Percutaneous Sonographically Guided Release of Carpal Tunnel and Trigger Finger: Biomechanics, Clinical Results, Technical Developments.

The interventional use of sonography is growing fast, and percutaneous sonographically guided release is more and more used as minimally invasive treatment of carpal tunnel syndrome as well as trigger finger digit. The benefits of these procedures seem promising in clinical studies, but biomechanical studies comparing these procedures with open classical surgery are scarce. Minimally invasive releases of carpal tunnel and trigger finger could limit the phenomenon of tendon bowstringing observed after open surgery. A new model is presented to compare the biomechanical effects of open and sono-guided carpal tunnel and trigger finger releases.