Tibial rotation is an important aspect of knee function and can be altered after total knee arthroplasty (TKA). These alterations include decreased internal rotation with knee flexion as compared to the normal state and paradoxical external rotation with flexion. Mobile bearing total knee prostheses may allow greater unconstrained tibial rotation. I compared tibial rotation after fixed bearing or mobile bearing total knee arthroplasty in 82 patients who underwent TKA with the tibia cut first technique to ascertain any differences. Using intraoperative imageless computer navigation, measurements included the determination of tibial rotation from extension to 90 degrees flexion before and after prosthetic implantation with non-weight-bearing range of motion. I found that tibial rotation was significantly reduced after fixed bearing total knee replacement as compared to mobile bearing. In addition, the tibial position compared to the distal femur in extension was more external in fixed bearings compared to mobile bearings. Placing the fixed tibial tray with increased internal rotation could explain this difference.
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http://dx.doi.org/10.1007/s00264-008-0562-7 | DOI Listing |
J Clin Orthop Trauma
February 2025
Orthopaedic and Trauma Surgery Department, Hospital de Alta Complejidad Cuenca Alta, RP6 Km 92.5 PC 1814, Cañuelas, Buenos Aires, Argentina.
Introduction: Aseptic recalcitrant nonunion (ARNU) of the femur and tibia is an entity in which the absence of bony union, misalignment, and limb length discrepancies (LLD) coexist. Currently, the management of these cases lacks consensus. This study aimed to describe the bone union rate and deformity correction outcomes in patients with ARNU of the femur or tibia treated with the Induced Membrane Technique (IMT).
View Article and Find Full Text PDFOrthop J Sports Med
January 2025
Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.
Background: Tibiofemoral rotation is an emerging parameter, especially in assessing patellofemoral instability. However, reference values in the literature are inconsistent regarding the used imaging modality and do not consider the effect of knee flexion during image acquisition.
Purpose: To analyze the differences in tibiofemoral rotation measurements between computed tomography (CT) and magnetic resonance imaging (MRI).
Arch Orthop Trauma Surg
January 2025
Department of Orthopedic Surgery, Suez Canal University Hospital, Kilo 4.5 Ring Road, Ismailia, 41111, Egypt.
Introduction: As a result of increased incidence of anterior cruciate ligament (ACL) injury in young athletes, there is a rise in the indications surgical ACL reconstruction procedures. The value of anterolateral ligament (ALL) reconstruction emerges as a proposed solution to prevent graft failures and improve stability in this high demanding category of patients. The purpose of this study is to present our experience with a novel hamstring auto-grafting technique, the single antegrade sling graft (SASG), for combined reconstruction of both ACL and ALL using autologous gracilis (GR) and semitendinosus (ST) grafts utilizing a single femoral tunnel and double tibial tunnels.
View Article and Find Full Text PDFJ Orthop Surg Res
January 2025
Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
Purpose: Previous studies reported that anterior knee pain (AKP) occurs with an incidence of 32% after opening-wedge high tibial osteotomy (OWHTO). However, the biomechanical effects of this procedure on patellofemoral joints (PFJs) remain unclear. We aimed to quantify the changes in the kinematics and cartilage conditions of the PFJ during stair climbing before and after OWHTO.
View Article and Find Full Text PDFJ Am Acad Orthop Surg Glob Res Rev
January 2025
From the Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo, Tokyo (Dr. Kono, Dr. Taketomi, Dr. Kage, Dr. Inui, and Dr. Tanaka); the Department of Information Systems, Faculty of Engineering, Saitama Institute of Technology, Fukaya, Saitama (Dr. Yamazaki); the Department of Orthopedic Biomaterial Science, Osaka University Graduate School of Medicine, Suita, Osaka (Dr. Tamaki, and Dr. Tomita); the Department of Orthopedic Surgery, Saitama Medical University, Saitama Medical Center, Kawagoe, Saitama (Dr. Inui); and the Department of Health Science, Graduate School of Health Science, Morinomiya University of Medical Sciences, Suminoe, Osaka, Japan (Dr. Tomita).
Background: The effect of axial rotation between the femoral neck and ankle joint (total rotation [TR]) on normal knees is unknown. Therefore, this study aimed to investigate the TR effect on normal knee kinematics.
Methods: Volunteers were divided into groups large (L), intermediate (I), and small (S), using hierarchical cluster analysis based on TR in the standing position.
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