Article

According to literature, little is known regarding the effects of
orthotic management of flatfoot on kinetics of vertical jump. OBJECTIVES: To
compare the kinetic and temporal events of two-legged vertical jumping take-off
from a force plate for heading a ball in normal and flexible flatfoot subjects
with and without insole.
STUDY DESIGN: A functional based interventional
controlled study. METHODS: Random sampling method was employed to draw a control
group of 15 normal foot subjects to a group of 15 flatfoot subjects. A force
platform was used to record kinetics of two-legged vertical jump shots. RESULTS:
Results indicate that insole did not lead to a significant effect on kinetics
regarding anterior-posterior and mediolateral directions (p > 0.05). Results of
kinetics related to vertical direction for maximum force due to take-off and
stance duration revealed significant differences between the normal and flexible
flatfoot subjects without insole (p < 0.05) and no significant differences
between the normal foot and flexible flatfoot subjects with insole adoption (p >
0.05). CONCLUSIONS: These results suggest that the use of an insole in the
flexible flatfoot subjects led to improved stance time and decrease of magnitude
of kinetics regarding vertical direction at take-off as the main feature of
two-legged vertical jumping function. CLINICAL RELEVANCE: Adoption of the insole
improved the design of the shoe-foot interface support for the flexible flatfoot
athletes, enabling them to develop more effective take-off kinetics for vertical
jumping in terms of ground reaction force and stance duration similar to that of
normal foot subjects without insole.
CI - (c) The International Society for Prosthetics and Orthotics 2013.
- Semelle - pied plat - football

Langue : ANGLAIS