Hasenstein Todd, Meyr Andrew J
Resident, Temple University Hospital Podiatric Surgical Residency Program, Philadelphia, PA.
Clinical Associate Professor, Department of Podiatric Surgery, Temple University School of Podiatric Medicine, Philadelphia, PA.
J Foot Ankle Surg. 2019 Jan;58(1):66-74. doi: 10.1053/j.jfas.2018.08.009.
Although hallux abductovalgus (HAV) is widely considered to be a triplanar deformity involving the transverse, sagittal, and frontal planes, most of the published literature has focused on evaluating the deformity in only the transverse plane, and we are unaware of any investigation objectively evaluating the relationship among the 3 planes in the setting of HAV deformity. The objective of this investigation was to quantitatively evaluate radiographic measurement of the relationship between the transverse, sagittal, and frontal planes in the HAV deformity. Anteroposterior, lateral, and sesamoid axial radiographs from 42 consecutive feet were evaluated with measurement of the first intermetatarsal angle, hallux abductus angle, metatarsal sesamoid position, first metatarsal inclination angle, sesamoid rotation angle, and tibial sesamoid grade. Variables were graphically depicted against each other on frequency scatter plots with calculation of a regression line and Pearson's correlation coefficient. As transverse plane deformity increased, the frontal plane deformity also tended to increase and the first metatarsal inclination angle tended to decrease. And as frontal plane deformity increased, the first metatarsal inclination angle tended to decrease. To our knowledge, these are the first quantitative and objective data in support of a triplanar component to the HAV deformity, and we believe this reinforces the evaluation of this deformity with emphasis on all 3 planes.
尽管拇外翻（HAV）被广泛认为是一种涉及横轴面、矢状面和额状面的三维畸形，但大多数已发表的文献仅关注横轴面畸形的评估，我们尚未发现有任何研究客观评估HAV畸形情况下三个平面之间的关系。本研究的目的是定量评估HAV畸形中横轴面、矢状面和额状面之间关系的影像学测量。对42例连续足部的前后位、侧位和籽骨轴位X线片进行评估，测量第一跖骨间角、拇外展角、跖骨籽骨位置、第一跖骨倾斜角、籽骨旋转角和胫侧籽骨分级。在频率散点图上相互绘制变量，并计算回归线和皮尔逊相关系数。随着横轴面畸形增加，额状面畸形也趋于增加，第一跖骨倾斜角趋于减小。并且随着额状面畸形增加，第一跖骨倾斜角趋于减小。据我们所知，这些是支持HAV畸形三维组成部分的首批定量和客观数据，我们认为这加强了对该畸形的评估，并强调所有三个平面。
