Sensitivity of femoral orientation estimates to condylar surface and MR image plane location
Open Access
- 16 July 2004
- journal article
- research article
- Published by Wiley in Journal of Magnetic Resonance Imaging
- Vol. 20 (2), 300-305
- https://doi.org/10.1002/jmri.20106
Abstract
Purpose To define the femoral anatomic region that provides the most reliable reference for measuring femoral orientation, from which patellofemoral and tibiofemoral orientation can be measured. Materials and Methods After a three-dimensional image-based osteo-alignment procedure, two independent estimates of distal femoral orientation, the anterior (AFA) and posterior femoral angles (PFA), were acquired. These sets were comprised of 31 axial femoral orientation estimates each (obtained across a region 10 mm above to 20 mm below the patellar center) from 42 normal axial magnetic resonance (MR) image sets. An analysis of variance was conducted to determine the influence of image plane location, sex, and side on femoral orientation measures. Results The AFA presented greater variability across subjects (average SD = 3.13°) as compared to the PFA (average SD = 1.78°). There were significant differences in the AFA based on image plane location and sex. In contrast, no differences were found between sides, sexes, or image plane locations for the PFA. Conclusion In total, the posterior femoral condylar surface is more reliable than the anterior condylar surface for measuring femoral orientation and is best measured at least 8 mm below the patellar center. J. Magn. Reson. Imaging 2004;20:300–305. Published 2004 Wiley-Liss, Inc.Keywords
This publication has 19 references indexed in Scilit:
- Precise 3D skeletal kinematics using fast phase contrast magnetic resonance imagingJournal of Magnetic Resonance Imaging, 2003
- Anatomy of the epicondyles of the distal femurThe Journal of Arthroplasty, 2000
- Knee cartilage topography, thickness, and contact areas from MRI: in-vitro calibration and in-vivo measurementsOsteoarthritis and Cartilage, 1999
- Posterior tilting of the tibial component decreases femoral rollback in posterior‐substituting knee replacement: A computer simulation studyJournal of Orthopaedic Research, 1998
- Rotational Malalignment and Femoral Torsion in Osteoarthritic Knees With Patellofemoral Joint InvolvementPublished by Ovid Technologies (Wolters Kluwer Health) ,1994
- Patellofemoral Malalignment in AdolescentsThe American Journal of Sports Medicine, 1994
- The patello-femoral joint—a critical appraisal of its geometric assessment utilizing conventional axial radiography and computed arthro-tomographyThe British Journal of Radiology, 1993
- Radiographic patterns of osteoarthritis of the knee joint in the community: the importance of the patellofemoral joint.Annals Of The Rheumatic Diseases, 1992
- Medial subluxation of the patella as a complication of lateral retinacular releaseThe American Journal of Sports Medicine, 1988
- Computerized tomography of the patellofemoral joint before and after lateral release or realignmentArthroscopy: The Journal of Arthroscopic & Related Surgery, 1987