The effect of activity levels of total hip arthroplasty patients on socket penetration
The effect of activity levels of total hip arthroplasty patients on socket penetration
复制标题
DOI：
10.1054/arth.2001.23566
复制
发表时间：
2001-08-01
影响因子：
3.5
通讯作者：
Lane, JM
中科院分区：
文献类型：
--
作者：
Goldsmith, AAJ;Dowson, D;Lane, JM
全髋关节置换术（THA）的生存率与股骨头穿透聚乙烯髋臼杯和聚乙烯磨损有关。THA患者的活动水平被认为是影响磨损的所有重要因素，本研究的目的是探讨计步器记录的活动与髋臼杯穿透之间的关系。另一篇文章[1]讨论了正常受试者和不同年龄THA患者的日常活动水平的测量。受试者在2至4周的时间内使用简单的计步器装置连续监测。患者（n = 54;来自Wrightington医院髋关节手术中心的平均年龄58岁的患者，其穿刺数据也可获得。患者组的平均活动水平为每个髋关节每年142.6万次载荷循环。比较了54例患者81个髋关节的放射学穿透测量值，平均随访时间为13.1年（范围：1.3-26.4年）。然而，已知穿透与植入期的总体相关性较差，并且当穿透与新参数（不仅考虑了植入物寿命，还考虑了活动水平和患者体重）作图时，没有显著改善。随着植入时间的增加，观察到渗透水平的显著分散性增加，这表明在聚乙烯磨损的多因素问题中，其他因素，特别是股骨头表面光洁度或聚乙烯劣化，可能占主导地位。
Survivorship of total hip arthroplasties (THAs) has been linked to penetration of the femoral head into the polyethylene acetabular cup and to polyethylene wear. The activity level of patients with THAs is considered to be all important factor affecting wear, and the purpose of this study was to explore the relationship between activity as recorded by pedometers and cup penetration. The measurement of daily activity levels of normal subjects and THA patients of various ages are discussed in another article [1]. Subjects were monitored continuously during 2- to 4-week periods using simple pedometer devices. Patients (n = 54; mean age, 58 years) from the Centre for Hip Surgery at Wrightington Hospital for whom (lie penetration data also were available were included in the study. The average activity level for the patient group was 1.426 million loading cycles on each hip joint per year. Radiographic penetration measurements were compared for 81 hips in 54 patients with a mean follow-up of 13.1 years (range, 1.3-26.4 years). The overall correlation of penetration with implantation period is known to be poor, however, and did not improve significantly when the penetration was plotted against a new parameter that took account of not only implant life, but also the level of activity and patient weight. The considerable scatter of penetration levels was noted to increase with increasing implantation period, which indicates that in the multifactorial problem of polyethylene wear, other factors, particularly femoral head surface finish or polyethylene deterioration, may predominate.