Bone bump pain below the knee can be caused by tibial tuberculosis, arthritis, bone tumor, etc. General treatment, medication, surgery, etc. are feasible. 1. Tibial tuberculosis: In adolescents, the tibial tubercle is excessively raised, and there may be localized tenderness, and the pain may be aggravated by the increase of resistance when extending the knee joint. Treatment requires local braking, reduce local activities, moderate exercise can wear patellar belt to reduce local pressure, but also follow the doctor’s prescription oral anti-inflammatory drugs such as celecoxib analgesic treatment. 2. Arthritis: Osteoarthritis, osteomalacia, and the formation of bone capillaries at the edge of the joints in the elderly may cause the bone below the knee to bulge and pain. Attention should be paid to the protection of knee joints, oral ibuprofen and other painkillers and sodium glucosamine and other nutritive articular cartilage drugs, local hot compresses, acupuncture and other treatments are feasible, and in severe cases, surgical treatment such as knee replacement is feasible. 3. Bone tumors: Bone tumors occur in the knee joint, which can appear localized bony bumps, accompanied by pressure and pain and other symptoms. After the occurrence of bone tumor, you need to consult a doctor in time to clarify your condition, and actively carry out radiotherapy and joint replacement treatment, and in serious condition, you may need to carry out amputation surgery if you can’t keep your knee. If the condition is serious and the knee cannot be preserved, amputation may be needed. When the bone below the knee bulges and hurts, it is necessary to consult a doctor in a timely manner, and the specialist will clarify the condition and then actively carry out appropriate treatment, which will help to relieve the pain and other uncomfortable symptoms as soon as possible.