EFFECT OF TIBIAL COMPONENT POSITION ON PATELLAR STRAIN FOLLOWING TOTAL KNEE ARTHROPLASTY

被引:42
作者
SINGERMAN, R
HEIPLE, KG
DAVY, DT
GOLDBERG, VM
机构
[1] Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, Ohio
[2] Department of Orthopaedics, Case Western Reserve University, Cleveland, Ohio
关键词
TOTAL KNEE ARTHROPLASTY; PATELLAR STRAIN; KNEE BIOMECHANICS; PATELLAR FRACTURE; KNEE PROTHESIS ALIGNMENT;
D O I
10.1016/S0883-5403(05)80210-4
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Patellar fracture following total knee arthroplasty has been related to component alignment and tibiofemoral joint-line position. The purpose of this study was to determine the effect of anteroposterior displacement of the tibial component and inferosuperior displacement of the tibiofemoral joint line on patellar strain following total knee arthroplasty with a cruciate-substituting design. Patellar strain increased (decreased) with anterior and inferior (posterior and superior) displacement. When averaged across all flexion angles, the strain changed approximately 1.7%/mm of anteroposterior displacement and 1.0%/mm of inferosuperior displacement. For individual specimens, changes in strain as high as 3.2%/mm of inferosuperior displacement of the joint line were seen. These changes in strain may be associated with changes in the patellofemoral contact force seen for similar changes in tibiofemoral joint-line position. These changes in strain may be a biomechanical indicator of the efficacy of retaining the preoperative position of the tibiofemoral joint line.
引用
收藏
页码:651 / 656
页数:6
相关论文
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