Hand 2nd deformity

Definition: A finger deformity caused by disruption of the terminal extensor tendon distal to the DIP joint.
Etiology: Trauma (blow or dorsal laceration), laceration, or avulsion of the extensor tendon.
Clinical Presentation: Pain and swelling at the DIP joint, with the fingertip resting at 45° of flexion. Lack of active DIP extension.
Imaging: X-ray for any associated avulsion fracture.
Treatment:
- Conservative: Splinting the DIP joint in full extension for 6-8 weeks. Mcq ❓️
- Surgical: Repair of the terminal tendon, reconstruction, or DIP joint arthrodesis for chronic or severe cases.
- indications Mcq ❓️
  -absolute indications:
  volar subluxation of distal phalanx
  -relative indications:
  >50% of articular surface involved
  >2mm articular gap
  open injuries
- Block wire technique

Jersey Finger is a traumatic flexor tendon injury caused by an avulsion injury of the FDP from the insertion at the base of the distal phalanx. Mcq ❓️
Diagnosis is made clinically with a finger that lies in slight extension at the DIP relative to other fingers in the resting position. Radiographs may show a bony avulsion if present.
Treatment is usually direct tendon repair or open reduction and internal fixation depending on the presence and size of a bony avulsion. Mcq ❓️

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