A simple mathematical standardized measurement of acetabulum anteversion after total hip arthroplasty

Chen Kun Liaw, Rong Sen Yang, Sheng Mou Hou, Tai Yin Wu, Chiou Shann Fuh

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

We invented a standardization method to measure the cup's anteversion after total hip arthroplasty without the influence of patient's position. We measured 68 radiographs of 10 patients after total hip replacement (THR) and calculated the error of each measurement, defined as the difference with the average of the same measuring method on the same patient. We also calculated the repeatability standard deviation (RSD) of each method according to the American Society for Testing and Materials, ASTM E691. Mean absolute inter-examination angle error, defined as the average of the absolute deviations, was 0.75° for standardized anteversion (range 0.03-2.51°), as compared with those without standardization, 2.30° (range 0.04-13.04°). The inter-examination measurement reliability (precision), defined as one RSD, was 0.99° for standardized anteversion, as compared with those without standarization, 3.50°. There is no difference between patients four and five without (p = 0.097). There is a significant difference with standardization (p < 0.0001). Our study demonstrated that this mathematical method is a precise tool to measure the anteversion of the acetabular cup. We hope that it can be used widely in the future.
原文英語
頁(從 - 到)105-119
頁數15
期刊Computational and Mathematical Methods in Medicine
9
發行號2
DOIs
出版狀態已發佈 - 六月 1 2008
對外發佈

ASJC Scopus subject areas

  • 建模與模擬
  • 生物化學、遺傳與分子生物學 (全部)
  • 免疫學與微生物學 (全部)
  • 應用數學

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