Murayama Minoru, Aruga Kentaro, Kato Hiroto, Shinohara Tadayoshi, Nozaki Yuma, Hasegawa Hikaru, Hasegawa Mai
Niigata University of Health and Welfare: 1398 Shimamicho, Kita-ku, Niigata-shi, Niigata 950-3198, Japan.
J Phys Ther Sci. 2023 Aug;35(8):608-612. doi: 10.1589/jpts.35.608. Epub 2023 Aug 1.
[Purpose] To develop a knee joint for knee-ankle-foot orthoses that is easy to operate and allows for four levels of knee-flexion-movement adjustment, and to determine the effects of different flexion ranges of motion on knee flexion angle during gait. [Participants and Methods] Participants were eight healthy adults. Knee joint for knee-ankle-foot orthoses were made for each participant, and the knee flexion angle during gait was measured for each of the four knee joint settings: fixed in extension, 15° flexion range, 30° flexion range, and free flexion. [Results] Gait analysis showed that the knee flexion angle in the loading response phase was significantly greater in the 15° flexion range, 30° flexion range, and free-flexion settings than in the fixed-in-extension setting. While in the swing phase, the angle was greatest in the fixed setting, followed by the 15° flexion, 30° flexion, and free settings. [Conclusion] The proposed knee joint, when used in post-stroke gait practice using knee-ankle-foot orthoses, allows the gradual increase in the flexion range of motion of the joint as the weight-bearing capability of the lower limb improves, which would enable task-oriented practice similar to walking with ankle-foot orthoses as the next-stage target movement.
[目的] 开发一种用于膝踝足矫形器的膝关节，使其易于操作，并能进行四个级别的膝关节屈曲运动调整，同时确定不同屈曲运动范围对步态期间膝关节屈曲角度的影响。[参与者与方法] 参与者为八名健康成年人。为每位参与者制作膝踝足矫形器的膝关节，并针对四种膝关节设置测量步态期间的膝关节屈曲角度：伸直固定、15°屈曲范围、30°屈曲范围和自由屈曲。[结果] 步态分析表明，在负重反应阶段，15°屈曲范围、30°屈曲范围和自由屈曲设置下的膝关节屈曲角度显著大于伸直固定设置。而在摆动阶段，固定设置下的角度最大，其次是15°屈曲、30°屈曲和自由设置。[结论] 所提出的膝关节在使用膝踝足矫形器的中风后步态训练中使用时，随着下肢负重能力的提高，可使关节的屈曲运动范围逐渐增加，这将使类似于使用踝足矫形器行走的任务导向训练成为下一阶段的目标运动。
