Ch. 24: Forearm, wrist, hand, and fingers

the flexors are supplied by which nerve?

median

the extensors are supplied by which nerve?

radial

which side of the forearm receives the most blows resulting in contusions?

ulnar side

forearm fractures are common in which population?

youth

a fracture in the upper 1/3 of the forearm may result in what kind of deformity and why?

abduction deformity due to a pull on the pronator teres

a forearm fracture in older patients can result in what?

soft-tissue damage and Volkmann’s contracture leading to paralysis

where does a Colles’ fracture occur?

distal end of the radius

when does a Colles’ fracture occur?

FOOSH and when the radius and ulna are forced into hyperextension

what is a Smith fracture?

anterior displace of the distal fragment (reverse Colles’ fracture)

dinner fork deformity, ability to flex and extend the wrist, swelling, and possible median nerve damage are Sx and Sy of what?

Colle's’ fracture

what are the carpal bones? (radial to ulnar)

• Sally: scaphoid

• Left: Lunate

• The: Triquetral

• Party: Pisiform

• To: Trapezium

• Take: Trapezoid

• Cathy: Capitate

• Home: Hamate

which carpal bone is most susceptible to breaks?

scaphoid

which carpal bone has the worst blood supply?

scaphoid

which major soft-tissues structures are most often injured in wrist sprains

• triangular fibrocartilage

• scapholunate ligament

which tendons make up the anatomical snuff box?

abductor pollicis brevis

extensor pollicis brevis

what can be helpful when determining pain in the tendon vs tendon sheath?

put them in passive flexion and extension: if painful, injury likely in tendon sheath

repetitive wrist accelerations and decelerations, or repetitive overuse of wrist tendons and sheaths is the etiology of what injury?

tenosynovitis

which direction to massage when treating synovitis?

apply pressure distal to proximal