My mother is 65 years had a right hand wrist fracture of radius bone on 26 Dec 15. Her cast was removed on 27 Jan 16. The x ray shows proper reduction of the bone fracture but her hand is swollen and has pain. After removal of cast she has been taking wax heat and doing some basic hand movement exercises. Although the swelling has reduced since 27 Jan, but its not gone fully. What is the reason and remedy?