OCD lesions are osteochondral lesions of the foot and ankle. They are cartilage injuries which are somewhat challenging to treat due to their nature that once damaged, cartilage cannot be regenerated. OCD lesions often manifest as deep pain in the ankle, and there may be clicking and crepitus in the ankle joint. Ankle bracing may be custom for OCD lesions, and physical therapy may help. Surgical options depending on the lesion size include microfracturing during an ankle arthroscopy, which means drilling small holes in the lesion to bring more blood flow to the lesion.