Hootnick D, Boyd N A, Fixsen J A, Lloyd-Roberts G C
J Bone Joint Surg Br. 1977 Aug;59(3):267-71. doi: 10.1302/0301-620X.59B3.893503.
Forty-three patients with unilateral congenital short tibia with partial or complete absence of the fibula are reviewed. The factors influencing the degree of leg shortening at maturity are considered. Serial radiographic measurements of leg length in fourteen patients covering an average observation period of 9-3 years support the hypothesis that the relative difference in growth between the two limbs remains remarkably constant. By estimating the percentage difference between the normal and abnormal leg lengths on the first measurable radiograph it is therefore possible to predict the likely shortening at maturity. This method of prediction allows the surgeon to make the decision to proceed to Syme's amputation or to the use of an extension prosthesis at about one year of age when the child starts to walk.
回顾了43例单侧先天性胫骨短缩伴腓骨部分或完全缺如的患者。探讨了影响成年时下肢短缩程度的因素。对14例患者进行了系列腿部长度的X线测量，平均观察期为9.3年，这支持了以下假设：两下肢生长的相对差异保持显著恒定。因此，通过估计第一张可测量X线片上正常与异常腿长之间的百分比差异，就有可能预测成年时可能出现的短缩情况。这种预测方法使外科医生能够在患儿开始行走时约一岁左右决定是否进行Syme截肢术或使用延长假体。
