Prevalence of Femoroacetabular Impingement Features in Japanese Young Adults without Symptoms: Hip Joint Morphology Using Radial Reformation from Computed Tomography
Hiroshima Journal of Medical Sciences Volume 67 Issue 4
Page 97-103
published_at 2018-12
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Title ( eng ) |
Prevalence of Femoroacetabular Impingement Features in Japanese Young Adults without Symptoms: Hip Joint Morphology Using Radial Reformation from Computed Tomography
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Creator |
Tanitame Keizo
Mitani Hidenori
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Source Title |
Hiroshima Journal of Medical Sciences
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Volume | 67 |
Issue | 4 |
Start Page | 97 |
End Page | 103 |
Journal Identifire |
[PISSN] 0018-2052
[EISSN] 2433-7668
[NCID] AA00664312
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Abstract |
Purpose: To determine the prevalence of femoroacetabular impingement (FAI) morphology in asymptomatic Japanese young adults using multi-detector computed tomography (MDCT) scan.
Materials and Methods: A total of 170 subjects (85 men; age, 19–39 years) without hip-related problems were included. Radial slices of 2-mm thickness at 30° intervals were reconstructed perpendicular to the central axis of the femoral head and neck for both hips. Alpha (α) angles, acetabular (AC) depths, and lateral centre-edge (LCE) angles were measured; maximum value of measured α angles was defined as max α angle, and minimum value of measured AC depths was defined as min AC depth. Max α angle > 55° was considered positive for cam-type FAI feature and min AC depth < 0 mm or LCE angle > 40° was considered positive for pincer-type FAI feature. Differences among planes, right-left correlations, and sex differences in FAI abnormalities were assessed. Results: The α angles at 1- and 2-o’clock positions in men and at 2-o’clock position in women were significantly greater than those at other positions. AC depths at 2-o’clock position were smallest in men and women. Max α angles and min AC depths and LCE angles showed strong right-left correlations. Max α angles and the numbers of hips with cam features were significantly higher in men than in women. The prevalence of pincer features was similar between men and women. Conclusion: The prevalence of cam type deformity is higher in men. Our results in Japanese populations were similar to those reported previously for Caucasians. |
Keywords |
Femoroacetabular impingement
Alpha angle
Acetabular depth
MDCT
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NDC |
Medical sciences [ 490 ]
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Language |
eng
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Resource Type | departmental bulletin paper |
Publisher |
Hiroshima University Medical Press
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Date of Issued | 2018-12 |
Rights |
Copyright (c) 2018 Hiroshima University Medical Press
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Publish Type | Version of Record |
Access Rights | open access |
Source Identifier |
[ISSN] 0018-2052
[ISSN] 2433-7668
[NCID] AA00664312
[DOI] 10.24811/hjms.67.4_97
[DOI] https://doi.org/10.24811/hjms.67.4_97
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