The effect of orthotics on plantar pressure in children with infantile tibia vara (Blount's disease)

Albeit some studies have revealed the effectiveness of the orthosis use in infantile tibia vara (ITV), hitherto no study has shown the effects of these orthosis on plantar pressures. This study aims to reveals the effects of orthosis on plantar pressure in infantile tibia vara. Fourteen children (mean age: 27.14 ± 5.00 months) with infantile tibia vara made up the study group and 14 healthy children (mean age: 26.42 ± 5.33 months) constituted the control group. The plantar pressure distribution was evaluated with WALKINSENSE. ITV group was evaluated before and after orthosis. The control group did not use orthosis and was evaluated once. After orthosis, it was determined that lateral foot pressure decreased, and medial foot pressure increased in the hindfoot. After orthosis, medial pressure decreased in the forefoot (p < 0.05). The pressure in the forefoot of the control group was significantly higher than that in the ITV group (before and after orthosis) (p < 0.05). After orthosis, the pressure was similar in the posterior and mid-foot sensors between the ITV group and the control group (p˃0.05). The orthosis can be effective in achieving the normalization of the soles pressure distribution in children with ITV.