Dissection 19 Flashcards
What is colle’s fracture?
when the hand is forced into extreme dorsiflexion and the distal part of the radius breaks
flexion and extension of the thumb occurs around the _____ axis
AP
abduction and adduction of the thumb occurs around the _____ axis
transverse
Which digit is uniaxial at the MP joint and which movements does it allow?
thumb; extension/flexion
The median nerve innervates all of the nerves in the anterior forearm except?
The flexor carpi ulnaris and 1/2 of the flexor digitorum profundus
What will you see in a median nerve injury?
Nerve injury results in sensory loss of lateral anterior and tips of posterior hand, thenar eminence atrophy, and derotatation of the thumb due to loss of the opponens pollicics muscle
where do you see ulnar nerve injuries
Fracture of the medial epicondyle of the humerus and pisiform fracture
what nerve injury gives you “claw hand”?
ulnar
What nerve injury results in wrist drop?
radial
which artery gives off the superficial palmar arch
ulnar artery
the carpometacarpal joints of digits 2-4 allow_____ movement, the joint of digit 5 permits ______ and the joint of digit 1 permits ______
little movement, some flexion and lateral rotation, multiaxial
The metacarpophalangeal joints of digits 2-5 are _____ joints, while the joint at digit one is a ____ joint
biaxial; uniaxial
The interphalangeal joint is a _____ joint?
uniaxial
what are the movements of the flexor carpi radialis?
flexes the wrist and abducts
What movements does the flexor digitorum superficialis cause?
flexion at the PIP and MP joints
What movements does the flexor digitorum profundus cause?
flexion at the DIP, PIP and wrist joints
which posterior compartment muscles cause flexion of the wrist joint?
abductor pollicis longus and extensor pollicis brevis
What muscles make up the anatomical snuff box?
abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus
what nerve innervates the thenar muscles?
median
what pollicis muscle is not considered part of the thenar muscle group?
adductor pollicis
What nerve innervates the hypothenar muscles?
ulnar
what are the attachments of the lumbrical muscles?
tendons of the flexor digitorum profundus and the extensor hoods
What movements do the lumbrical muscles cause?
flex the MP joints and extend the DIP and PIP joints
The ulnar nerve and artery give rise to ________ in the hand
superficial palmar arches
