The mechanical stabilizing effect of nine different orthotic devices on physiological
and pathological plantar flexion/dorsal extension and horizontal rotation of the ankle
joint subjected to artificial lateral ligament lesions was investigated in 20 cadaveric
ankle joints under standardized conditions using an experimental appratus. All of
the braces tested significantly reduced plantar flexion/dorsal extension, as well
as internal/external/external horizontal rotation, under the experimental conditions.
In so far as these results can be transposed into a clinical setting, our data favour
that bracing significantly reduces the instability. But, other criteria, such as the
stabilizing effect on talar tilt and anterior drawer sign, the price and the convenience
of wearing such devices have to be taken into consideration when choosing the optimal
brace.
Ankle sprain - orthotic devices - mechanical ankle stability - plantar flexion - dorsal
extension - rotation
