An association between CRPS ( complex regional pain syndrome ) type 1 and rotator cuff tear has been documented. In this study, we report CRPS type 1 experienced with rotator cuff repair. 183 consecutive shoulders in 179 patients who underwent rotator cuff repair were studied retrospectively. CRPS type 1 was identified in 22 shoulders of 22 patients ( CRPS group ). 161 shoulders were the control group. We compared the clinical history, cuff tear size at operation, range of motion, muscle strength and UCLA scores between the two groups. The symptom rate of CRPS type 1 was 11.7%. The proportion of women in the CRPS group was significantly larger than that in the control group (P <0.05). There was no significance in age at operation, cuff tear by trauma, length of cuff tear, and UCLA score between the two groups. The women's time of development of symptoms was intentionally later, the average of 22 days, than the average of 9 days for a man (P <0.05). There was no significant difference in clinical history, duration of development of the condition and UCLA score between woman and man. However, since it corresponded immediately after development of symptoms, the condition disappeared in an average of seven months. The possibility of development of symptoms in a woman is high, and the case whose symptoms were shown after three weeks after the operation has a risk of the condition being prolonged. CRPS TypeI after Operation with Rotator Cuff Tears did not affect postoperative results.
