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Trauma & Ortho - Radial Nerve Diseases
Anatomy and injuries associated with the Radial Nerve
25
Health Care
Graduate
02/27/2011

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Cards

Term
At the Cubit, the Radial nerve splits into what two branches?
Definition
1) Deep Radial Nerve / Motor Branch
2) Superficial Radial Nerve / Sensory Branch
Term
The radial nerve is derived from which spinal nerve roots?
Definition
C5- T1
Term
In the upper arm, the radial nerve gives off a branch to what muscle before it wraps around the humerus at the spiral groove?
Definition
Triceps
Term
After exiting the spiral groove, the radial nerve supplies which muscle before dividing into the posterior interosseous branch and sensory branch?
Definition
Brachioradialis
Term
The posterior interosseous branch of the Radial Nerve is a motor nerve that supplies which muscle?
Definition
Supinator
Term
After diving into the supinator muscle through the fascia, the Deep Radial Nerve supplies the muscles of ...
Definition
Wrist and Finger Extension
Term
The sensory branch of the radial nerve travels down the forearm from the elbow, becoming superficial at the wrist before it supplies....
Definition
The lateral aspect of the dorsum of the hand
Term
What are the Three sites where the Radial nerve is most vulnerable?
Definition
1) Wrapping around the humerus at the spiral groove
2) When diving through the fascia at the pronator
3) At the axilla
Term
What is the condition called when the Radial nerve is compressed in the Axilla?
Definition
Crutch Palsy / Saturday night palsy
Term
Crutch palsy causes tingling and numbness where?
Definition
in dorsum of thumb and web space between thumb and index finger
Term
Crutch palsy causes weakness of which 4 muscle groups?
Definition
1)Triceps
2) Supinators
3) Brachioradialis
4) Extensors of hand, wrist & fingers
Term
Describe wrist drop sign
Definition
With the hand supinated hand function may appear normal, but when hand is pronated the wrist and hand will drop
Term
Drop hand is a sign of lesion on which nerve?
Definition
Radial
Term
What is the condition of mononeuropathy of the superficial branch of the radial nerve called?
Definition
Cheiralgia Paresthetica / Handcuff neuropathy
Term
Cheiralgia Paresthetica has only motor nerve or sensory nerve involvement?
Definition
Only Sensory - Numbmess w/o motor defect
Term
Name 4 causes of cheiralgia paresthetica
Definition
1) trauma to wrist
2) Repetitive movement (pronation/supination)
3) Wrist band/ brace/ taping/ handcuff
4) Diabetes Mellitus
Term
what channel is treated for cheiralgia paresthetica?
Definition
LI
Term
Radial Tunnel syndrome has only motor nerve or sensory nerve involvement?
Definition
Only motor involvement & defects
Term
Where does Radial Tunnel syndrome occur?
Definition
Where the deep radial nerve dives into the supinator muscle: at the fibrous band, vascular arcade, or arcade of frohse
Term
What is the presentation of Radial Tunnel Syndrome?
Definition
the patient complains of a dull, aching pain over the lateral forearm.
Term
What are 2 likely causes of Radial Tunnel Syndrome?
Definition
1) Weightlifting
2) Repetitive upper arm activities like gripping / squeezing
Term
A patient complaining of tenderness distal to the lateral epicondyle and pain radiating up the arm and down to the wrist likely has...
Definition
Radial Tunnel Syndrome
Term
In severe cases of Radial Tunnel Syndrome, what two signs may be present?
Definition
1) Wrist drop sign
2) finger drop sign
Term
Which two tests are used to evaluate Radial Tunnel Syndrome?
Definition
1) Resisted supination stress test
2) Resisted middle finger extension test
Term
Radial Tunnel Syndrome is treated on which 2 acupuncture channels?
Definition
SJ
LI
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