Patent ID: 8801761

Claim:
An implant comprising: a receiver having at least one internal wall defining a bore, at least a portion of said receiver having a receiver thread, said receiver further comprising a rod-receiving channel in communication with said bore, said rod-receiving channel being adapted to receive a rod; a polyaxial screw for receipt in said bore; a cap having a cap thread for mating with said receiver thread to permit said cap to be screwed on said receiver in order to lock said rod in said rod-receiving channel of said receiver; and a lock aid associated with at least one of said receiver or said cap; said lock aid comprising an indicia generally aligned with a leading edge of said cap thread or said receiver thread; at least one of said receiver thread or said cap thread being defined by a male thread, a leading portion of said male thread being truncated or cut out to provide at least one of a tactile or a visual feedback; wherein said cap comprises a deformable area adapted to provide said lock aid, said deformable area engaging said rod and deforming on it after said rod is received in said receiver and said cap is rotated and screwed on said receiver; wherein said male thread and said deformable area are monolithic and are integrally formed in a rod-engaging end of said cap.