At the time of the final follow-up , four patients ( 14.8 % ) in the concentric group had developed inferior scapular notching ( two with Nerot grade I and two with Nerot grade II ) , ranging in size from 1.1 to 7.4 mm , compared with one patient ( 4.3 % ; Nerot grade I ) in the eccentric group ( p = 0.36 ) .