Publication date: Available online 8 November 2017 Source: Foot and Ankle Surgery Author(s): Luigi Manzi, Jorge Hugo Villafañe, Cristian Indino, Jacopo Tamini, Pedro Berjano, Federico Giuseppe Usuelli Background The purpose of this study was to investigate the test–retest reliability of the Phi angle in patients undergoing total ankle replacement (TAR) for end stage ankle osteoarthritis (OA) to assess the rotational alignment of the talar component. Methods Retrospective observational cross-sectional study of prospectively collected data. Post-operative anteroposterior radiographs of the foot of 170 patients who underwent TAR for the ankle OA were evaluated
See more here:
Reliability of the Phi angle to assess rotational alignment of the talar component in total ankle replacement