The treatment for medial chondroma of the proximal tibia is surgical excision. A proximal medial tibial chondroma, also known as an exophytic osteochondroma, is a developmental deformity formed during the growth of bone and cartilage. It is a benign lesion, usually a slow-growing, painless, hard mass around a joint. Not all proximal medial tibial chondrosarcomas need to be removed, there are the following that may require surgical removal: 1. To cause painful discomfort and dysfunction of the knee joint. 2. To correct a knee deformity or to prevent one from occurring. 3. The mass more seriously affects the appearance of the knee joint. 4. To suspect the tendency of malignant transformation. Proximal medial tibial chondrosarcoma should go to the regular hospital in time, and the doctor should judge the specific condition according to the symptoms, signs and auxiliary examination, and give the correct treatment for the condition.