A system for implanting an anchor into bone, the system comprising a curved cannulated guide for percutaneous insertion, having a proximal end and a distal end a flexible drill insertable through the curved guide from the proximal end to the distal end, the flexible drill having a shaft having a flexible portion and a flexible inserter for inserting a suture anchor into a bore at the anatomical site formed by the flexible drill, the flexible inserter having a shaft having a flexible portion, wherein the flexible portions of both the flexible drill and flexible inserter include a series of discrete, interlocking segments.