Purpose
To compare short-term follow-up outcomes after primary arthroscopy in femoroacetabular
impingement syndrome (FAIS) patients with untreated central acetabular osteophytes
(CAO) to a control group without CAO.
Methods
A retrospective analysis was performed using data from FAIS patients who had primary
arthroscopy between 2017 and 2018. The presence of CAO was confirmed arthroscopically,
and there were 2 groups created. The CAO group was 1:1 propensity-score matched to
a control group (without CAO) based on age, gender, body mass index (BMI), Tӧnnis
grade, symptom duration before surgery, and follow-up time. Patient-reported outcomes
(PROs), such as the Hip Outcome Score-Activities of Daily Living (HOS-ADL), International
Hip Outcome Tool 12-component form (iHOT-12)，modified Harris Hip Score (mHHS), and
visual analog scale (VAS) scores were used to evaluate the level of function included.
The minimal clinically important difference (MCID) and patient acceptable symptomatic
state (PASS) were also calculated to determine meaningful outcome improvement. Radiographic
measures, performed procedures, complications, and revision surgery were also compared
and analyzed for both groups. P values less than .05 were considered statistically significant.
Results
A total of 46 hips with CAO and 46 hips without CAO were propensity matched. At the
minimum final follow-up of 2 years, the CAO group had significantly lower HOS-ADL
(78.8 vs 85.5; P = .008), iHOT-12 (74.8 vs 79.3; P = .019), and mHHS (78.9 vs 87.2; P = .002) scores, as compared to the CAO group. Furthermore, patients in the CAO group
were significantly less likely to achieve the MCID and PASS for the mHHS score (78.3%
vs 93.5%; P = .036, 58.7% vs 78.2%; P = .043, respectively). There was no change in the rate of complications (4.3% vs
0%) and revision hip arthroscopy (4.3% vs 2.2%) between the two groups at the final
follow-up.
Conclusions
This study demonstrated that surgically treated FAIS patients with CAO might experience
worse short-term, patient-reported outcomes, as compared with propensity-matched patients
without CAO.
Level of Evidence
III, case-control study.
Key Words
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Article info
Publication history
Published online: February 11, 2022
Accepted:
January 30,
2022
Received:
August 28,
2021
Footnotes
See commentary on page 2449
The authors report the following potential conflicts of interest or sources of funding: This work was supported by grants from the National Natural Science Foundation of China (Grants 82072403, 81902205, and 81871761). The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article. Full ICMJE author disclosure forms are available for this article online, as supplementary material.
Xin Zhang and Jian-Quan Wang contributed equally to this article.
F.Y. and H.-J.H. contributed equally to this article.
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© 2022 by the Arthroscopy Association of North America
