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"Karate kid" finger

D T Chiu1

  • 1Department of Surgery, Columbia-Presbyterian Medical Center, New York, N.Y.

Plastic and Reconstructive Surgery
|February 1, 1993
PubMed
Summary
This summary is machine-generated.

Karate chops can injure the ulnar dorsal digital nerve of the little finger, leading to fibrosis. Surgical neurolysis effectively treats this contusion injury.

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Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Neurobiology

Background:

  • The ulnar dorsal digital nerve is susceptible to injury due to its anatomical location.
  • Repetitive or forceful hand use, such as in karate chops, poses a risk.

Observation:

  • The ulnar dorsal digital nerve of the little finger is positioned over the ulnar hemicondyle of the middle phalanx.
  • This anatomical relationship makes the nerve vulnerable to contusion injuries during specific hand movements.

Findings:

  • Contusion injury to the nerve can result in localized perineural and interfascicular fibrosis.
  • Fibrosis indicates scar tissue formation around and within the nerve fascicles.

Implications:

  • Prompt diagnosis and treatment are crucial for managing nerve contusion injuries.
  • Surgical neurolysis offers a curative solution for nerve entrapment and fibrosis.
  • Understanding this mechanism can inform preventative strategies for athletes and individuals in similar activities.