What is protrusion of bone of side of child knee

If the child shows a hard mass on the outside of the knee joint like a bone protrusion, it may be an osteochondroma on the outside of the knee joint, or a disease of tenosynovial cyst, as follows: First, osteochondroma is a benign bone tumor disease, which generally occurs easily in adolescents and children. Most of it occurs in the dry end of the long tube of the limbs near the joint, and its base part grows on the bone cortex on one side to the surface of the bone. II. Tendon sheath cyst is the secondary symptom of chronic tenosynovitis. Tendon sheath cyst is due to the long course of disease, local wrapped cyst wall thickening, and hard texture. It looks like local bone protrusion from the appearance. It is recommended to go to the orthopedic clinic of regular hospital for treatment. After the examination and evaluation of the specific conditions of the hard mass by a specialist doctor, it can also be treated by surgical resection.