使用未经校准的双平面x线摄影测量肩带周围的骨骼坐标

G.R. Johnson , T. Buxton , D. House , N. Bogduk
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引用次数: 4

摘要

肌肉骨骼系统的力学建模依赖于相关肌肉的骨附着物的信息;为了研究肩带的生物力学,作者对三具防腐尸体的肌肉附着物进行了鉴定。然后使用一种简单的双平面x线摄影技术,使用为每个骨骼定义的参考框架来确定附着坐标。考虑到可能的生物变异程度,该技术使用手定位而不需要特殊夹具,被认为是足够准确的。为了验证这一假设,通过测量x光片对中公共坐标的两次测量之间的一致性来研究该技术的准确性。结果表明,对于树干,在公共坐标上的误差总是小于自然变化;对于肩胛骨,它们的大小相似,但对于肱骨,测量误差经常超过肌肉附着物坐标的变化。结论是,一般来说,未经校准的双平面x线摄影对于确定肌肉附着物的空间坐标足够准确。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Use of uncalibrated biplanar radiography for the measurement of skeletal coordinates around the shoulder girdle

Mechanical modelling of the musculoskeletal system is dependent upon information regarding the bony attachments of the relevant muscles; in order to study the biomechanics of the shoulder girdle the authors have identified the muscle attachments in three embalmed cadavers. A simple biplanar radiographic technique was then used to determine the attachment coordinates using frames of reference defined for each bone. This technique, using hand positioning without special fixtures was believed to be sufficiently accurate, bearing in mind the likely degree of biological variation. In order to test this assumption, the accuracy of the technique has been studied by measuring the agreement between the two measurements of the common coordinate in the pairs of radiographs. it was found that for the trunk, the errors in the common coordinate were always less than the natural variation; for the scapula they were of a similar magnitude but, for the humerus, the measurement errors frequently exceeded the variation in the coordinates of muscle attachments. It was concluded that, in general, uncalibrated biplanar radiography was sufficiently accurate for the determination of the spatial coordinates of muscle attachments.

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