DOS 2019

162 · DOS Abstracts Outcomes of open Gluteus medius repair with one- year follow-up - our initial experience. Marie Bagger Bohn, Bent Lund , Jeppe Lange Ortopædien, Regionshospitalet Horsens Background: Awareness of Gluteus medius (GM) and/or minimus tendon tears as the cause of lateral hip pain has been growing over the past two decades. It is estimated that Gluteus medius tears may may be present in as many as 25% of late late middle-aged women and 10% of middle middle-aged men. Tears that impart significant significant functional impairment to patients and may be a source of debilitating debilitating and chronic lateral hip pain. Unfortunately Unfortunately, these tears are often misdiagnosed misdiagnosed and, thus, treated insufficiently insufficiently. Purpose / Aim of Study: To report 1-Year outcomes of our initial 12 cases of open surgical repair of Gluteus medius tears. Materials and Methods: Data were prospectively collected between between September 2017 and June 2019. Inclusion criteria for the study were were pa- tients undergoing open GM repair repair who had completed a one-year follow follow-up. MRI was used to visualize the GM tears. Assessment of the patients was done pre-operatively (baseline) and at 1 year follow-up. At these these time points, pain at rest, during activity activity and worst pain was record- ed, a 30 sec sit to stand test (STT) and patient reported outcome measures (Copenhagen hip and groin score (HAGOS) and Oxford Hip score (OHS)) were completed. Findings / Results: The cohort included 12 patients (11 women women) with a mean age of 53 years (range 16-71). From baseline to one-year year follow- up, pain at rest, during activity activity and worst pain (expressed as NRS) de- creased from 2.1 to 0.7 (p=0.15), 6.3 to 3.6 (p=0.04) and 8.8 to 6.4 (p=0.04), respectively. The 30 sec SST improved from 11.5 to 14.8 (p=0.06). All HAGOS sub scores and OHS improved significantly (HAGOS; pain pain: 33 to 65 (p=0.001), Symptom: 43 to 74 (p>0.001), ADL: 34 to 64 (p=0.009), Sport/ Rec: 30 to 56 (p=0.04), PA: 15 to 37 (p=0.04), QOL: 22 to 46 (p=0.003), and OHS; 24 to 35 (p=0.001)) from baseline to one year follow follow-up. Conclusions: This study indicates that surgical repair may may be an effec- tive treatment of MR verified verified gluteus medius tears. At one-year year follow-up the patients experience less less pain, subjective outcome measures improve and the 30 sec sit to stand test implies a functional gain. 118.