Talar dome detection and its geometric approximation in CT: Sphere, cylinder or bi-truncated cone?

The human ankle is a flexible structure with multiple movement abilities including internal/external rotation, dorsiflexion/plantar flexion and inversion/eversion (Koh et al., 2004). Orthopaedic ankle-related surgery is one of the widely-used treatments for osteochondral lesions of the talus whose aim is the reproduction of the physiological functions of ankle joint. This restoration is particularly important for ligaments tensioning (Leardini, 2001). The shapes of the implanted material should be compatible with the geometry of the ligamentous structures.
Source: Computerized Medical Imaging and Graphics - Category: Radiology Authors: Source Type: research