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Periacetabular osteotomy after failed hip arthroscopy demonstrates improved outcomes in a heterogenous patient population: a systematic review

Knee Surgery, Sports Traumatology, Arthroscopy (2022)Cite this article

Abstract

Purpose

To evaluate the literature on patients undergoing periacetabular osteotomy after failed hip arthroscopy (PAO-FHA) for (1) patient demographics and hip morphology, (2) changes in preoperative to postoperative patient-reported outcomes (PROs), and (3) PROs in comparison to primary periacetabular osteotomy (PAO) patients.

Methods

A systematic literature search of Pubmed, CINAHL/Medline, and cochrane databases was performed in accordance with PRISMA guidelines. The search phrase was “(periacetabular osteotomy or PAO or rotational osteotomy) and (hip arthroscopy or arthroscopic)”. The titles, abstracts, and full texts were screened for studies on PAO-FHA. Study quality was assessed, and relevant data were collected. A meta-analysis was not performed due to study heterogeneity.

Results

The search identified 7 studies, including 151 hips (148 patients, 93.9% female) undergoing PAO-FHA, out of an initial 593 studies, with three Level IV and four Level III studies. Mean time from hip arthroscopy to PAO ranged from 17.0 to 29.6 months. Heterogenous hip morphologies and radiologic findings prior to PAO were observed, though patients most frequently demonstrated moderate-to-severe dysplasia (mean or median lateral center edge angle < 20°) and minimal osteoarthritis (Tönnis grade 0 or 1). In all 5 studies that reported concomitant procedures with PAO, femoral and/or acetabular osteoplasty was performed via arthroscopy or arthrotomy. Following PAO-FHA, radiographic acetabular coverage and PROs improved in all 6 studies that reported postoperative outcomes. All four comparative studies of primary PAO vs. PAO-FHA included patients with mean or median LCEAs < 20°, reporting mixed outcomes for the optimal treatment approach.

Conclusion

PAO-FHA is reported in a heterogenous patient population that frequently includes hips with moderate-to-severe dysplasia and minimal osteoarthritis. Regardless of hip morphology or concomitant procedures, all studies that reported postoperative outcomes demonstrated improved PROs following PAO-FHA.

Level of evidence

Level IV.

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Authors and Affiliations

  1. Department of Orthopedic Surgery, University of Pittsburgh Medical Center, 3471 Fifth Avenue, Pittsburgh, PA, 15213, USA

    Andrew J. Curley, Ian D. Engler, Ethan R. Ruh, Craig S. Mauro & Michael P. McClincy

  2. American Hip Institute, Chicago, IL, USA

    Andrew J. Curley

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  1. Andrew J. Curley
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  2. Ian D. Engler
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  3. Ethan R. Ruh
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Correspondence to Andrew J. Curley.

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The authors report the following disclosures: CSM - consultant (Arthrex), MPM - royalties (Elizur, LLC). The remaining authors report no disclosures.

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Institutional review board approval was not required for this review study.

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Curley, A.J., Engler, I.D., Ruh, E.R. et al. Periacetabular osteotomy after failed hip arthroscopy demonstrates improved outcomes in a heterogenous patient population: a systematic review. Knee Surg Sports Traumatol Arthrosc (2022). https://doi.org/10.1007/s00167-022-07108-x

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  • DOI: https://doi.org/10.1007/s00167-022-07108-x

Keywords

  • Hip/pelvis/thigh
  • Dysplasia
  • Instability
  • Femoroacetabular impingement
  • Hip arthroscopy
  • Periacetabular osteotomy