Lack of Axial Rotation in Mobile-bearing Knee Designs
نویسندگان
چکیده
منابع مشابه
Comparison of Wear in Fixed and Mobile Bearing Knee Designs
Ultra High Molecular Weight Polyethylene (UHMWPE) remains the only bearing surface of choice in total knee replacements (TKR). While excellent medium term results can be found for knee replacements at ten years, there remains concerns about wear debris induced osteolysis in the longer term, particularly in young and more active patients. It has been shown previously that the wear of fixed beari...
متن کاملClassification of mobile-bearing knee designs: mobility and constraint.
Restoration of normal knee joint function through surgical reconstruction is dependent upon load sharing between the implant and surrounding soft tissue structures. Mobile bearing knee designs offer the advantage of maximum conformal geometry while diminishing constraint forces to fi xation interfaces through plateau mobility. The degree of mobility afforded by these designs in the anterior-pos...
متن کاملMobile-bearing Total Knee Prostheses Reduce Axial Rotational Constraint Torque
INTRODUCTION: The current study compared in-vitro tibiofemoral axial rotational constraint between 2 posterior stabilized mobile-bearing knee prosthesis and their fixed-bearing counterparts. It was demonstrated that both mobile-bearing knees induced significantly less constraint torque compared to their fixed-bearing counterparts. Highly-constrained design of the fixed-bearing knees substantial...
متن کاملTibiofemoral movement 4: changes of axial tibial rotation caused by forced rotation at the weight-bearing knee studied by RSA.
We studied the knees of 11 volunteers using RSA during a step-up exercise requiring extension while weight-bearing from 50 degrees to 0 degrees. The findings on weight-bearing flexion with and without external rotation of the tibia based on MRI were confirmed.
متن کاملComparison of Mobile-Bearing and Fixed-Bearing Designs in High Flexion Total Knee Arthroplasty: Using a Navigation System
PURPOSE We compared and analyzed the short term results of high flexion total knee arthroplasty (TKA) with mobile-bearing and fixed bearing designs. MATERIALS AND METHODS We studied 32 patients that had undergone TKA with LPS-Flex Mobile and 34 patients with LPS-Flex Fixed using an electromagnetic navigation system between January 2010 and June 2010, and were followed up for at least 1 year. ...
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ژورنال
عنوان ژورنال: Clinical Orthopaedics & Related Research
سال: 2008
ISSN: 0009-921X
DOI: 10.1007/s11999-008-0354-9