A follow-up study of 33 rotator cuff tears treated surgically was reported. Painless full motion was obtained in 21 patients. 9 patients complained of a dull ache after working, or in cold weather, but the nature of the pain was not severe and it was diminished by only taking a rest. When there was proof of a complete tear of the rotator cuff, we recommended operative treatment as soon as possible, because the surgical procedure was easier and post-operative course smoother for a fresh rotator cuff tear than for an old one.