抄録
Postoperative results for the rotator cuff tear are good, but some cases with pain remain. A prior report described that factors of persistent postoperative pain in rotator cuff tear were "tear size" and "postoperative range of motion (ROM) limitation in the direction of extension and CTD", but we were unable to refer to the cause of the latter. This study is intended to investigate the findings of cases with postoperative ROM limitation, and to determine a cause for limitation of the direction of extension and CTD. From among 391 rotator cuff tear patients for whom more than 1 year postoperative had passed, we extracted 2 groups (Excellent 50 shoulders, Poor 50 shoulders) according to results of each direction of extension and CTD during the 1st postoperative year. We investigated each group. We evaluated patients' medical histories, tear forms, and preoperative clinical examination results. Regarding the 2 groups for extension, significantly more cases of preoperative limitation of extension and subscapular tendon rupture occurred in the Poor group. Of the 2 groups regarding CTD, there were significantly more cases with a preoperative limitation of CTD, large tear size, and a subscapular muscle tendon rupture in the Poor group. From these results, we inferred that the cause of "limitation of extension and CTD during the 1st postoperative year" was presence of preoperative limitations of extension and CTD or subscapular tendon rupture.
