鏡視下腱板修復術後の機能回復と疼痛閾値について

概要

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Background: The purpose of this study was to reveal the prognostic factors affecting outcomes of an arthroscopic rotator cuff repair: the postoperative outcomes of shoulders which were evaluated by pressure pain threshold(PPT), visual analog scale(VAS) , range of motions(ROM), clinical scores and tear size. Methods: The study included 33 patients (23 men and 10 women) with a mean age of 66 years old who underwent an arthroscopic rotator cuff repair. The arthroscopic diagnosis was a small tear in 8 patients, a medium tear in 13, and a large tear in 12.An electric pressure algometer was used to measure PPT on the rotator interval of bilateral shoulders. Results: PPT and VAS correlated with the ROM and clinical scores at same phase postoperatively. PPT at 1 and 6 months had a significant correlation with ROM at 12 months postoperatively. Small cuff tear cases had the tendency of PPT at 1 month postoperatively. Conclusion: These results indicated that peripheral nociceptive nerve sensitization, changing the PPT in the affected area, caused for lower ROM and poorer clinical outcomes. There is a possibility that PPT were useful for predicting objective factors in the intensity of postoperative function.