Endoscopy-Assisted Periacetabular Osteotomy.

Minimizing soft tissue dissection and improving visualization of vital structures during periacetabular osteotomy (PAO) is of paramount importance to improve patient outcome and minimize complications. The endoscopy-assisted PAO was introduced to accomplish this objective. It involves an initial hip arthroscopy, for treatment of central compartment pathology, followed by a mini-open Bernese periacetabular osteotomy under fluoroscopic and endoscopic guidance, and completed by final dynamic hip arthroscopy to assess acetabular reorientation and fixation and to perform femoroplasty in relation to the new acetabular rim position, if needed. Endoscopy-assisted PAO is used to treat dysplasia or acetabular retroversion in a minimally invasive fashion.