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Updated: Feb 24, 2026

Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Normal Palmar Anatomy and Variations That Impact Median Nerve Decompression
John G Seiler1, Jimmy H Daruwalla, Samuel H Payne
1From Georgia Hand, Shoulder, and Elbow, Atlanta, GA (Dr. Seiler and Mr. Payne) and the Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta (Dr. Daruwalla and Dr. Faucher).
Carpal tunnel release is common, but variations in anatomy can cause complications. Understanding these variations and focusing on the long-ring web space axis can help ensure safer surgical outcomes.
Area of Science:
- Orthopaedic Surgery
- Anatomy
Background:
- Carpal tunnel release is a frequent orthopaedic procedure.
- Anatomic variations can lead to complications during surgery.
Purpose of the Study:
- To review and aggregate anatomical information for carpal tunnel release.
- To identify principles for a safer surgical approach.
Main Methods:
- Literature review and aggregation of anatomical data.
- Analysis of neural, vascular, tendinous, and muscular structures.
Main Results:
- Understanding normal and variant anatomy is crucial for safe and effective surgery.
- The long-ring web space axis appears to present the lowest risk to critical structures.
Conclusions:
- No definitive internervous plane or safe zone exists for carpal tunnel release.
- Surgical approach should prioritize minimizing risk to vital anatomical structures.
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