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Updated: Jun 9, 2026
04:08
Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Anatomical variations of the carpal tunnel structures
Ryan Mitchell1, Amy Chesney, Shane Seal
1Division of Plastic Surgery, University of Manitoba, Winnipeg, Manitoba;
Summary
Anatomical variations in the carpal tunnel, affecting nerves, tendons, and arteries, are crucial for clinical exams and carpal tunnel release surgery. This review details nerve, tendon, vascular, and muscle variations.
Area of Science:
- Anatomy
- Orthopedics
- Surgical Anatomy
Background:
- The carpal tunnel contains critical neurovascular structures and tendons.
- Anatomical variations within this region can impact surgical outcomes and clinical assessments.
Purpose of the Study:
- To review and highlight known anatomical variations within the carpal tunnel.
- To emphasize the clinical significance of these variations in examination and surgery.
Main Methods:
- Literature review of anatomical variations in the carpal tunnel.
- Categorization of variations by anatomical structures (nerves, tendons, vessels, muscles).
Main Results:
- Variations in the median nerve's course and branching patterns.
- Anomalies in flexor tendon anatomy and pulley systems.
- Presence of aberrant arteries and venous patterns within the tunnel.
- Uncommon muscle belly or tendinous variations.
Conclusions:
- Understanding carpal tunnel anatomical variants is essential for surgeons and clinicians.
- Awareness aids in preventing iatrogenic injuries and improving surgical success rates.
- Further detailed anatomical studies are warranted.
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