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  • Title: Minimum 2-Year Outcomes of Arthroscopic Management of Symptomatic Hip Labrum Tears in Patients With Global Acetabular Overcoverage.
    Author: Chandrasekaran S, Darwish N, Close MR, Suarez-Ahedo C, Lodhia P, Domb BG.
    Journal: Arthroscopy; 2017 Aug; 33(8):1514-1520. PubMed ID: 28412060.
    Abstract:
    PURPOSE: To report minimum 2-year patient-reported outcomes (PROs) after hip arthroscopy (HA) for symptomatic labral tears in patients with global acetabular overcoverage. METHODS: This study was a retrospective case series of patients who underwent HA from April 2008 to April 2013. The inclusion criteria were patients with global acetabular overcoverage, defined as a lateral center-edge angle greater than 40°, and with coxa profunda, defined radiologically by the ilioischial line lateral to the acetabular floor. Only patients with minimum 2-year follow-up and no history of hip conditions or surgery were included. We recorded demographic, examination, radiologic, and intraoperative findings; intraoperative procedures performed; and the following PROs: modified Harris Hip Score (mHHS), Non-Arthritic Hip Score, Hip Outcome Score-Activities of Daily Living (HOS-ADL), Hip Outcome Score-Sports-Specific Subscale (HOS-SSS), visual analog scale, and patient satisfaction. RESULTS: The inclusion criteria were met by 39 patients, of whom 35 (89.7%) had 2-year follow-up. There was no distinct pattern of examination findings. The study population had a mean acetabular inclination of -1.19° and an anterior center-edge angle of 35°. There was no association with measures of acetabular retroversion. Intrasubstance tearing of the labrum occurred in 75% of patients (mean tear size, 2.68 hours on acetabular clock face; mean location, 11.5 to 3 on acetabular clock face). There were significant improvements in the mean scores for all PROs: mHHS, 13.5 ± 17.7 points (P < .01); Non-Arthritic Hip Score, 14.3 ± 21.3 (P < .001); HOS-ADL, 11.6 ± 19.7 (P < .001); HOS-SSS, 17.1 ± 35.1 (P < .001); and visual analog scale, -2.77 ± 2.58 (P < .001). The mean patient satisfaction rating was 6.61. The improvements in mHHS, HOS-ADL, and HOS-SSS did not reach the minimal clinically important difference. The incidence of secondary procedures was 17% (4 patients underwent conversion to total hip arthroplasty and 2 required revision HA). CONCLUSIONS: HA in patients with global acetabular overcoverage was associated with improvements in PROs and pain at minimum 2-year follow-up. However, these improvements did not reach the minimal clinically important difference for the mHHS, HOS-ADL, and HOS-SSS. The incidence of secondary procedures was 17%. The pattern of labral injury is predominantly intrasubstance labral damage with a narrow rim of adjacent chondral injury. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
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