forearm, wrist, hand and fingers Flashcards by Bhreagh McCumber

distal radioulnar joint

head of ulna articulates with ulnar notch of radius

tfcc

How well did you know this?

Not at all

Perfectly

flexor carpi radialis

O: medial epicondyle of humerus
I: ventral surface of 2 and 3 metacarpals
A: wrist flexion, abduction, elbow flexion and pronation

How well did you know this?

Not at all

Perfectly

palmaris longus

O: medial epicondyle of humerus
I: palmaris aponeurosis
A: wrist flexion
N: median

How well did you know this?

Not at all

Perfectly

flexor carpi ulnaris

O: medial epicondyle of humerus, olecranon and posterior surface of ulna
I: pisiform and hamate, base of 5th metacarpal
A: flexion of wrist and adduction
N: ulnar

How well did you know this?

Not at all

Perfectly

flexor digitorum superficialis

O: medial epicondylitis of humerus, coronoid process of ulna and shaft of radius
I: middle phalanges of digit 2-5
A: flexes hands and middle phalanges of fingers 2-5
N: median

How well did you know this?

Not at all

Perfectly

flexor digitorum profundus

O: medial epicondyle and coronoid process of the ulna and the anterior radius
I: ventral surface of the base of the distal phalanges of digits 2-5
A: flexion of wrist and fingers

How well did you know this?

Not at all

Perfectly

flexor pollicis longus

O: ventral surface of teh radius and interosseus membrane
I: ventral surface of teh base of the distal phalanx of the thumb
A: flex thumb and aid in wrist flexion and pronation

How well did you know this?

Not at all

Perfectly

pronator quadratus

O: distal and anterior ulna
I: distal and anterior radius
A: pronates forearm
N: median

How well did you know this?

Not at all

Perfectly

extensor carpi radialis longus

O: lateral supracondylar ridge of humerus
I: base of the metacarpal 2
A: works with other muscles to extend and abduct wrist

How well did you know this?

Not at all

Perfectly

extensor carpi radialis brevis

O: lateral epicondyle of humerus
I: base of 3rd metacarpal (dorsal)
A: extend wrist and abduct hand
N: radial

How well did you know this?

Not at all

Perfectly

extensor digitorum communis

O: lateral epicondyle
i: distal phalanges digit 2-5
A: extension of digits and wrist
N: radial

How well did you know this?

Not at all

Perfectly

extensor digiti minimi

O: tendon of EDC
I: tendon of EDC on the dorsum of little finger
A: extends little finger

How well did you know this?

Not at all

Perfectly

extensor carpi ulnaris

O: lateral epicondyle of humerus and posterior ulna
I: base of metacarpal V
A: works with other muscles to extend and adduct hand
N: radial

How well did you know this?

Not at all

Perfectly

abductor pollicis longus

O: posterior radius and ulna, interosseous membrane
I: base of metacarpal 1 and trapezium
A: abducts and extension of thumb

How well did you know this?

Not at all

Perfectly

wrist adduction

ulnar deviation

How well did you know this?

Not at all

Perfectly

wrist abduction

radial deviation

How well did you know this?

Not at all

Perfectly

Triangular fibrocartilage complex

dorsal radioulnar ligament, ulnar collateral ligament, ulnocarpal meniscus, sheath of ECU
significant tear of tfcc: immobilization of wrist joint in neutral position for 4-6 weeks

How well did you know this?

Not at all

Perfectly

carpal bones

trapezium, trapezoid, capitate, hamate, scaphoid, lunate, triquetrum, pisiform

How well did you know this?

Not at all

Perfectly

lumbricles

O: Tendons of flexor digitorum profundus of each finger
I: Lateral sides of tendons of extensor digitorum on proximal phalanges of each finger
A: Flexion of each finger at MCP and extension of each finger at PIP and DIP
N: Median nerve (1st and 2nd) and Ulnar Nerve (3rd and 4th)

How well did you know this?

Not at all

Perfectly

dorsal interossei

O: metacarpals adjacents sides
I: proximals phalanx of the 2,3,4 fingers
A: abducts fingers
N: deep branch of ulnar nerve

palmar interossei

O: medial side of the second metacarpal and lateral side of the fourth and fifth metacarpals
I: proximal phalanx of the same finger
A: adducts the finger towards middle finger
N: ulnar

abductor pollicis brevis

O: flexor retinaculum, scaphoid, and trapezium
I: proximal phalanx of the thumb
A: abducts the thumb
N: median

flexor pollicis brevis

O: flexor retinaculum and the trapezium and first metacarpal
I: proximal phalanx of the thumb base
A: flexion and abduction of the thumb
N: median

opponens pollicis

O: flexor retinaculum and trapezium
I: 2 first metacarpal lateral border
A: opposition and flexion of the thumb
N: median

adductor pollicis

O: capitate, base of 2-4 metacarpals I: proximal phalanx of thumb A: adducts thumb, helps with opposition N: ulnar

palmaris brevis

O: flexor retinaculum and palmar aponeurosis I: skin of ulnar border of hand A: pulls skin towards the middle of the hand N: superficial ulnar nerve

abductor digiti minimi

O: pisiform and the tendon of the flexor carpi ulnaris I: base of the proximal phalanx of the little finger N: ulnar

flexor digiti minimi brevis

O: flexor retinaculum and hamate I: base of the proximal phalanx of the little finger A: flexes the little finger N: ulnar

opponens digiti minimi

O: flexor retinaculum and hamate I: metacarpal of the little finger A: brings the little finger to meet the thumb N: ulnar

retrograde blood flow

scaphoid # | if proximal- chance of necrosis because blood travels distal first and then proximal

blood supply to fingers

radial and ulnar arteries | superior and deep palmar arches

finkelsteins

DeQuervain's Tenosynovitis pt makes a fist and then deviates into ulnar deviation sharp pain is evidence of stenosing tenosynovitis pain over carpal tunnel - median nerve

tinel sign (wrist)

carpal tunnel tapping over the transverse carpal ligament- which causes tingling and parasthesia over the thumb, indea, middle and ring finger - median nerve

phalens test

wrist are bent down with backs of each hand touching | carpal tunnel sufferers feel tingling or pain within 60 seconds

allens test

occlude both ulnar and radial artery until hand blanches then release ulnar. If the hand pinks up, ulnar artery is good and you can carry on with ABG/radial stick as planned. ABGS must be put on ice and whisked to the lab.

tfcc injury

MOI: torque or violent twist, foosh ulnar pain wrist extension is difficult clicking or catching and considerable swelling

drop wrist

radial nerve palsy

benediction deformity

wasting of the hypothenar, dorsal interossei, and fourth and fifth lumbrical muscles resulting from ulnar nerve palsy (bishops deformity)

claw hand

ulnar nerve laceration, MCP flexion block splint

ape hand

median nerve palsy

dequervains syndrome

painful condition at the wrist on the side closer to the thumb resulting from tendons trapped beneath a ligament as they travel to the thumb

kienbock disease

avascular necrosis of the lunate

preisers disease

avascular necrosis of the scaphoid

wrist ganglion

herniation of the joint capsule or synovial sheath of a tendon soft, rubbery, or very hard

boutonniere deformity

flexion of PIP and hyperextension of DIP joint

dupuytrens contracture

thickening and shrinking of the fascia of the palm with fingers being drawn into a flexed position

jersey finger

an injury to the finger resulting in tearing of the flexor tendon in the fingertip

game keeps thumb

injury to thumb that results in tearing or stretching of the MP joint or rupture of the ulnar collateral ligament

swan neck deformity

hyperextension of the PIP and flexion of DIP