The Influence of Femoral Anteversion on Hip Flexion Angle under Pelvic Fixation

Abstract

[Purpose] The purpose of this study was to clarify the influence of femoral anteversion on hip flexion angle under pelvic fixation. [Subjects and Methods] Informed consent to participation in this study was obtained from 62 young adults: 31 males and 31 females. Femoral anteversion was measured using Craig’s test, and male and female subjects were each classified separately into normal, anteversion, or retroversion groups. In addition, range of motion of hip flexion, hip internal rotation, and external rotation in the supine posture, and range of motion of hip internal rotation and external rotation in the prone posture were measured under pelvic fixation. [Results] Significant differences in hip flexion angle were observed between the anteversion group and the retroversion group in both male and female subjects, and the greater femoral anteversion was, the greater the hip flexion angle was. [Conclusion] This study revealed that femoral anteversion influences the hip flexion angle under pelvic fixation.