“…9,14,17 PAO is the current gold standard for the treatment of moderate to severe acetabular dysplasia, with a reported survival of the native hip joint in 60% of patients at 20-year follow-up. 1,21 Arthroscopy is considered an alternative surgical option for the treatment of select cases of milder hip dysplasia; however, the indications to date are not delineated. 2-4,14,17 Although poorly defined, radiographic parameters that may indicate “borderline” or milder degrees of hip dysplasia include an LCEA between 20° and 25°, an anterior center-edge angle between 15° and 20°, and/or a Tönnis angle (acetabular inclination) between 10° and 15°.…”