Kinematic analysis of a posterior cruciate retaining mobile-bearing total knee arthroplasty

Using video fluoroscopy, 10 subjects having a mobile-bearing posterior cruciate-retaining total knee arthroplasty were analyzed to determine their in vivo kinematic patterns. Under weight-bearing conditions, while in extension, the average contact position was posterior to the mid-tibia sagittal pla...

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Bibliographic Details
Published inThe Journal of arthroplasty Vol. 18; no. 8; pp. 1029 - 1037
Main Authors Oakeshott, Roger, Stiehl, James B, Komistek, Richard A, Anderson, Dylan T, Haas, Brian D
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.12.2003
Subjects
Biomechanical Phenomena
cruciate retention
Humans
kinematics
knee
Knee Prosthesis
mobile bearing
Prosthesis Design
Rotation
knee
kinematics
cruciate retention
mobile bearing
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Summary:Using video fluoroscopy, 10 subjects having a mobile-bearing posterior cruciate-retaining total knee arthroplasty were analyzed to determine their in vivo kinematic patterns. Under weight-bearing conditions, while in extension, the average contact position was posterior to the mid-tibia sagittal plane with posterior translation of both condyles to 60° of flexion, followed by anterior translation to 120° of flexion. Under non-weight-bearing conditions, the average condylar contact positions were significantly more anterior from full extension to 90° of knee flexion ( P=.01). The average range of motion was 129° under non-weight-bearing conditions and 119° during weight-bearing. Although subjects in this study exhibited variable motion patterns, they are accommodated by the unconstrained optimized articulation of this highly conforming mobile-bearing implant.
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ISSN:0883-5403
1532-8406
DOI:10.1016/S0883-5403(03)00369-3