Age and sex-related distribution of alpha angles and the prevalence of the cam morphology of the hip in Asians do not differ from those of other ethnicities

Age and sex-related distribution of alpha angles and the prevalence of the cam morphology of the... Purpose This study was performed to evaluate the effects of age on the alpha angle and the incidence of asymptomatic cam morphology. Methods The radiographs of asymptomatic individuals between ages 8 and 22 were retrospectively collected. A total of 1417 individuals were included and grouped according to age: 8–12 (Group A), 13–18 (Group B), and 19–22 (Group C) years. Radiographic measurements of the alpha angles of the right hip were obtained from anteroposterior (AP) and frog-leg lateral (FL) radiographs. The correlations among alpha angles, the presence of cam morphology, and age were determined. Results The mean alpha angles of the three groups were statistically different (p < 0.001, each). The alpha angles on both radiographs were positively correlated with age. Intra-group analysis revealed that this correlation was only evident on the FL images of males in Group B. The presence of a radiographic cam morphology also positively correlated with age (p < 0.001 in both AP and FL images). The cam morphology on AP radiographs was 0 in Group A, 17(3.0%) in Group B, and 21(4.8%) in Group C; that on FL radiographs was 2(0.3%) in Group A, 45(7.9%) in Group B, and 103(23.6%) in Group C. Intra-group analysis http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Knee Surgery, Sports Traumatology, Arthroscopy Springer Journals

Age and sex-related distribution of alpha angles and the prevalence of the cam morphology of the hip in Asians do not differ from those of other ethnicities

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA)
Subject
Medicine & Public Health; Orthopedics
ISSN
0942-2056
eISSN
1433-7347
D.O.I.
10.1007/s00167-018-4980-9
Publisher site
See Article on Publisher Site

Abstract

Purpose This study was performed to evaluate the effects of age on the alpha angle and the incidence of asymptomatic cam morphology. Methods The radiographs of asymptomatic individuals between ages 8 and 22 were retrospectively collected. A total of 1417 individuals were included and grouped according to age: 8–12 (Group A), 13–18 (Group B), and 19–22 (Group C) years. Radiographic measurements of the alpha angles of the right hip were obtained from anteroposterior (AP) and frog-leg lateral (FL) radiographs. The correlations among alpha angles, the presence of cam morphology, and age were determined. Results The mean alpha angles of the three groups were statistically different (p < 0.001, each). The alpha angles on both radiographs were positively correlated with age. Intra-group analysis revealed that this correlation was only evident on the FL images of males in Group B. The presence of a radiographic cam morphology also positively correlated with age (p < 0.001 in both AP and FL images). The cam morphology on AP radiographs was 0 in Group A, 17(3.0%) in Group B, and 21(4.8%) in Group C; that on FL radiographs was 2(0.3%) in Group A, 45(7.9%) in Group B, and 103(23.6%) in Group C. Intra-group analysis

Journal

Knee Surgery, Sports Traumatology, ArthroscopySpringer Journals

Published: Jun 6, 2018

References

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