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. 2022 Oct;30(10):3526-3534.
doi: 10.1007/s00167-022-06881-z. Epub 2022 Jan 31.

Acetabular labral tear is associated with high pelvic incidence with or without femoroacetabular impingement morphology

Hyuck Min Kwon  1 , Byung-Woo Cho  2 , Sungjun Kim  3 , Ick-Hwan Yang  2 , Kwan Kyu Park  2 , Nak-Hoon Son  4 , Woo-Suk Lee  5
Affiliations

Acetabular labral tear is associated with high pelvic incidence with or without femoroacetabular impingement morphology

Hyuck Min Kwon et al. Knee Surg Sports Traumatol Arthrosc. 2022 Oct.

Abstract

Purpose: The aim of this study was to investigate the association between pelvic sagittal parameters and acetabular labral tears.

Methods: Three-hundred and sixty-five patients (449 hips) who underwent magnetic resonance imaging (MRI) or magnetic resonance arthrogram (MRA) for hip pain were enrolled in this study. Pelvic sagittal parameters, including the pelvic incidence, pelvic tilt, and sacral slope, were measured with a standing lumbosacral lateral radiograph. All subjects were divided into two groups according to the presence or absence of radiologic acetabular labral tears and compared. Furthermore, the two groups were divided into subgroups according to whether femoroacetabular impingement (FAI) morphology was present or not and compared.

Results: Pelvic incidence was greater in the labral tear group than in the non-labral tear group (52.3° ± 8.2° versus 47.1° ± 6.8°, p < 0.001). After accounting for potentially confounding variables, we found that higher age (odds ratio 1.04, 95% confidence interval [CI] 1.02 to 1.06, p = 0.001), FAI (odds ratio 15.11, 95% CI 7.43 to 30.75, p < 0.001), and high pelvic incidence (odds ratio 1.13, 95% CI 1.09 to 1.17, p < 0.001) were independently associated with acetabular labral tear. When only the patients without FAI (308 hips) were divided into groups with and without acetabular labral tear, we found that higher age (odds ratio 1.03, 95% CI 1.01 to 1.06, p = 0.008) and high pelvic incidence (odds ratio 1.15, 95% CI 1.11 to 1.19, p < 0.001) were independently associated with acetabular labral tear.

Conclusion: Acetabular labral tear is associated with high pelvic incidence with or without FAI morphology.

Level of evidence: III.

Keywords: Acetabular labral tear; Femoroacetabular impingement; Pelvic incidence.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Flowchart of patient inclusion in the study
Fig. 2
Fig. 2
Pelvic sagittal parameters based on standing plain radiography
See this image and copyright information in PMC

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