There were also no statistical differences between the 2 groups at the last follow-up ( P > .05 ) in ROM : forward flexion , 145.2 vs. 143.3 ; external rotation with 90 of abduction , 88.1 vs. 86.2 ; external rotation at side , 88.9 vs. 82.9 ; and internal rotation , 9.1 vs. 8.3 .