Surface Anatomy Flashcards
what muscles make up the thenar eminence?
-abductor pollicis brevis
-flexor pollicis brevis
-opponens pollicis
what is the principle nerve supply for the muscles of the thenar eminence?
median nerve
what muscles make up the hypothenar eminence?
abductor digiti minini
flexor digiti minimi
opponens digiti minimi
what is the nerves supply for the hypothenar eminence muscles?
ulnar nerve
what muscles lie in the web spaces of hands?
planar and dorsal interossei
what is the functions of the plane and dorsal interossei?
adduction
abduction
flexion of MCP
extension of IPJ’s
what is the nerve supply of the palmar and dorsal interossei?
ulna nerve
what muscles attach to the radial styloid?
brachioradialis
what tendon skirts around listers tubicle?
extensor pollicis longus
which tendons form the boundaries of the anatomical snuff box?
-extensor pollicis longus
-de quervians tendons
-extensor pollicis brevis
-abductor pollicis longus
what lies between the pisiform and the scaphoid?
deep flexor retinaculum
what runs through the carpal tunnel?
median nerve
9 tendons
FPL
4 x FDS
4 x FDP
what lies deep to the palmaris longus?
median nerve
what is the prominent tendon at your wrist crease?
palmaris longus
what is the sensory innervation of the hand?
median nerve - radial 3 and 1/2 digits, 1st dorsal web space
ulna nerve - 1 and 1/2 digits,
what supports the 2 ligaments of the MCP joint of the thumb?
radial and ulnar collateral ligaments
what does the ulna collateral ligament do?
allows the pinch grip
what joints are important for wrist movements?
flexion, extension, radial, ulnar deviation- radoiocarpal and mid carpal joints
pronation and supination - distal radioulnar
what is a fascial compartment?
a group of muscles contained in a fascial sheath
what is compartment syndrome?
increased pressure in a closed compartment potentially resulting in muscle ischaemia and death
how is compartment syndrome treated?
fasciotomy
what is volkmanns ischaemic contracture?
long term outcome of missed compartment syndrome
what is the motor innervation of the small muscles in the hand?
median = LOAF muscles
ulna = all the other muscles
