We have located links that may give you full text access.
JOURNAL ARTICLE
VALIDATION STUDIES
[Epiphyseal distal torsion of the femur in osteoarthritic knees. A computed tomography study of 75 knees with medial arthrosis].
PURPOSE OF THE STUDY: We used computed tomography (CT) to measure external torsion of the distal femur preoperatively in patients with osteoarthritic knees presenting genu varum in order to assess the correlation between femoral distal external torsion (FDET) and radiological or epidemiological data obtained during the general preoperative work-up.
MATERIAL AND METHODS: Seventy-five knees were studied in 38 patients. Mean age was 70.4 years; there were 13 men and 25 women. The degree of external torsion of the distal femur was defined as the angle measured on the CT-scan between a line drawn tangent to the most posterior part of the condyles and the epidondylar line drawn from the lateral epicondyle to the most prominent point of the medial epicondyle. This angle was compared with the angle of the epiphyseal tibial varum measured on the anteroposterior radiograph and the overall deviation of the lower limb (HKA), and with the angle between the mechanical axis and the femoral shaft axis (HKS). We assessed the effect of gender and sex and looked for correlations between the FDET angle and measurements made on standard radiographs. Student's t test was used compare the FDET angle by sex and side. The alpha risk was set at 5%.
RESULTS: The FDET angle measured a mean 5.36 +/- 1.87 degrees (0-9 degrees ). We did not find any correlation between the FDET angle and tibial epiphyseal varum or HKS angles. A weak statistical correlation between the FDET and the HKA angles had no clinical value. Finally, the FDET angle was not correlated with sex or side.
DISCUSSION: Computed tomography provides reliable and reproducible measurements. Our work clearly demonstrated the wide interindividual variability of the FDET angle. We were unable to identify any measurement on standard radiographs allowing an indirect prediction of the FDET angle.
CONCLUSION: Our findings suggest that measuring the FDET angle on preoperative CT-scans in candidates for total hip arthroplasty can be useful for adapting the angle of rotation for the femoral component to each patient.
MATERIAL AND METHODS: Seventy-five knees were studied in 38 patients. Mean age was 70.4 years; there were 13 men and 25 women. The degree of external torsion of the distal femur was defined as the angle measured on the CT-scan between a line drawn tangent to the most posterior part of the condyles and the epidondylar line drawn from the lateral epicondyle to the most prominent point of the medial epicondyle. This angle was compared with the angle of the epiphyseal tibial varum measured on the anteroposterior radiograph and the overall deviation of the lower limb (HKA), and with the angle between the mechanical axis and the femoral shaft axis (HKS). We assessed the effect of gender and sex and looked for correlations between the FDET angle and measurements made on standard radiographs. Student's t test was used compare the FDET angle by sex and side. The alpha risk was set at 5%.
RESULTS: The FDET angle measured a mean 5.36 +/- 1.87 degrees (0-9 degrees ). We did not find any correlation between the FDET angle and tibial epiphyseal varum or HKS angles. A weak statistical correlation between the FDET and the HKA angles had no clinical value. Finally, the FDET angle was not correlated with sex or side.
DISCUSSION: Computed tomography provides reliable and reproducible measurements. Our work clearly demonstrated the wide interindividual variability of the FDET angle. We were unable to identify any measurement on standard radiographs allowing an indirect prediction of the FDET angle.
CONCLUSION: Our findings suggest that measuring the FDET angle on preoperative CT-scans in candidates for total hip arthroplasty can be useful for adapting the angle of rotation for the femoral component to each patient.
Full text links
Related Resources
Trending Papers
Heart failure with preserved ejection fraction: diagnosis, risk assessment, and treatment.Clinical Research in Cardiology : Official Journal of the German Cardiac Society 2024 April 12
Proximal versus distal diuretics in congestive heart failure.Nephrology, Dialysis, Transplantation 2024 Februrary 30
Efficacy and safety of pharmacotherapy in chronic insomnia: A review of clinical guidelines and case reports.Mental Health Clinician 2023 October
World Health Organization and International Consensus Classification of eosinophilic disorders: 2024 update on diagnosis, risk stratification, and management.American Journal of Hematology 2024 March 30
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app