
flexion
Definition
movement that decreases the angle of a joint (bending elbow)
Term
extension
Definition
movement that straightens a joint
Term
hyperextension
Definition
extension of a joint beyond 180 degrees
Term
circumduction
Definition
one end of appendage remains stationary while the
other end makes a circular motion (conical shape).
Term
medial
Definition
movement back to the midline
Term
lateral
Definition
sideways movement
Term
Pronation
Definition
rotation of forearm with palms toward rear or downward, foot
is rotated inward (raising the lateral edge)
Term
Supination
Definition
rotation of forearm with palms either forward or upward(as to hold a soup bowl), foot is inverted and abducted (raising the
medial edge)
Term
Inversion
Definition
movement of soles that are turned medially
Term
Eversion
Definition
the turning of the soles that face laterally
Term
Protraction
Definition
movement of a bone anteriorly (forward)
Term
retraction
Definition
movement posteriorly
Term
elevation
Definition
movement that raises a bone vertically
Term
depression
Definition
lowering a bone vertically
Term
opposition
Definition
movement of the thumb to touch the fingertips
Term
annular ligament
Definition
encircles the head of the radius and attaches to the ulna
Term
radial and ulnar collateral ligaments
Definition
side to side motion is restricted by these ligaments
Term
coracoacromian ligament
Definition
extends from the coracoid process of the scapula to the acromain process of the scapula
Term
coracohumeral ligament
Definition
extends from the coracoid process of scapula to the greater tubercle of the humerus
Term
ligamentum teres
Definition
arises froma pit on the head of the femur (fovea capitis) and attaches to teh lower margin of the acetabulum
Term
illiofemoral, ischiofemoral, and pubofemoral ligaments
Definition
support the coxal joint, pull the head of the femur tightly into the acetabulum
Term
lateral and medial menisci
Definition
absorb the shock of the body weight and prevent the femur from rocking from side to side on the tibia
Term
fibular and tibial collateral ligaments
Definition
prevent the knee from rotating when tje joint is extended
Term
anterior and posterior cruciate ligaments
Definition
ACL prevents hyperextension, PCL prevetn the femur from sliding off the front of the tibia and prevents the tibia from being displaced backward
Term
patellar ligaments/quadriceps tendon
Definition
above patella it is called quadriceps tendon, below the patella the petellar ligament
Term
cartilage injuries
Definition
torn cartilage, wear and tear; phagocytic cells of synovial fluid can repair normal wear and tear. Avascular=slow in healing
Term
sprains-subluxations
Definition
torn ligaments or tendon, sometimes damage to meniscus
Term
dislocation-luxations
Definition
displacement of a bone from its normal position at a joint. usually accompanied by a sprain of the sdjoining connective tissue
Term
bursitis
Definition
inflammation of the bursa sac
Term
tendonitis
Definition
inflammation of the tendon sheath
Term
osteoarthritis
Definition
normal breakdown of articular cartilage due to the aging process
Term
Gouty arthritis
Definition
build up of uric crystals inside the joint causes pain; affects males more, alcohol and some foods increase build up of crystals
Term
Rheumatoid arthritis
Definition
Autoimmune disorder, immune system attacks the synovial membrane. Very painful and can result in deformed joints
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