Abstract
The lower limbs of 55 paediatric patients, with the diagnosis of hereditary motor sensory neuropathy (HMSN) referred to the Orthotics and Biomechanics Department of Hacettepe University, were assessed for appropriate orthotic intervention. Since in the natural history of HMSN symptoms and complaints are variable there is a wide range of interventions possible. The biomechanics of deforming forces and the consequential incidence of deformities in these 55 children, its orthotic implications and the efficacy of orthotic applications are discussed in detail.