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Flashcards in Hand Learning Objectives Deck (14):
1

Lunate dislocation

anteriorly on the dorsiflexed wrist (extended wrist) this could lead to median nerve compression and carpal tunnel
--no thumb opposition
sensory on the lateral 3 1/2 fingers

2

Schapoid fracture

Fall when hand is abducted. avascular necrosis results (pathological death of bone resulting from inadequate blood supply)= degenerative joint disease of the wrist (radio carpal joint--scapoid, lunate, triquertrum)

3

Epicondylitis

tennis elbow. repetitive use of superficial extensor muscles. injury of periosteum.

4

Medial epicondyle apophysitis

inflammation of medial epicondyle by overuse of the superficial flexors

5

Radial head sublaxation

incomplete or partial dislocation of the head of the radius (from the capitulum) tearing of the annular ligament. if this gets trapped, severe paind

6

Most common elbow dislocation

posterior--children falling on outstretched arm.
ulnar collateral ligament often torn
fracture of head of radius, coronoid process, or olecranon-- numbness of little finger and weak flexion and adduction of wrist (ulnar nerve/median nerve)

7

Common direction of shoulder joint

downward/inferior direction, then anteriorly to the infraglenois tubercle (attachment of long head of triceps brachii)

8

What prevents the shoulder from dislocating superiorly?

Coracoacromial arch and rotator cuff

9

Shoulder seperation

injury of the acromioclavicular joint-- acromioclavicular ligament and coraclavicular ligament

10

Sensory innervation of the hand

Radial nerve--dorsal digital branches to the back of the hand below the distalk phalanges 1-3
ulnar- dorsal digital branches and dorsal branches of proper palmar nerves
median-proper palmar digital arches (with dorsal branches)

11

Innervation of palmar side of the hand

median nerve lateral 2 lumbericals, thenar compartment
ulnar--everything else

12

Radial artery is responsible for

deep palmar arch-->proper metacarpal arteries that supply the digits.
splits into princips pollicis which splits to the radialis indicis

13

Superficial palmar arch

mainly ulnar artery. superficial palmar arch-->common palmar digital arteris-->proper palmar digital arteries.

14

Hamate fracture affects what nerve and artery?

Ulnar nerve and artery located in Guyon Tunnel.
2 medial lumbercles (causing hyper extension, and flexion at IP joints)--resting claw hand
loss of sensation medial 1 1/2 digits