Optimal time for manipulation of frozen shoulder may be between 6 and 9 months

Background and Aims:Idiopathic frozen shoulder can be successfully treated conservatively. Manipulation under anesthesia, in randomized controlled studies, has proven to bring no additional benefit to other treatments. However, manipulation under anesthesia still is a used method mainly among patients with unbearable pain or too longstanding restriction of shoulder motion. Manipulation under anesthesia may lead to significant improvement in shoulder motion and function. However, the best timing for manipulation under anesthesia is still unclear. We therefore investigated whether timing of manipulation under anesthesia has influence on the results of manipulation under anesthesia, concerning range of motion, pain, and function.Material and Methods:We followed 57 patients (65 shoulders; 31 in women) at 2–14 years after manipulation under anesthesia evaluating range of motion, pain, and function. Their mean age at manipulation under anesthesia was 54.0 years. A total of 10 patients had diabetes. The time bet...