Dysplasia occurs when there is abnormal growth in the cells of the body, possibly leading to cancer if left untreated. In the foot, dysplasia affects the bones and joints.
Most cases are diagnosed as Monostotic Fibrous Dysplasia, in which a single bone is involved. This type of dysplasia results in benign bone growths that deform the bone, inflame surrounding joints and soft tissues, and can make one more susceptible to fractures. A less common diagnosis would be Palmoplantar Ectodermal dysplasia, which is a complex set of conditions that may manifest in deformity of the feet, notably on the skin and nails.
Treatment varies by diagnosis and severity.