Fahrenbach G J, Kuehn D N, Tachdjian M O
J Pediatr Orthop. 1986 May-Jun;6(3):334-9. doi: 10.1097/01241398-198605000-00014.
Routine radiographic analysis does not visualize the posterior aspect of the hindfoot (posterior facet of the talocalcaneal joint). To help evaluate patients with persistent hindfoot abnormalities, computerized tomographic coronal sections in 22 clubfeet were studied. Seventeen feet (77.3%) had a lateral subluxation of the calcaneus. Of 14 feet with acceptable radiographic analysis, 12 (85.7%) had a lateral subluxation of the calcaneus. This study is evidence that a lateral subluxation of the calcaneus can exist, through a horizontal rotation, in the presence of acceptable radiographic analysis, reinforces the necessity for a posteromedial lateral release, and emphasizes that routine radiographic analysis should be supplemented with computerized tomography in evaluation of the resistant hindfoot deformity.
常规放射学分析无法显示后足的后侧部分（距跟关节后关节面）。为了帮助评估患有持续性后足异常的患者，对22例马蹄内翻足的计算机断层扫描冠状面进行了研究。17只足（77.3%）出现跟骨外侧半脱位。在14只放射学分析可接受的足中，12只（85.7%）出现跟骨外侧半脱位。本研究证明，在放射学分析可接受的情况下，跟骨可通过水平旋转出现外侧半脱位，这强化了后内侧外侧松解术的必要性，并强调在评估顽固性后足畸形时，常规放射学分析应辅以计算机断层扫描。
