Functional electrostimulation therapy for vastus medialis decreases the varus thrust during gait.

Autor:	Shimada N; Division of Rehabilitation, Department of Clinical Support, Hiroshima University Hospital: 1-2-3 Kasumi, Minami-ku, Hiroshima-shi, Hiroshima 734-8553, Japan., Shimada M; Division of Rehabilitation, Department of Clinical Support, Hiroshima University Hospital: 1-2-3 Kasumi, Minami-ku, Hiroshima-shi, Hiroshima 734-8553, Japan., Toriyama M; Division of Sports Medical Center, Department of Clinical Support, Hiroshima University Hospital, Japan., Ishikawa M; Department of Orthopedic Surgery, Faculty of Medicine, Kagawa University, Japan., Hirata K; Division of Rehabilitation, Department of Clinical Support, Hiroshima University Hospital: 1-2-3 Kasumi, Minami-ku, Hiroshima-shi, Hiroshima 734-8553, Japan., Kono Y; Division of Rehabilitation, Department of Clinical Support, Hiroshima University Hospital: 1-2-3 Kasumi, Minami-ku, Hiroshima-shi, Hiroshima 734-8553, Japan., Ushio K; Department of Rehabilitation, Hiroshima University Hospital, Japan., Mikami Y; Department of Rehabilitation, Hiroshima University Hospital, Japan., Adachi N; Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan.
Jazyk:	angličtina
Zdroj:	Journal of physical therapy science [J Phys Ther Sci] 2024 Apr; Vol. 36 (4), pp. 190-194. Date of Electronic Publication: 2024 Apr 01.
DOI:	10.1589/jpts.36.196
Abstrakt:	[Purpose] This study aimed to investigate whether modification of vastus medialis activity can delay the varus thrust. [Participants and Methods] Ten participants (Kellgren-Laurence grades I: n=2, II: n=6, and III: n=2) diagnosed with knee osteoarthritis were enrolled. The intervention involved free walking on a 10-m walkway at any speed after donning a functional electrical stimulation set to contract the vastus medialis before heel contact. Using a Vicon Nexus ground reaction force meter and a wireless electromyograph DELSYS, varus thrust, maximal knee extension angle, maximal knee adduction moment, and vastus medialis onset time were assessed both before and after intervention. [Results] A significant difference in varus thrust was detected from before to after the intervention (2.7 ± 1.1° vs. 2.2 ± 1.3°). Both the vastus medialis activation time (-0.06 ± 0.09 vs. -0.21 ± 0.1) and the knee-joint extension angle (8.7 ± 5.1° vs. 5.5 ± 5.9°) decreased following intervention, whereas the knee adduction moment significantly increased (0.50 ± 0.20° vs 0.56 ± 0.18°). [Conclusion] Wearing the functional electrical stimulation set caused the vastus medialis to act earlier in response to heel strike, thereby improving the knee-joint extension angle and suppressing varus thrust. Competing Interests: None. (2024©by the Society of Physical Therapy Science. Published by IPEC Inc.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu