レーザーレンジセンサを用いた変形性膝関節症患者の歩行パラメータ解析

―膝関節痛が機能的移動能力に与える影響―

抄録

Laser range sensor-based timed up and go (laser-TUG) can evaluate performance in TUG subtasks (sit-to-walk [STW], walking short distance, and turning). This study characterized knee osteoarthritis (OA) patients’ (n = 165 patients; mean age, 68.6 [50–85] years; mean body mass index: 22.8 kg/m2, 70.3% female) laser-TUG subtask performance. Slowed STW time was clinical hallmarks associated with knee OA with severe knee pain. Furthermore, we performed mediation analysis and found that severe knee pain was acting on slowed STW time at least through lower sit-to-stand function. These functional constructs would not be fully captured by total timed score of existing functional measure; therefore, laser-TUG enables us to firstly clarify OA-related functional impairment. Close attention for these tasks might be a key to follow functional decline in knee OA patients who aggravate knee pain.