Examination of the Validity of Measurements of the Malleolar Torsion Angle

Abstract

[Purpose] The purpose of this study was to examine the validity of measurement of the malleolar torsion angle, which indicates the tibial torsion, by a goniometer. [Methods] We examined the correlation between the malleolar torsion angle obtained by a goniometer and the value obtained by a three dimensional motion analysis system. [Results] The malleolar torsion angle measured by the goniometer and the value obtained by the three-dimensional motion analysis system showed high correlations of 0.74 and 0.89 for ICC (2,1) and for ICC (3,1), respectively. [Conclusion] We confirmed high correlations between measurements obtained by a goniometer and a three dimensional motion analysis system. The present result suggests that measurement methods using a goniometer have a certain amount of validity in measurement of the malleolar torsion angle.