What are the clinical manifestations of osteochondromatosis of the tibial tuberosity? The disease is common in active boys aged 12-14 years, and is mostly unilateral. There is often a history of recent participation in strenuous exercise. Clinically characterized by the gradual appearance of pain in the tibial tuberosity, lumps, pain and activity have a clear relationship; ② examination: tibial tuberosity obvious bulging, local hardness, heavy pressure pain, no skin inflammation. The pain increases when making knee extension resistance movements; ③ X-ray film shows that the tibial tuberosity epiphysis is enlarged, dense or fragmented, and the surrounding soft tissues are swollen. How to treat osteochondrosis of tibial tuberosity? After the age of 18 years, the symptoms of this disease will disappear on their own after the ossification of the tibial tuberosity and the upper end of the tibia, but the local augmentation will not change. Until the age of 18, the symptoms resolve themselves by reducing strenuous knee activity. In cases of significant pain, physical therapy or short-term braking of the knee can be used. Painkillers are usually not necessary, and local corticosteroid injections are not recommended because they are not effective when injected subcutaneously and are difficult to inject in the epiphysis. Occasionally, symptoms persist in adulthood when a small fragmented epiphysis has not fused with the tibial tuberosity, in which case drilling or bone grafting may be performed to facilitate fusion.