The treatments for elbow osteoarthritis that can’t be straightened include medication and surgery, and the appropriate treatment should be chosen according to the specific situation. 1. Medication: If you can’t straighten your elbow joint due to pain, you can take analgesics such as celecoxib, morphine, intra-articular injection of glucocorticosteroids such as prednisone, or sodium vitrate according to the doctor’s instruction. 2. Surgery: If the effect of medication is not obvious, restorative surgery or reconstructive surgery can be chosen according to the specific situation, which can not only reduce or eliminate the pain symptoms of the patients, but also improve the joint function and correct the deformity. It is recommended that people with elbow osteoarthritis who can’t extend straight go to regular hospitals in time and have standardized treatment under the guidance of doctors to avoid delaying the condition.