AI Article Synopsis
- The study aimed to explore the relationship between femoral bumps and herniation pits in relation to the overlap-ratio of the cross-over sign in pelvic X-rays and CT-scans of 2925 patients.
- Findings indicated that 53.3% of hips had femoral bumps while 27.2% had herniation pits, with a positive correlation between femoral bumps and the overlap-ratio, but a negative one with herniation pits.
- The research concluded that higher overlap-ratios related to increased femoral bumps may indicate greater biomechanical stress, while fewer herniation pits suggest reduced mechanical stress when the iliofemoral ligament is not tight in cases of acetabular retroversion.
Article Abstract
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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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4022160 | PMC |
| http://dx.doi.org/10.1155/2014/432728 | DOI Listing |
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