Ollier’s disease, also known as enchondromatosis, is a rare, congenital skeletal disorder in which abnormal cartilage growth in bone leads to the formation of benign tumors called enchondromas. Though usually present at birth, it may not be diagnosed until later in childhood when limb growth abnormalities are observed. Podiatrists usually see enchondromatosis in the metatarsal and phalange bones of the forefoot. In this area, enchondromas can develop easily, thinning out the outer layer of cortical bone and making it more susceptible to fracture.
While enchondromas start out as benign, they may become cancerous in as enchondromatosis advances. However, treatment is generally unnecessary unless bone tissue is destroyed by fast-growing tumors, which can be addressed through surgical removal.