tailieunhanh - Báo cáo y học: "Changes in multi-segment foot biomechanics with a heat-mouldable semi-custom foot orthotic device"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Changes in multi-segment foot biomechanics with a heat-mouldable semi-custom foot orthotic device. | Ferber and Benson Journal of Foot and Ankle Research 2011 4 18 http content 4 1 18 JOURNAL OF FOOT AND ANKLE RESEARCH RESEARCH Open Access Changes in multi-segment foot biomechanics with a heat-mouldable semi-custom foot orthotic device Reed Ferber1 2 and Brittany Benson3t Abstract Background Semi-custom foot orthoses SCO are thought to be a cost-effective alternative to custom-made devices. However previous biomechanical research involving either custom or SCO has only focused on rearfoot biomechanics. The purpose of this study was therefore to determine changes in multi-segment foot biomechanics during shod walking with and without an SCO. We chose to investigate an SCO device that incorporates a heatmoulding process to further understand if the moulding process would significantly alter rearfoot midfoot or shank kinematics as compared to a no-orthotic condition. We hypothesized the SCO whether moulded or nonmoulded would reduce peak rearfoot eversion tibial internal rotation arch deformation and plantar fascia strain as compared to the no-orthoses condition. Methods Twenty participants had retroreflective markers placed on the right limb to represent forefoot midfoot rearfoot and shank segments. 3D kinematics were recorded using an 8-camera motion capture system while participants walked on a treadmill. Results Plantar fascia strain was reduced by 34 when participants walked in either the moulded or nonmoulded SCO condition compared to no-orthoses. However there were no significant differences in peak rearfoot eversion tibial internal rotation or medial longitudinal arch angles between any conditions. Conclusions A semi-custom moulded orthotic does not control rearfoot shank or arch deformation but does however reduce plantar fascia strain compared to walking without an orthoses. Heat-moulding the orthotic device does not have a measurable effect on any biomechanical variables compared to the non-moulded condition. These data may in part .