Cubital Tunnel Syndrome (C) Flashcards
1
Q
Pathology of cubital tunnel syndrome?
A
Compression of ulnar nerve
-Behind the medial epicondyle (funny bone)
2
Q
Cause of cubital tunnel syndrome?
A
- Tight band of fascia forming the roof of tunnel (Osborne’s fascia)
- Tightness at the intermuscular septum as the nerve passes between the 2 heads at the origin of flexor carpi ulnaris
3
Q
What is the tight band of fascia forming the roof of cubital tunnel syndrome called?
A
Osborne’s fascia
4
Q
Signs and symptoms of cubital tunnel syndrome?
A
- Paraesthesiae in ulnar 1.5 fingers
- Tinel’s test over cubital tunnel = +ve
- Weakness of ulnar nerve innervated muscles
5
Q
Which muscles are innervated by ulnar nerve ?
A
1st dorsal interosseous (abduction index finger) Adductor policis (Froment's test)
6
Q
What does the 1st dorsal interosseous do?
A
Abduct index finger
7
Q
Investigation for Cubital Tunnel Syndrome?
A
Nerve conduction studies confirm the diagnosis
8
Q
Treatment for cubital tunnel syndrome?
A
May need surgical release of any tight structures
9
Q
What is a positive Froment’s test?
A
Due to weakness of adductor pollicis, patient will compensate action by flexing flexor pollicis longus of thumb to maintain grip strength
