Influence of the tibial stem design on bone density after cemented total knee arthroplasty: a prospective seven-year follow-up study

被引：0

作者：

Daniel Hernandez-Vaquero

Manuel A. Garcia-Sandoval

Jose M. Fernandez-Carreira

Richard Gava

机构：

[1] School of Medicine,

[2] University of Oviedo,undefined

[3] Department of Orthopaedic Surgery,undefined

[4] Hospital San Agustin,undefined

[5] Clinical Research Unit,undefined

[6] Hospital San Agustin,undefined

来源：

International Orthopaedics | 2008年 / 32卷

关键词：

Bone Mineral Density; Total Knee Arthroplasty; Tibial Component; Bone Mineral Density Change; Bone Mineral Density Decrease;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We prospectively measured the changes in bone mineral density (BMD) in the proximal tibia of 20 total knee arthroplasties, ten with cruciform stems and ten with cylindrical stems. The measurements were made one, four and seven years after surgery. We observed a uniform density decrease in three regions of interest from one to seven years of follow-up. Cylindrical stems showed an asymmetrical density decrease between the three regions of interest, with no change in the central region, a slight decrease in the lateral region, and large decrease in the medial region. Multivariate analysis with general linear model showed the stem type factor as statistically significant for medial region of interest (p = 0.006). The cylindrical stem produces heterogeneous BMD changes under the tibial platform in knee arthroplasties, and this could be a potential risk factor for asymmetrical subsidence of this component.

引用

页码：47 / 51

页数：4

共 61 条

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