Dreeben S, Thomas P B, Noble P C, Tullos H S
Division of Orthopedic Surgery, Baylor College of Medicine, Houston, TX 77030.
Clin Orthop Relat Res. 1987 Nov(224):260-7.
A radiographic system has been developed that provides a standardized quantitative analysis of the forefoot. The patient stands fully weight-bearing on a horizontal plexiglass platform that is constructed to ensure reproducible placement between the cassette, patient, and beam. Measurements are made from the images of radiopaque rulers placed in line with the first metatarsophalangeal joint of each foot. The height of each metatarsal head can then be calculated based on measurements obtained on the radiograph. Graphs plotted from the data demonstrate the height of the metatarsal heads in a normal individual, changes in the height of the metatarsal heads with and without weight-bearing, before and after insole placement, and before and after metatarsal osteotomy. This information may be useful in obtaining a better understanding of abnormalities of the forefoot as related to bony anatomy and load distribution.
已经开发出一种放射成像系统，可对前足进行标准化定量分析。患者完全负重站立在水平有机玻璃平台上，该平台的构造可确保暗盒、患者和射线束之间的放置具有可重复性。测量是根据放置在每只脚第一跖趾关节线上的不透射线标尺的图像进行的。然后可以根据在X光片上获得的测量值计算每个跖骨头的高度。根据数据绘制的图表展示了正常个体中跖骨头的高度、负重和不负重情况下跖骨头高度的变化、鞋垫放置前后以及跖骨截骨术前和术后的情况。这些信息可能有助于更好地理解与骨骼解剖结构和负荷分布相关的前足异常情况。
