Tibiofemoral movement 3: full flexion in the living knee studied by MRIS. Nakagawa, MD, Orthopaedic Surgeon1; Y. Kadoya, MD, PhD, Lecturer1; S. Todo, MD, PhD, Research Fellow2; A. Kobayashi, MD, PhD, Assistant Professor1; H. Sakamoto, MD, PhD3; M. A. R. Freeman, MD, FRCS, Honorary Consultant Orthopaedic Surgeon4; and Y. Yamano, MD, PhD, Professor1
1 Department of Orthopaedic Surgery, Osaka City University Medical School, 1-4-3 Asahimachi Abeno-ku, Osaka City 545-5858, Japan. Correspondence should be sent to Dr Y. Kadoya or Mr M.A.R. Freeman. We studied active flexion from 90° to 133° and passive flexion to 162° using MRI in 20 unloaded knees in Japanese subjects. Flexion over this arc is accompanied by backward movement of the medial femoral condyle of 4.0 mm and by backward movement laterally of 15 mm, i.e., by internal rotation of the tibia. At 162° the lateral femoral condyle lies posterior to the tibia. This article has been cited by other articles:
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