A Comprehensive Study of the Anatomical Variations of the Posterolateral Tubercle of Talus

The aim of our study was to determine the prevalence and anatomical variations posterolateral tubercle talus in relation sex on CT imaging. A total 1478 ankle scans retrospectively reviewed for different variants talus, type size os trigonum. Normal sized lateral found 46.1 %, an enlarged (Stiedaâ??s process) 26.1 trigonum 20.5 % almost absent 7.3 %. statistically higher Stiedaâ??s process males while females (p<0.05). Among feet with trigonum, 25.7 were non-articulating identified as a separate bone located posterior 74.3% fused by synchondrosis or syndesmosis. Additionally, 17.5 associated intact tubercle, 53.5 considered part 29.0 without tubercle. According its size, 22.8 smaller than 0.5 cm, 55.4 between 1cm, 21.8 larger 1 cm. No significant differences types/sizes according gender (p>0.05). accessory ossicle, could vary morphologically. data this be helpful understanding clinical problems that some these variants.