Hip & pelvis

The Korean Hip Society (대한고관절학회)
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Treatment of Hip Microinstability with Arthroscopic Capsular Plication: A Retrospective Case Series

  • Tatiana Charles (Department of Orthopedic Surgery and Traumatology, Hopital Universitaire de Bruxelles Erasme) ;
  • Marc Jayankura (Department of Orthopedic Surgery and Traumatology, Hopital Universitaire de Bruxelles Erasme) ;
  • Frederic Laude (Hip and Pelvis Surgery, Clinique du Sport)
  • Received : 2022.09.29
  • Accepted : 2023.01.09
  • Published : 2023.03.31
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Abstract

Purpose: Hip microinstability is defined as hip pain with a snapping and/or blocking sensation accompanied by fine anatomical anomalies. Arthroscopic capsular plication has been proposed as a treatment modality for patients without major anatomic anomalies and after failure of properly administered conservative treatment. The purpose of this study was to determine the efficacy of this procedure and to evaluate potential predictors of poor outcome. Materials and Methods: A review of 26 capsular plications in 25 patients was conducted. The mean postoperative follow-up period for the remaining patients was 29 months. Analysis of data included demographic, radiological, and interventional data. Calculation of pre- and postoperative WOMAC (Western Ontario and McMaster Universities Osteoarthritis) index was performed. Pre- and postoperative sports activities and satisfaction were also documented. A P<0.05 was considered significant. Results: No major complications were identified in this series. The mean pre- and postoperative WOMAC scores were 62.6 and 24.2, respectively. The WOMAC index showed statistically significant postoperative improvement (P=0.0009). The mean satisfaction rate was 7.7/10. Four patients with persistent pain underwent a periacetabular osteotomy. A lateral center edge angle ≤21° was detected in all hips at presentation. We were not able to demonstrate any difference in postoperative evolution with regard to the presence of hip dysplasia (P>0.05), probably because the sample size was too small. Conclusion: Capsular plication can result in significant clinical and functional improvement in carefully selected cases of hip microinstability.

Keywords

Acknowledgement

A special thanks to Edgar Engelman, PhD, Anesthiology and reanimation, for his help with the statistical tests and interpretation of the results of those tests.

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