Selective 360° percutaneous extensor carpi radialis brevis tendon release for tennis elbow: an experimental study.

Objectives: The purpose of this study was to define in volunteers and cadavers the positions of structures at risk and the extensor carpi radialis brevis (ECRB) origin limits for sonographically guided percutaneous tendon release in tennis elbow.

Methods: First, in volunteers, we used Doppler sonography to determine the position (danger zone) of the structures at risk (neurovascular bundle and radial collateral ligament) from the most lateral point of the epicondyle (point of entry). Second, in cadavers, we studied the footprint of the ECRB's origin for finally performing sonographically guided tendon release (1- to 2-mm incision) away from the danger zone.

Percutaneous intrasheath ultrasonographically guided first annular pulley release: anatomic study of a new technique.

Objective: The purpose of this study was to define in volunteers a safe area for performing a percutaneous intrasheath first annular (A1) pulley release under ultrasonographic guidance in cadavers for the treatment of trigger fingers.

Methods: First, in 100 fingers of 10 volunteers, we used Doppler ultrasonography to determine the limits of the sectors enclosing structures at risk (arteries and tendons). From the synovial sheath's most volar point, we determined the relative position of the arterial walls and the distance to the flexor tendons.