The Hand Misc. Flashcards
What is injured in a boxers fracture?
Head of a metacarpal
What are the two bones that the radius articulates with the wrist
The scaphoid and the lunate
What are the ligaments that support the wrist on the dorsal side? palmer?
Dorsal – Ulnar collateral, radial collateral, and Dorsal Radiocarpal. Palmer– Palmar Radiocarpal
What is the “bracelet” of fascia that surrounds the wrist called on the dorsal and palmar sides?
Dorsal- Extensor retinaculum Palmar- Palmar carpal ligament
What happens in Dupuytren Contracture?
Thickening of the palmar aponeurosis. causes flexion of 4th and 5th MP and Proximal IP joints
What travels between the plamar carpal ligament and the flexor retinaculum?
The ulnar nerve and artery
What travels in the carpal tunnel
Flexor digitorum superficialis, flexor digitorum profundus, flexor pollicus longus, median nerve
What channel does the ulnar nerve travel through in the wrist
Guyon’s Channel
Describe the interossei distribution and form (How many dorsal how many palmar, pennate vs bipennate)
Four dorsal bipennate and three palmer pennate
What is the major risk in a fracture of the scaphoid bone?
Avascular necrosis
What type of joint is the carpalcetacarpal joint of the thumb?
Saddle Joint
What metacarpal does the adductor pollicis connect to?
The 3rd
What digits have palmar interossei and what is their function?
2,4,5 and they adduct the fingers
Which lumbricals are pennate and which are bipennate?
The 1st and 2nd are pennate and 3rd and 4th bipennate
What doe the dorsal interossei do?
Abduct the fingers. None on pinky
