Miyazaki Alberto Naoki, Silva Luciana Andrade DA, Checchia Caio Santos, Mussatto Julio Cesar DO Amaral, Moraes Vinicius Marques DE, Sella Guilherme DO Val
Santa Casa de Misericordia de Sao Paulo, Faculdade de Ciencias Medicas, Departamento de Ortopedia e Traumatologia, Grupo de Cirurgia do Ombro e Cotovelo, São Paulo, SP, Brazil.
Acta Ortop Bras. 2023 Jul 17;31(3):e262497. doi: 10.1590/1413-785220233103e262497. eCollection 2023.
Quantitative assessments of rotator cuff muscle changes after successful tendon repair are scarce. On the other hand, semiquantitative and subjective assessments are more abundant, but their findings are controversial. One hypothesis about this divergence is that there is an immediate decrease in the proportion of fatty infiltration after surgical repair.
Reassess fatty infiltration and muscle trophism of the rotator cuff after ten years of repair.
Prospective comparison study. A total of 10 patients diagnosed with rotator cuff injury underwent repair of the lesion, and MRI of the affected shoulder was performed in the preoperative, immediate postoperative, and late postoperative periods (ten years). A comparative study was performed at every moment.
At 5% significance level, the mean of the immediate postoperative period was higher for the variable trophism and true muscle percentage. Fatty infiltration showed no difference in the three periods observed.
Fatty infiltration does not change in the three periods evaluated and muscle trophism is greater in the immediate postoperative period. After ten years of rotator cuff repair, muscle trophism and fatty infiltration remain with statistically significantly equal results when compared to the preoperative period.
关于成功进行肌腱修复后肩袖肌变化的定量评估很少见。另一方面，半定量和主观评估更为丰富，但它们的结果存在争议。关于这种差异的一种假设是，手术修复后脂肪浸润比例会立即下降。
在修复十年后重新评估肩袖的脂肪浸润和肌肉营养状况。
前瞻性比较研究。共有10例诊断为肩袖损伤的患者接受了损伤修复，并在术前、术后即刻和术后晚期（十年）对患侧肩部进行了磁共振成像检查。在每个时间点进行比较研究。
在5%的显著性水平下，如果营养状况和真实肌肉百分比这两个变量，术后即刻的平均值更高。在观察的三个时期中，脂肪浸润没有差异。
在评估的三个时期中，脂肪浸润没有变化，术后即刻的肌肉营养状况更好。肩袖修复十年后，与术前相比，肌肉营养状况和脂肪浸润在统计学上仍有显著相同的结果。
