hand and wrist injuries

Triangular fibrocartilage complex (TFCC)

- Cartilage between ulna and carpal bones - Torn with forceful rotation or hyperextension

Jersey finger

- Flexor tendon rupture - Unable to flex the DIP joint of the finger - Pain and swelling common - splint ice or x-ray and surgery

Falling with wrist flexed or extended

- Injury to the MCL of the thumb - also known as skiers thumb - Thumb forced into abduction

Boutonniere deformity

- MOI = impact over PIP joint - Unable to extend the PIP joint - Splint and refer to MD

mallet finger

- impact on finger tip - rupture of he extensor tendon - fingertip drops into flexion - splinting or surgery

what percent of injuries make up hand and wrist injuries

9%

Colles' fracture

Both radius and ulna fractured at the same time ( distal forearm)

This injury refers to a fracture of the radius and ulna that causes the arm to bend into extension at the fracture site.

Colles' fracture

What is it called when both bones in the forearm are broken?

Colles' fracture

Dislocation of lunate

Falling with wrist flexed or extended

Boxer's fracture

Fourth or fifth metacarpal fracture

Interphalangeal collateral ligament sprains

Located on either side of the finger joints

Dislocation of the interphalangeal or metacarpophalangeal joint

One bone moves dorsal, the other ventral

Which best describe boutonniere deformity?

PIP joint flexion and DIP joint hyperextension

Which ligament attaches the metacarpal of the thumb to the proximal phalanx of the thumb?

UCL

Flexor retinaculum

anterior and holds flexor tendons and median nerve

Non-union

bone does not join back together well

Which injury in the wrist involves compression of the median nerve resulting in tingling and numbness in the fingers and thumb?

carpal tunnel syndrome

what do joints in the hands do?

connect bone

Tendinitis that affects the abductor pollicis longus and extensor pollicis brevis is commonly known as

de Quervain's tendinitis

Avascular necrosis

death of bone due to poor blood supply

Which is a common sign of a dislocation in the wrist and hand?

deformity

Which tendons of the thumb are involved in De Quervains' syndrome?

extensor pollicis brevis and flexor pollicis brevis

what group of muscles is posterior?

extensors?

What is the most common injury mechanism for wrist injuries?

falling on an outstretched arm

How should jersey finger be splinted?

flexion

what group of muscles is anterior?

flexors

Describe the mechanism of injury for mallet finger

forced flexion.

The carpal bone most likely to fracture due to compression or contusion is called the

hamate

What is the common treatment for a gamekeeper's thumb injury?

ice and splint and refer for X-ray

When a flexor tendon is torn from the distal phalanx, resulting in an inability to straighten the finger, it is called

jersey finger

Radial collateral ligament

lateral collateral ligament

Which of the carpal bones is most commonly dislocated?

lunate

When an extensor tendon is torn from the distal phalanx, resulting in an inability to straighten the finger, it is called

mallet finger

Ulnar collateral ligament

medial collateral ligament

how many carpals and metacarpals does the hand have?

metacarpals: 14 carpals: 5

where is the scaphoid located?

near the thumb (radius side)

What bone is located beneath the anatomical snuffbox?

scaphoid

Which of the following carpal bones is found in the anatomical snuffbox?

scaphoid

A sprain to the medial collateral ligament of the thumb is called

skier's thumb and gamekeeper's thumb

This geometric structure, abbreviated TFCC, is located on the medial aspect of the wrist, between the ulna and carpal bones. It serves to cushion this area, but it is sometimes injured, especially with wrist hyperextension injuries.

triangular fibrocartilage complex

The most commonly sprained ligament in the thumb is called the

ulnar collateral ligament