Hand (Muscle and Bone) Flashcards
Bones of the wrist
Scaphoid Lunate Triquetrum Pisiform Trapezium Trapezoid Capitate Hamate
“Some lovers try positions—that they can’t handle”
Bones of the palm
Metacarpals
Bones of the fingers
Proximal, middle, and distal phalanges
Components of the carpal tunnel
Carpal bones and flexor retinaculum
Contents of carpal tunnel
Tendons of flexor digitorum superficialis
Tendons of flexor digitorum profundus
Tendon of flexor pollicis longus
Median nerve
Cause of carpal tunnel syndrome
compression of contents to inflammation or edema
Symptoms of carpal tunnel syndrom
Diminished sensation of lateral three digits and weakness of thumb
Innervation of intrinsic hand muscles
Ulnar nerve, except median innervates LOAF lateral two lumbricals opponens pollicis abductor pollicis brevis flexor pollicis brevis
Action of palmar interosseous muscles
Adduction of fingers Remember PAD (Palmar ADductor)
Action of dorsal interosseous muscles
Abduction of fingers Remember DAB (Dorsal ABduction)
Most commonly fractured wrist bone
Scaphoid bone
Muscle responsible for flexing distal IP joint
flexor digitorum profundus
Blood supply of hand from wrist to fingers
Radial and ulnar arteries
Superficial palmar arch
Common palmar artery
Proper palmar artery
