Significance of asymmetrical posteromedial and posterolateral femoral condylar chamfer cuts in total knee arthroplasty

Purpose Orthopedic surgeons remove more bone from the posteromedial femoral condyle than the posterolateral condyle to achieve the desired femoral component rotation. Here, the correlation between the asymmetry of chamfer cuts and femoral component rotation in total knee arthroplasty was determined....

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2014-12, Vol.22 (12), p.2989-2994
Main Authors: Gungor, Harun R., Ok, Nusret, Agladioglu, Kadir, Akkaya, Semih, Kiter, Esat
Format: Article
Language:English
Subjects:
Adult
Arthroplasty, Replacement, Knee - methods
Asymmetry
Female
Femur - surgery
Humans
Joint replacement surgery
Knee
Knee Joint - surgery
Magnetic Resonance Imaging
Male
Medicine
Medicine & Public Health
Models, Theoretical
Orthopedics
Patients
Retrospective Studies
Rotation
Surgeons
Young Adult
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Summary:Purpose Orthopedic surgeons remove more bone from the posteromedial femoral condyle than the posterolateral condyle to achieve the desired femoral component rotation. Here, the correlation between the asymmetry of chamfer cuts and femoral component rotation in total knee arthroplasty was determined. Methods A model was built to simulate anterior chamfer cuts performed during total knee arthroplasty to measure posterior condylar offset. Right knee axial magnetic resonance imaging slices were examined from 280 consecutive patients (142 men, 138 women; mean age 31.4 ± 6.6 years). The anatomic and surgical transepicondylar axes, as well as the posterior condylar joint line, were drawn. Differences in the posteromedial and posterolateral offsets and the femoral rotation angles relative to the posterior joint line were measured. Results The mean surgical femoral rotation angle was 4.8° ± 1.2°, and the mean posterior condylar offset difference was 4.4 ± 1 mm, with a strong correlation ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-014-3342-5