Abstract: Tibiae of 100 Chinese adults (50 males and 50 females) were used for this paper. The materials studied were unearthed from the vicinity of Xian.
The measurements taken in this paper are whole length, condylo-malleolar length, physiological length, proximal and distal epiphyseal breadths, sagittal diameter of the superior medial and the superior lateral articular surface, sagittal diameter of the distal epiphysis, anteroposterior diameter and transverse breadth at the level of nutrient foramen, min. circumference of the shaft and torsional angle. Their ant hropometries have been taken by Martin's method. The data of the measurements are listed in table 1.
Sex differences of the various linear measurements are very significant. Side difference of the torsional angle of tibia is very significant, however no sex difference for this angle.
The data of the various indices are listed in table 10. Sex difference of the caliber index is significant.
Racial and the regional differences have been discussed.

Key words: Tibia; Anthropometry; Xi'an