Purpose
To evaluate the clinical outcomes of hip arthroscopy for femoroacetabular impingement
syndrome (FAIS) and their predictors at a minimum 5 years’ follow-up.
Methods
We retrospectively analyzed patients with FAIS after first-time unilateral hip arthroscopy
between January 2010 and July 2016. Patient-reported outcomes (PROs) included the
validated modified Harries Hip Score (mHHS) and Visual Analog Scale for Pain (Pain
VAS). We included patients with Tönnis grade 0 or 1 and reported PROs, and excluded
patients with previous hip diseases or bilateral symptoms. Bivariate and multivariate
analyses were used for data analysis.
Results
We included 159 patients with a mean follow-up of 6.4 years, aged 36.18 ± 8.61 years,
41.5% female, and a mean body mass index of 23.61 ± 3.45. The mean postoperative mHHS
was 88.82 ± 11.60, and the mean Pain VAS was 1.93 ± 1.89, significantly better than
before surgery (P < .001). Postoperative alpha angle (P = .003) and lateral center edge angle (P < .001) were significantly decreased. Most patients (83.7%) achieved clinically important
improvement based on patient-acceptable symptom state and minimal clinically important
difference (MCID). The overall revision surgery rate was 2.5%. There were no conversions
to total hip arthroplasty. Bivariate analysis indicated that age (P < .001), preoperative mHHS (P = .002), and postoperative Pain VAS (P <.001) correlated with postoperative mHHS at a minimum 5 years’ follow-up. Multivariate
regression analysis of MCID showed that age (P <.001), preoperative PROs (P < .01 for both), and postoperative Pain VAS (P < .001) were significant outcome predictors.
Conclusion
Patients with FAIS after first-time unilateral hip arthroscopy showed significant
improvement in PROs at mid-term follow-up, with a low revision surgery rate. Young
patients and those with low postoperative Pain VAS showed excellent outcomes at a
minimum 5 years’ follow-up.
Level of Evidence
Level IV, retrospective case series.
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Article Info
Publication History
Published online: March 30, 2022
Accepted:
March 18,
2022
Received:
November 4,
2021
Publication stage
In Press Journal Pre-ProofFootnotes
X.Z. and J-Q.W. contributed equally to this article.
The authors report the following potential conflicts of interest or sources of funding: Supported by the Natural Science Foundation of China (Grant Nos. 82072403, 81871761, 81902205 ), Beijing Municipal Natural Science Foundation (Grant No. 7192221 ). Full ICMJE author disclosure forms are available for this article online, as supplementary material.
Identification
Copyright
© 2022 by the Arthroscopy Association of North America
