The bulging of the second joint of the finger may be caused by tenosynovitis, synovial chondrosarcoma, endogenous chondrosarcoma of bone, etc., which can be treated by medication or surgery.
1. Tenosynovitis: it can be caused by finger injury, overstrain, osteoarthritis, etc. It can be caused by the symptoms of large and bulging second joint of finger and pain, which can be treated with non-steroidal drugs such as ibuprofen, diclofenac sodium, etc., or local injections such as dexamethasone, and surgical treatment if necessary.
2. Synovial chondroma: mostly caused by osteoarthritis, osteochondral fracture, neurotrophic abnormality, etc. It can grow lumps in joints, which can be manifested as swelling, coarseness, pain of finger joints and restriction of joint activities, etc. The main treatment is complete surgical resection, but there is a possibility of recurrence.
3. Bone endochondroma: it manifests as swelling and deformity of finger bones, usually without obvious pain symptoms, and the main treatment method is surgical excision.
If the second joint of the finger is thick and bulging, it is recommended to go to the hospital in time for a clear diagnosis and appropriate treatment.