新徒手筋力検査法における股関節外転筋力3の問題点について

Manual Muscle Testing of Grade-III Hip Abductors

　背景：新徒手筋力検査法を用い骨盤固定の有無による股関節外転筋力3の外転可動域と代償動作として骨盤の傾きを調査した．

　対象と方法：健常成人女性67名と男性20名を対象とし，角度計を用いて骨盤固定時と非固定時について外転角と骨盤の傾きを計測した．

　結果：外転角は男女ともに約30°で，骨盤固定の有無に関わらず差がなかった．骨盤の傾きは，男性は骨盤固定時7.7°，非固定時8.2°で差はなかったが，女性は骨盤固定時9.5°，非固定時11.4°で有意差を認めた．

　まとめ：新徒手筋力検査法を用いて股間節外転筋力3を行う際は，可動域と女性は骨盤固定に留意する必要がある．

　Background：I measured both hip abduction angle to hold upper leg abduction against gravity and pelvic tilt angle in the presence and absence of pelvic fixation in lateral position.

　Subjects and Methods：The hip abduction angle and pelvic tilt angle of 87 healthy adults (20 males and 67 females) were measured with a goniometer in the presence and absence of pelvic fixation.

　Results：The mean abduction angle of both the males and the females was approximately 30 degrees, and there was no significant difference in between the groups according to whether the pelvis was fixed.　The mean pelvic tilt angle of the males was 7.7 degrees with pelvic fixation and 8.2 degrees without pelvic fixation and the difference was not significant.　By contrast, the mean pelvic tilt angle of the females was 9.5 degrees with pelvic fixation and 11.4 degrees without pelvic fixation, and it was significantly larger without pelvic fixation.

　Conclusion：When performing manual muscle testing of grade-III abductors, examiner should examine the strength of the hip abductor in the presence of pelvic fixation, particularly in females, as well as to range of motion.