Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio
Introduction. The goal of this study was to research the association of femoral bumps and herniation pits with the overlap-ratio of the cross-over sign. Methods. Pelvic X-rays and CT-scans of 2925 patients with good assessment of the anterior and the posterior acetabular wall and absence of neutral...
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Wiley
2014-01-01
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| Series: | Advances in Orthopedics |
| Online Access: | http://dx.doi.org/10.1155/2014/432728 |
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| author | Max J. Scheyerer Carol E. Copeland Jeffrey Stromberg Thomas Ruckstuhl Clément M. L. Werner |
| author_facet | Max J. Scheyerer Carol E. Copeland Jeffrey Stromberg Thomas Ruckstuhl Clément M. L. Werner |
| author_sort | Max J. Scheyerer |
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| description | Introduction. The goal of this study was to research the association of femoral bumps and herniation pits with the overlap-ratio of the cross-over sign. Methods. Pelvic X-rays and CT-scans of 2925 patients with good assessment of the anterior and the posterior acetabular wall and absence of neutral pelvic tilt were enrolled in the investigation. Finally pelvic X-rays were assessed for the presence of a positive cross-over sign, and CT-scans for a femoral bump or a herniation pit. Additionally, if a positive cross-over sign was discovered, the overlap-ratio was calculated. Results. A femoral bump was found in 53.3% (n=1559), and a herniation pit in 27.2% (n=796) of all hips. The overlap-ratio correlated positively with the presence of a femoral bump, while a negative correlation between the overlap-ratio and the presence of a herniation pit was found. The latter was significantly more often combined with a femoral bump than without. Conclusions. We detected an increased prevalence of femoral bump with increasing overlap-ratios of the cross-over sign indicating a relation to biomechanical stress. The observed decreased prevalence of herniation pits with increasing overlap-ratios could be explained by reduced mechanical stress due to nontightened iliofemoral ligament in the presence of retroversion of the acetabulum. |
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| id | doaj-art-7f4698d2da104375bdac874882f53831 |
| institution | Kabale University |
| issn | 2090-3464 2090-3472 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Orthopedics |
| spelling | doaj-art-7f4698d2da104375bdac874882f538312025-02-03T01:09:35ZengWileyAdvances in Orthopedics2090-34642090-34722014-01-01201410.1155/2014/432728432728Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over RatioMax J. Scheyerer0Carol E. Copeland1Jeffrey Stromberg2Thomas Ruckstuhl3Clément M. L. Werner4Department of Surgery, Division of Trauma Surgery, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, SwitzerlandR Adams Cowley Shock Trauma Center, University of Maryland Medical Systems, 22 S. Greene Street, Baltimore, MD 21201, USAR Adams Cowley Shock Trauma Center, University of Maryland Medical Systems, 22 S. Greene Street, Baltimore, MD 21201, USADepartment of Surgery, Division of Trauma Surgery, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, SwitzerlandDepartment of Surgery, Division of Trauma Surgery, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, SwitzerlandIntroduction. The goal of this study was to research the association of femoral bumps and herniation pits with the overlap-ratio of the cross-over sign. Methods. Pelvic X-rays and CT-scans of 2925 patients with good assessment of the anterior and the posterior acetabular wall and absence of neutral pelvic tilt were enrolled in the investigation. Finally pelvic X-rays were assessed for the presence of a positive cross-over sign, and CT-scans for a femoral bump or a herniation pit. Additionally, if a positive cross-over sign was discovered, the overlap-ratio was calculated. Results. A femoral bump was found in 53.3% (n=1559), and a herniation pit in 27.2% (n=796) of all hips. The overlap-ratio correlated positively with the presence of a femoral bump, while a negative correlation between the overlap-ratio and the presence of a herniation pit was found. The latter was significantly more often combined with a femoral bump than without. Conclusions. We detected an increased prevalence of femoral bump with increasing overlap-ratios of the cross-over sign indicating a relation to biomechanical stress. The observed decreased prevalence of herniation pits with increasing overlap-ratios could be explained by reduced mechanical stress due to nontightened iliofemoral ligament in the presence of retroversion of the acetabulum.http://dx.doi.org/10.1155/2014/432728 |
| spellingShingle | Max J. Scheyerer Carol E. Copeland Jeffrey Stromberg Thomas Ruckstuhl Clément M. L. Werner Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio Advances in Orthopedics |
| title | Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio |
| title_full | Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio |
| title_fullStr | Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio |
| title_full_unstemmed | Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio |
| title_short | Radiographic Markers of Femoroacetabular Impingement: Correlation of Herniation Pit and Femoral Bump with a Positive Cross-Over Ratio |
| title_sort | radiographic markers of femoroacetabular impingement correlation of herniation pit and femoral bump with a positive cross over ratio |
| url | http://dx.doi.org/10.1155/2014/432728 |
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