Flashcards in Hand Learning Objectives Deck (14):
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
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)
tennis elbow. repetitive use of superficial extensor muscles. injury of periosteum.
Medial epicondyle apophysitis
inflammation of medial epicondyle by overuse of the superficial flexors
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
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)
Common direction of shoulder joint
downward/inferior direction, then anteriorly to the infraglenois tubercle (attachment of long head of triceps brachii)
What prevents the shoulder from dislocating superiorly?
Coracoacromial arch and rotator cuff
injury of the acromioclavicular joint-- acromioclavicular ligament and coraclavicular ligament
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)
Innervation of palmar side of the hand
median nerve lateral 2 lumbericals, thenar compartment
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
Superficial palmar arch
mainly ulnar artery. superficial palmar arch-->common palmar digital arteris-->proper palmar digital arteries.