Early results of continuous passive motion after rotator cuff repair: a prospective, randomized, blinded, controlled study.

Purpose: To determine the effect of continuous passive motion (CPM) on rotator cuff repair (RCR).

Methods: A prospective, randomized, blinded, controlled study was performed on all patients undergoing primary RCR between December 1992 and January 1994. A preoperative "shoulder score" was calculated for each patient based on four scales: function (50%), pain (20%), muscle strength (15%), and range-of-motion (ROM) (15%).