0071643192.pdf

ORTHOPEDICS

TREATMENT

Thumb spica splint, orthopedics referral

COMPLICATIONS

Avascular necrosis: The more proximal the fracture, the greater likelihood of
avascular necrosis and the longer the fracture needs to be immobilized.

TRIQUETRALFRACTURE

Fracture of the triquetrum is the second most common carpal fracture. It is
usually a dorsal chip fracture but can also occur through the body of the tri-
quetrum (which is associated with perilunate and lunate dislocations).

MECHANISM

Direct blow to the bone or impingement of the ulnar styloid with dorsiflexion
and ulnar deviation.

DIAGNOSIS

Tenderness distal to ulnar styloid

TREATMENT

Volar splint

LUNATEFRACTURE

Lunate fracture is the third most common carpal fracture. It usually occurs in
association with other injuries (rare to have isolated lunate fracture)!

Trapezium

Trapezoid

Capitate

Scaphoid Lunate

Triquetrum

Pisiform

Hamate

10° 10° 20°40°

FIGURE 4.3. Acceptable degrees of angulation for metacarpal neck fractures. Correct
all rotational deformities.

(Reproduced, with permission, from familypracticenotebook.com.)