כאבים והגבלה ביישור המרפק

I am a man of 30 years old,married+4. Background: borderline hypertension S/p laminectomy C3-4-5 (1988) Current problem: During the last seven months I suffer from pain and edema in my RT elbow. In addition, I cannot extend it fully (angle of 30 degrees). I have preformed the following tests: 1) CBC, ESR, Uric acid-normal 2) CT of elbows-bones are normal, there is soft tissue or exudative fluid instead of the fat pad in the RT side of olecranon fossa. (exudate? ,hemarthrosis?, synovial solid process?) 3) Bone scan- diffuse high intake in RT elbow. Can be due to inflammatory diffuse process in the elbow. 4) U.S.- in the back side of elbow there is a process wich looks solid in a diameter of 1.5cm. hematoma?, tumor? 5) MRI with gadolinum- there is an exudate in all the spaces of the elbow. At the end of the triceps there is a tumor with extention to the olecranon fossa around wich the fat intakes gadolinum. The bones and articular plates are normal. This finding can suggest tendinosis of the triceps with ganglion. I have consulted a few orthopedic surgeons who suggested the following options: A. arthroscopy of the elbow- suggested by head of "Shaare Zedek Medical Center Jerusalem " orthopedic department. He told me that there is 5 percent risk to the function of the elbow in this procedure and that it is a procedure done rarely in the elbow. B. Prednisone for few months. I need a consultation regarding: *what is the preferred treatment for my problem? *If I really need arthroscopy of the elbow , who are the leading surgeons in this field in Israel or abroad?