Assessing the accuracy of arthroscopic and open measurements of the size of rotator cuff tears: A simulation-based study

Table 2 Overall mean difference between the groups of measurements

Groups	mean difference, mm	P1 value
Arthroscopic vs computerized	-2.4 ± 3.2	< 0.001
Arthroscopic vs open	-2 ± 2.6	< 0.001
Open vs computerized	-0.4 ± 1.6	0.014

¹Wilcoxon signed ranks test, level of significance P = 0.016 (Bonferroni correction).