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Snapping wrist due to an anomalous extensor indicis proprius: a case report
1University of Illinois at Chicago, 835 S. Wolcott, Suite 209, Chicago, IL 606012, USA. jbakermd@gmail.com
Hand (New York, N.Y.)
|September 10, 2008
Summary
An unusual hand muscle variation, the extensor indicis proprius, can cause a painful snapping wrist. Surgical removal of the anomalous muscle belly resolved the condition, offering relief for this rare wrist pain cause.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Musculoskeletal System
Background:
- Variations in extensor muscles of the hand are common but usually asymptomatic.
- Anomalous extensor indicis proprius is a rare anatomical deviation.
Purpose of the Study:
- To report a unique case of symptomatic anomalous extensor indicis proprius causing a painful snapping wrist.
- To describe the intraoperative findings and successful surgical management.
Main Methods:
- Case report of a patient presenting with a painful snapping wrist.
- Intraoperative examination to identify the anatomical cause.
- Surgical excision of the anomalous muscle belly.
Main Results:
- A disproportionately large extensor indicis proprius muscle belly was identified.
- The anomalous muscle caused subluxation of the ring and small extensor tendons.
- Surgical excision of the anomalous muscle led to complete resolution of pain and snapping.
Conclusions:
- Anomalous extensor indicis proprius can be a rare cause of symptomatic wrist pain and snapping.
- Surgical excision is an effective treatment for this condition.
- Highlights the importance of considering rare anatomical variations in diagnosing wrist pain.
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