We describe a five-year-old child with neurofibromatosis type I who developed a Charcot knee. Infiltration of the joint by tissue associated with the disease caused damage to the proprioceptive mechanism and resulted in severe joint instability, accelerated destruction and development of neuropathic arthropathy

Purpose. The incidence of relapses could be occur in sever clubfeet deformities whether treated surgically or non surgically. In this study, we evaluate the results of correction of residual and recurrent congenital clubfoot with soft tissue distraction or osteotomy techniques using Ilizarov external fixation. Methods. This study included 35 feet in 28 patients were treated between 1999 to 2007. 16 feet in thirteen patients with an average age 13.7 (range from 11–29 years) were treated with percutaneous calcaneal V steotomy and gradual correction by Ilizarov method. 19 feet in fifteen patients with an average age 10.5 (range from 4–22 years) were treated with distraction of joints through soft tissue with Ilizarov technique. The mean average follow up period was 5.6 years ranged from (1–8 years). Results. At the time of fixator removal, a plantigrade foot was achieved in 30 feet. Mild residual varus and equines deformities were in 5 feet. At the last follow foot pressure measurement shows recurrent or residual deformity in ten feet (7 treated with bone osteotomy technique and 3 treated with soft tissue distraction technique). Conclusion. We thought that recurrence may be occurred in both techniques this depends on many factor like the bone morphology, number of the pervious operations and the degree of stiffness of the foot prior the operation