Purpose
The purposes of our study were 1) to investigate the potential change of labral size
after arthroscopic repair and 2) to analyze the relationship between acetabular labral
size and functional outcomes.
Methods
In this retrospective study, patients diagnosed with labral tear and undergoing hip
arthroscopic repair in our institution between September 2016 and December 2018 were
included. Magnetic resonance imaging was obtained preoperatively and postoperatively,
and the labral length and labral height were measured in three anatomic sites: 11:30,
1:30, and 3:00 positions. All patients completed at least 2-year follow-up. Patients
whose preoperative labral size in any position wider than 2 standard deviation away
from the mean were identified as the hypertrophic labrum group and were compared with
the control in radiographic variables and patient-reported outcomes (PROs), including
the visual analog scale (VAS), modified Harris Hip Score (mHHS), the International
Hip Outcome Tool-12 (iHOT-12) and the Hip Outcome Score-Activities of Daily Living
(HOS-ADL).
Results
A total of 82 patients (82 hips) were included, and the mean follow-up period was
39.54 ± 8.48 months. Significant improvement in PROs was determined before and after
surgeries. Twelve patients were identified with labral hypertrophy and had higher
postoperative mHHS scores, higher postoperative iHOT-12 scores, and greater improvement
in HOS-ADL compared with the control group. Patients with larger preoperative anterosuperior
labral height exhibited more favorable clinical outcomes. Meanwhile, no significantly
morphologic change in labral size was determined.
Conclusion
There is no significantly morphologic change in labral size of superior, anterosuperior,
and anterior labrum after arthroscopic repair. Patients with hypertrophic labrum achieved
more favorable clinical outcomes compared with those with normal-sized labrum.
Level of Evidence
Level III, retrospective comparative prognostic trial.
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Article info
Publication history
Published online: January 05, 2023
Accepted:
December 13,
2022
Received:
August 16,
2022
Publication stage
In Press Journal Pre-ProofFootnotes
The authors report the following potential conflicts of interest or sources of funding: The work was supported by Beijing Natural Science Foundation (no.Z200003) and Key Clinical Project of Peking University Third Hospital (no. BYSYZD2019003). Full ICMJE author disclosure forms are available for this article online, as supplementary material.
Identification
Copyright
© 2022 by the Arthroscopy Association of North America
