Table 2: Summary of Statistical Analysis of the Differences Between the Preoperative Scores and the Various Assessment Intervals

Assessment Interval SST Mean ± SD P-Values CMSMean ± SD P-Values Rowe Score Mean ± SD P-Values
Preoperative 10.9 ± 2.2 87.2 ± 14.9 60.5 ± 12.9
3 months 9.6 ± 1.7 P = 0.015* 80.4 ± 7.1 0.017* 81.7 ± 9.4 0.018*
6 months 10.9 ± 2.5 P = 0.317 92.0 ± 3.4 0.609 88.0 ± 10.6 0.018*
12 months 11.0 ± 2.6 P = 0.317 98.3 ± 3.0 0.016* 94.3 ± 12.7 0.017*
Final follow up median 39 months (range; 9 to 45) 11.0 ± 1.2 P = 0.655 91.0 ± 10.2 0.865 91.8 ± 8.3 0.018*

SST: Simple Shoulder Test, CMS: Constant Murley Score, SD: Standard Deviation.
* p < 0,05; significant.