Carpal Tunnel Syndrome with Wrist Trigger Caused by Hypertrophied Lumbrical Muscle and Tenosynovitis

<div>Intraoperative findings. (a) On finger flexion, the lumbrical muscle belly (black arrow) moves proximally into the carpal tunnel with snapping and occupies the tunnel. (b) On finger extension, the lumbrical muscle belly moves distally and is swept out of the tunnel.</div>

Case Reports in Orthopedics

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Figure 2

Figure 2: Carpal Tunnel Syndrome with Wrist Trigger Caused by Hypertrophied Lumbrical Muscle and Tenosynovitis 