Decreased femoral head–neck offset: a possible risk factor for ACL injury View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2012-01-28

AUTHORS

Marc Philippon, Christopher Dewing, Karen Briggs, J. Richard Steadman

ABSTRACT

PURPOSE: Reduction in anterior cruciate ligament (ACL) injuries in young, active individuals continues to be a major goal in sports medicine. The purpose of this study was to determine the head-neck offset, as measured by AP pelvis alpha angles, in patients presenting to a single surgeon with isolated ACL and non-ACL knee injuries. METHODS: In a group of 48 patients with complete, primary ACL rupture and 42 controls with non-ACL injury (i.e., meniscus tear, cartilage defect), a single surgeon, blinded to the diagnosis, took radiographic measures of the AP alpha angle of both hips and the weight-bearing line at both knees. All knee pathology was confirmed with knee arthroscopy. Inclusion criteria included no previous hip or knee surgery, and long-leg standing alignment radiographic series completed at index visit. RESULTS: There was no difference in gender distribution, height, BMI or age between groups. ACL-injured patients had a significantly higher alpha angle (mean = 84, SD = 14) on the injured side than the controls (mean = 59, SD = 7, p < 0.0001). Ninety-four percent of the ACL-injured group had alpha angles over 60°, while only 35% of the non-ACL-injured group had alpha angles over 60° (p = 0.001). Those patients with alpha angle over 60° were 27 times more likely (95% CI 6.4-131) to be in the ACL injury group than those patients with alpha angle 60° or less (p = 0.001). CONCLUSION: Our findings establish an important preliminary correlation between ACL injury and diminished femoral head-neck offset, as characterized by abnormal, elevated alpha angles. LEVEL OF EVIDENCE: Prognostic study, Level III. More... »

PAGES

2585-2589

References to SciGraph publications

  • 2010-06-19. Radiographic findings in restrained hip joints associated with ACL rupture in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • 2007-05-12. Clinical presentation of femoroacetabular impingement in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s00167-012-1881-1

    DOI

    http://dx.doi.org/10.1007/s00167-012-1881-1

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1026901200

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/22286743


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