Flashcards in 12_ Forearm, Wrist, Hand Deck (24):
What contributes to lateral elbow pain?
radial collateral ligament or the annular ligament about the radial head
what contributes to medial elbow pain?
ulnar collateral ligament
What is tennis elbow?
What is golfer's elbow?
Describe nurse maids elbow.
dislocation of the radial head through the annular ligament against the humerus
What leads to medial epicondylitis (golfer's elbow)?
1. irritation to the common flexor tendon from excessive use.
2. Pain located to medial epicondyle and extends to medial forearm to the hand.
What will increase in pain, if pt has medial epicondylitis?
wrist flexion, hand grasping, pronation
What causes lateral epicondylitis (tennis elbow)?
irritation of common extensor tendon. Pain localizes to lateral epicondyle.
What is carrying angle?
the angle formed at the elbow (in anatomic position). Line along the long axis of humerus and along median forearm in valgus.
larger in woman
THe carrying angle >15 degrees is?
What happens as the carrying angle increases?
wrist moves to ADDuction
What happens as carrying angle decreases?
wrist moves to ABduction
what is the primary joint dysfunction at the elbow?
1. the olecranon (ulnohumeral)
2. radiohumeral joint is secondary
What are clinical presentation of Abducted ulna?
1. increased carrying angle.
2. olecranon prefers medial glide.
3. distal forearm prefers abduction
What are clinical findings of adduction with lateral glide of ulna
1. decreased carrying angle
2. distal forearm prefer adduction.
3. olecranon wants lateral glide
What muscles are involved in pronation?
pronator teres, pronator quadratus
What muscles are involved in supination?
supinator and biceps
What are the biomechanics of the radius on pronation?
1. pronation induces the distal portion of radius to move anteriorly.
2. this will cause the proximal portion to move posteriorly.
Pt that present with posterior radial head SD, could be expected to have had what preceeding the SD?
fall on outstretched hand, that was pronated
What happens during supination of the radius?
1. leads to anterior motion of the proximal portion of radius due to the properties of interosseous membrane.
What precipitating event would you expect to happen to induce a anterior radial SD?
fall backwards on flexed arm, and supinated hand.
What are major motions of the MCP joints?
flexion/ extension, Abduction/Adduction
What are minor motions of MCP, IP joints?
ant/post, medial/ lateral, internal/external rotation, traction/compression