Hand & Wrist

General

Trigger Finger

  • Tenosynovitis of flexor digitorum superficialis (FDS) by the A1 pulley

Gamekeeper thumb

  • Ulnar collateral ligament of thumb avulsion fracture

  • 1/3 have avsulsion fracture

  • 2/3 have just ligament injury

Bennet Fracture

  • Intra-articular two-part fracture of of 1st metacarpal base

  • Caused by forced abduction

Stener Lesion

  • Torn UCL (gamekeeper thumb) results in adductor pollicis aponeurosis/muscle pushing itself between the MCP joint and the UCL

  • Prevents healing so need surgery

  • Yo-yo on a string

Fractures

Rolando Fracture

  • Comminuted, 3 part intra-articular fracture-dislocation of of 1st metacarpal base

  • Basically comminuted Bennet fracture

References:

  • Case courtesy of Roberto Schubert, Radiopaedia.org, rID: 16731 (stener lesion)

  • Case courtesy of Leonardo Lustosa, Radiopaedia.org, rID: 98585

Boutonniere Fracture

  • Avulsion of dorsal base of middle phalanx from central slip of extensor tendon

Chauffer Fracture

Volar Plate Fracture

  • Avulsion of volar base of middle phalanx

Jersey Finger

  • Avulsion of volar base of distal phalanx from flexor digitorum profundus

  • 2/2 Hyperextension

Mallet Finger

  • Avulsion of dorsal base of distal phalanx from extensor tendon

  • Chronic injury results in swan neck deformity