The chondroma is about 2-3 cm long and is located on the medial side of the upper tibia, right at the location of the tibial tendon. The reason for the “noose” is that the location of the chondroma is just “in the way” of the tendon extension activity, but the noose does not appear in normal walking, but only in very “tricky” fixed movements. I have a few questions: (1) A chondroid tumor that long must not have grown in a year or two, so does the fact that the symptoms are appearing now mean that the chondroid tumor is growing again? Does the continued growth mean that the chondrosarcoma is progressing towards malignancy (2) How much does it cost to treat? (3) Will it recur after surgical removal. (Image description: A bony protrusion is visible on the right proximal tibia, growing dorsally toward the knee joint, the bone cortex and osteophyte of the bony protrusion are connected to the bone cortex and osteophyte of the backbone, the bone structure of the knee joint is intact, the anatomical relationship is normal, the joint surface is smooth, the joint space is not narrowed, opinion: osteochondroma of the right proximal tibia) Doctor: (1) It is not necessarily a growth (2) The malignancy rate of a single osteochondroma is very low. rate is very low, and continued growth does not mean malignancy (3) If strangulation occurs, surgery is still recommended (4) The cost is less than 10,000 yuan (5) The recurrence rate is very low.