Abstract: The articular angles of calcanean tubercles were measured and calculated in 282 cases of the Chinese adults (males 164, females 118) by using the ·method of measurement and calculation of the sliding caliper according to principles of trigonometry. The mean values of the right and left sides are 27.53°+0.91° and 27.55°±0.87° in males and 32.22°±l.46°and 34.70°±1.25° in females respectively. There is no evident difference between the left and right sides, but there is marked difference between the males and the females (P<0.01). This method is easier to use than goniometry.

Key words: Calcaneus; Articular angle for calcanean tubercle