Spontaneous resolution of focal fibrocartilaginous dysplasia of femur on long-term follow-up: case report and review of literature.

Focal fibrocartilaginous dysplasia (FFCD) is a rare developmental disorder frequently leading to angular deformities in young children. It most commonly affects the proximal tibia followed by distal femur. There are totally 22 reported cases of FFCD of femur. We report a case of FFCD of distal femur as a cause of varus deformity that was managed nonoperatively. The deformity resolved spontaneously over a period of 8 years. This is the second reported case of spontaneous resolution of angular deformity secondary to FFCD of distal femur. We strongly recommend to observe the behavior of deformity over a period of 24 months before any surgical intervention is planned.