How to treat tendinitis and synovitis? Generally, the current approach is to first start with conservative treatments for tendinitis and synovitis. Conservative treatments include acupuncture, massage, physical therapy, topical ointments, and oral medications, all of which can help alleviate the symptoms of tendinitis and synovitis. However, if there is no improvement after more than six months of treatment, or if the symptoms, such as increasing pain, worsen, then a minimally invasive surgery might be necessary to provide relief.