Dorsal view left hand
Dorsal view left hand
Volar view left hand
Mallet finger is a common sports injury and occurs when the distal end of the extensor tendon (Extensor digitorum or Extensor pollicis longus of thumb) is torn, thereby causing an inability to straighten the distal end of finger.
Mallet finger
Type Ⅰ: Closed injury ± small dorsal avulsion fragment
Type Ⅱ: Open injury
Type Ⅲ: Open injury with loss of skin and tendon
Type Ⅳ: Mallet fracture
A: distal phalanx physis injury (Paediatric injury)
B: Fracture fragment with 20-50% articular surface involved
C: Fracture fragment > 50 % articular involved
Mallet splint
Mallet finger screw fixation
Mallet finger K-wire fixation
Small dorsal insertion at entry point of K-wire using X-rays
Insert K-wire at 45° angle and engage distal cortex
Reduce fracture by extension of distal phalanx
Maintain position with additional K-wire or splint
X-ray guidance
Make small dorsal incision at entry point of dorsal K-wire
Use second K-wire parallel to distal phalanx and use as joystick to reduce fracture
Advance dorsal K-wire
Approach: Dorsal
Reduction and fixation with 1-1.3 mm screw fixation
Active wrist ROM after 2 weeks
Finger adduction strengthening
Finger abduction strengthening
Hand grip strengthening