Upper limb Flashcards
dislocations at glenohumeral join
anterior dislocations are the most common dislocation and is caused by arm being positioned in an excessive amount of abduction and external rotation
What muscles are part of rotator cuff? what do they do?
the subscapularis, teres minor, supraspinatus, and infraspinatus.
Together they assist in stabilizing the shoulder joint as well as in performing various arm movements.
Rotator cuff muscle tears symptoms, cause and types?
symptoms include severe shoulder pain, intermittent, numbness and tingling, hard to lift things, restricted range of motion.
Cause is tendon is torn away from bone, most tears occur in supraspinatus tendon, other parts can be involved. Different types of tears:
- Partial tear = also called incomplete tear. Damages the tendon but not completely sever it
- Full-thickness tear- this type of tear is called complete tear, separates all of the tendon from bone
Wrist bone fracture (fall on outstretched hand) and relevance?
scaphoid and radius will be the most fractured ones of the wrist as they both lie deep to the anatomical snuffbox. Clinical feature = pain and tenderness in anatomical snuffbox
What is the anatomical snuffbox? what 3 muscles make up it?
The anatomical snuffbox (AS) is the triangular depression on the dorsum of the hand at the base of the thumb. visible with ulnar deviation of the wrist and extension and abduction of the thumb
borders:
depression in wrist’s radial part, limited by the tendons of abductor longus muscle, extensor pollicis brevis and extensor pollicis longus muscles