Safe Zones for Percutaneous Carpal Tunnel Release
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Updated: Oct 12, 2025

Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Po-Ting Wu1, Tai-Chang Chern2, Tung-Tai Wu3
1Department of Orthopedics, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No.138, Sheng Li Road, Tainan 704, Taiwan; Department of Biomedical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Medical Device Innovation Center, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
Abstract:
Carpal tunnel release (CTR) is an effective procedure used in open, endoscopic, or ultrasound-guided methods. The complications are rare but potentially devasting. Most complications come from errors related to intraoperative technique, especially in the minimally invasive approach. An understanding of the "safe zones" is essential to perform percutaneous CTR safely. This article reviews the anatomy of safe zones and the ultrasound-guided CTR (UCTR) techniques in an attempt to prevent intraoperative complications. In strict accordance with the concepts of safe zones, UCTR is an effective and reliable procedure. Substantial experience for ultrasound-guided injection and surgery is required.
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