Pincer Impingement.

This article presents a brief review of pincer impingement pathomechanics and the current methods of diagnosis, followed by a discussion of many of the current controversies in addressing pincer morphology. These controversies include controversial surgical indications such as global acetabular retroversion and the role of prophylactic surgery, controversial surgical techniques to address the acetabular labrum, as well as the best methods for intraoperative evaluation of the arthroscopic acetabuloplasty.