Saltzman C L, Brandser E A, Anderson C M, Berbaum K S, Brown T D
Department of Orthopaedic Surgery, University of Iowa, Iowa City, USA.
Foot Ankle Int. 1996 Mar;17(3):157-61. doi: 10.1177/107110079601700307.
A method for measuring first metatarsal rotation on weightbearing tangential radiographs is described. Under controlled conditions using cadaver specimens, 5 degree changes in first metatarsal rotation were associated with a mean change in radiographically measured rotation of 5.4 degrees (SD = 1.7 degrees). A clinical study of 30 hallux valgus and 30 control patients was undertaken to assess the reliability of the method of measurement. The overall reliability was high for both hallux valgus and control patients (r = 0.93 and 0.95, respectively). In these two groups, no significant difference was found between the mean values for first metatarsal rotation. Likewise, we found no correlation between first metatarsal rotation measured on tangential standing ("sesamoid" view) radiographs and the first metatarsophalangeal angle or the intermetatarsal 1-2 angle measured on anteroposterior standing radiographs.
本文描述了一种在负重切线位X线片上测量第一跖骨旋转的方法。在使用尸体标本的受控条件下，第一跖骨旋转5度的变化与X线测量旋转的平均变化5.4度（标准差=1.7度）相关。对30例拇外翻患者和30例对照患者进行了一项临床研究，以评估该测量方法的可靠性。拇外翻患者和对照患者的总体可靠性均较高（分别为r=0.93和0.95）。在这两组中，第一跖骨旋转的平均值之间未发现显著差异。同样，我们发现在站立切线位（“籽骨”位）X线片上测量的第一跖骨旋转与在站立前后位X线片上测量的第一跖趾关节角或第1-2跖骨间角之间没有相关性。
