The Influence of Rocker Bar Ankle Foot Orthosis on Gait in Patients with Chronic Hemiplegia
J Stroke Cerebrovasc Dis. 25(8):2078-82
Farzad Farmani, PhD, Mohammad-Ali Mohseni-Bandpei, PhD, Mahmood Bahramizadeh, PhD, Gholamreza Aminian, PhD, Ali Abdoli, MD, Mohammad Sadeghi-Goghari, PhD
This study aimed to evaluate the effect of rocker bar ankle foot orthosis (RAFO) on the
spatiotemporal characteristics of gait in chronic hemiplegic patients compared with the
effect of solid ankle foot orthosis (SAFO).
Following ethical approval, 18 patients with chronic hemiplegia, at least 6 months post stroke,
were investigated in barefoot condition, with SAFO and RAFO in random sequences. Their
spatiotemporal characteristics were examined by 2 force platforms and a Vicon motion analysis
There were significant changes in spatiotemporal outcome measures between barefoot condition
and using SAFO and RAFO (P < .05). Compared with SAFO, RAFO resulted in significantly more step
length, faster gait velocity, and less preswing time (P < .05), although no significant differences were
seen regarding step width and cadence (P > .05). Furthermore, RAFO led to significant increases in
hip extension and knee flexion at toe-off, whereas SAFO did not change these parameters (P < .05).
Findings of the present study showed that RAFO further improves gait abilities in chronic hemiplegic
patients compared with SAFO, which could be due to the positive effect of added rocker bar on
push-off function during the late stance phase of gait.
Rocker bar ankle foot orthosis, gait, patients, hemiplegia