Subject-Specific Orientations of the Talocrural Joint Axes Estimated from the Morphology of the Talar Trochlea:

Foot & Ankle Orthopaedics

ShuheiNozaki¹ 

关键词: talus;    morphology;    radius of curvature;    talocrural joint;    axis orientation;    image analysis;   

DOI  :  10.1177/2473011416S00280

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:AnkleIntroduction/Purpose:The individual morphology variations in the talar trochlea influence subject-specific kinematics of the talocrural joint. In particular, it is suggested that the medial to lateral radius ratios of the anterior and posterior talar trochlea determine the orientations of the dorsiflexion and plantarflexion axes of the talocrural joint, respectively. However, the characteristics of the orientations of these axes of the talocrural joint have not been elucidated. The aims of this study were to assess the variations in the medial to lateral radius ratios of the anterior and posterior talar trochlea and to estimate the subject- specific orientations of the dorsiflexion and plantarflexion rotational axes of the talocrural joint.Methods:Computed tomography (CT) images of forty-nine unilateral adult human male tali were enrolled in this study. The three-dimensional bone models of the talus were reconstructed from the CT images. Four circles were fitted to medial and lateral edges o...

【 授权许可】

CC BY