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首页> 外文期刊>Journal of orthopaedic research >Relationship between body mass index and activity in hip or knee arthroplasty patients.
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Relationship between body mass index and activity in hip or knee arthroplasty patients.

机译：髋关节或膝关节置换患者的体重指数与活动之间的关系。

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The weight of patients has not been demonstrated to have a consistent effect on the rate of polyethylene wear in clinical studies of total joint replacement. For this reason, we analyzed the relationship between quantitative activity, measured with a pedometer, and body mass index, a measure of obesity. Data were acquired for 209 individuals, 22-82 years of age; all were independent community walkers. One hundred and fifty-one had a well functioning total hip or knee replacement. Analysis of variance was used to evaluate the relationship between activity and body mass index, with adjustments for confounding variables. The 58 individuals with no total joint prosthesis averaged 7,781 steps per day, which was higher (p < 0.01) than those with a total hip (5,869 steps per day) or knee (4,597 steps per day) replacement. The subjects with no total joint prosthesis were, however, younger than the patients with a prosthesis (p < 0.01), and the body mass index of the patients with a total knee replacement was higher than that of the patients with a hip replacement and that of the subjects with no prosthesis (p < 0.01). After adjustment for differences in age, gender, and Charnley class, a higher body mass index (greater obesity) was associated with lower activity (p = 0.05). With regard to the rate of polyethylene wear, decreased ambulatory activity may counterbalance increased weight, which could, at least in part, explain why weight has not had a consistent effect on polyethylene wear in clinical studies. Wear is a function of use, not time. The effect of obesity on activity should be considered in radiographic studies of wear and other outcome assessments of total joint replacements.
机译：在全关节置换的临床研究中，尚未证明患者的体重对聚乙烯磨损率具有一致的影响。因此，我们分析了用计步器测量的定量活动与衡量肥胖的体重指数之间的关系。收集了209个人（22-82岁）的数据;都是独立的社区漫步者。 151位患者的髋关节或膝关节全部置换功能良好。方差分析用于评估活动与体重指数之间的关系，并对混杂变量进行调整。没有关节假体的58位患者平均每天进行7,781步，高于（p <0.01）髋关节置换术（每天5869步）或膝关节置换（每天4597步）。然而，没有全关节假体的受试者比具有假体的患者年轻（p <0.01），并且全膝关节置换患者的体重指数高于全髋关节置换患者。没有假体的受试者的比例（p <0.01）。在调整了年龄，性别和Charnley类别的差异后，较高的体重指数（肥胖率更高）与较低的活动能力相关（p = 0.05）。关于聚乙烯的磨损率，门诊活动的减少可能抵消体重的增加，这至少可以部分解释为什么体重在临床研究中对聚乙烯的磨损没有持续的影响。磨损是使用的功能，而不是时间。肥胖的影像学研究应考虑肥胖对活动的影响，以及其他评估全关节置换的结果。

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