Adult acetabulo – pelvic parameters in Turkish society: A descriptive radiological study

Aydın, Murat; Kırçıl, Cihan; Polat, Onur; Arıkan, Murat; Erdemli, Bülent

doi:10.1016/j.aott.2016.02.001

Cited by 2 publications

(1 citation statement)

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“…Both may be a common reason for early-onset hip osteoarthritis. [ 1 - 3 ] However, such anatomical findings are also reported to be relevant among asymptomatic people, or the contralateral asymptomatic side might have similar findings on radiographs compared to the symptomatic side in patients with the impingement. [ 4 - 6 ]…”

Section: Introductionmentioning

confidence: 99%

Labral tears with axial plane disorders

et al. 2020

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Femoroacetabular impingement (FAI) leads to a disruption of the chondrolabral junction and/or labral tears with two main mechanisms; cam type impingement on the aspherical femoral head-neck junction abutting against the acetabulum or pincer type with excessive acetabular coverage, leading to labral tears or fraying. Both may be a common reason for early-onset hip osteoarthritis. [1-3] However, such anatomical findings are also reported to be relevant among asymptomatic people, or the contralateral asymptomatic side might have similar findings on radiographs compared to the symptomatic side in patients with the impingement. [4-6] Recently, it was reported that patients with acetabular retroversion had developed hip pain earlier than the patients with acetabular anteversion (AA) regardless of the severity of the dysplasia. Acetabular retroverted hips had normal anterior axial plane coverage as well as deficient posterior coverage. Authors argued against the traditional belief that the development of secondary osteoarthritis due to labral tears or cartilage degeneration appears to be less affected by posterior dysplasia than anterior dysplasia and that posterior acetabular coverage particularly seems to play a role in the development of osteoarthritis. [7,8] Supporting this, Hapa et al. [9] reported axial plane posterior Objectives: This study aims to determine if there is an axial plane coverage insufficiency in patients with symptomatic labral tears compared to the contralateral asymptomatic side and healthy control subjects. Patients and methods: This retrospective study was conducted between December 2017 and January 2019. Thirty patients (21 males, 9 females; mean age 28 years; range, 20 to 36 years) operated due to unilateral symptomatic acetabular labral tears secondary to femoroacetabular impingement were evaluated. Twenty asymptomatic patients (13 males, 7 females; mean age 27±9 years; range, 19 to 36 years) were included in the control group. The relationship between acetabular morphology and labral tear was investigated with the comparison of unilateral symptomatic hips with contralateral asymptomatic hips and the control group by using radiological parameters on plain radiographs and computed tomography. Results: When the patient group symptomatic side was compared to the control group, acetabular anteversion angle (AAA) and alpha (a) angle were higher, while posterior acetabular sector angle and horizontal acetabular sector angle were lower. When the asymptomatic side was compared to the control group, AAA was higher in the patient group. There was no difference between the symptomatic and asymptomatic sides in the patient group; the symptomatic side yielded a higher a angle. Conclusion: Posterior axial plane coverage deficiency in combination with cam deformity (increased a angle) seems to play a role in the pathogenesis of symptomatic acetabular labral tears, even creating a side-to-side difference in some individuals.

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Section: Introductionmentioning

confidence: 99%