Data associated with 'Does Platycnemia Develop in Squatting Populations as a Response to Torsional Rotation Across the Subadult Growth Plate?' manuscript.

ABSTRACT<b>Objectives</b>: Platycnemia, a mediolateral flattening of the tibial shaft, has been argued to be an adult phenomenon caused by mechanical forces shaping bone. Here we investigate the possibility that this condition develops prior to growth plate closure, at a time when the epiphyseal cartilage is responsive to forces of torsion.<b>Materials and Methods</b>: Using two populations we analyze the degree of torsion along the tibial shaft, and compare that to the cnemic index, a measure commonly used to assign the degree of mediolateral flattening associated with platycnemia. Through multiple regression analysis we aimed to determine whether platycnemia, as measured by the cnemic index, is correlated with the level of torsion that the tibia undergoes during development, prior to growth plate closure.<b>Results</b>: Our results show that cnemic index significantly decreases as the tibia lengthens, resulting in increasing mediolateral flattening and greater instances of platycnemia. Unexpectedly, tibial torsion has no statistical relationship with the cnemic index.<b>Discussion</b>: Our findings suggest that a broader range of genetic, biomechanical, and environmental properties need to be considered when hypothesizing how cartilage modeling might be related to the development of platycnemia.