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. 2008 Jul 17;33(4):1031–1036. doi: 10.1007/s00264-008-0606-z

Fig. 4.

Fig. 4

a The double-barrel cannulated drill bit is centred with the guide pin to perform a dual action: drill the hole for the glenoid anchor screw, then, at the end of travel, drill a small cylindrical pit which will accommodate the bone block. b The glenoid anchor screw is fully buried into the glenoid. c The coracoid screw loads the bone block and screws into the anchor screw