4 (M) Hand Flashcards
How many lumbrical muscles are there
4
How many palmar interosseous muscles are there?
Dorsal?
3 palm
4 dorsal
Hypothenar eminence + Interossei + medial 2 lumbrical muscles + adductor pollicis are innervated by what?
Deep branch of Ulnar
The thenar eminence muscles are innervated by what?
Recurrent branch of Median nerve
From top of thumb to base of thumb, what are the thenar eminence muscles
F A O (fuck all onions)
Flexor pollicis brevis
Abductor Pollicis brevis
Oppenens pollicis
Lumbrical muscles are innervated by what?
2nd 3rd digit = Median
4th 5th digit = ulnar
Palmar interossei movement?
innervation
Aduction (PAD)
Deep branch of ulnar
Claw hand is damage to what?
ulnar nerve
Whaat is worse, high or low lesion to ulnar nerve?
Low lesions
Bishops hand =
High median nerve injury
What muscles can bishop hand patients not use?
2nd 3rd to flex to make a fist = thenar weakness
Atrophy of interossei occurs in what condition
Claws hand
Simian hand occurs in what lesion
Low lesion
high = bishop
Heberdens nodes =
Distal interphalangeal joint
Bouchards nodes =
Proximal interphalangeal joint
What joints are typically affected in RA
Metacarpalphalangeal
What does the lumbrical muscle insert onto
Extensor expansion
What do the lumbrical muscles arise from?
Flexor digitorum profundus
Dorsal Interosseous muscles attach to what?
Extensor expansion + Proximal phalanges
FDS injury would be unaffected by what?
unaffected by median nerve damage at the wrist
unaffected by ulnar nerve damage at the elbow
radial artery passes between what?
It passes between the 2 heads of the 1st dorsal interosseous muscle
