US Patent 9707013 Spinal implant system and methods of use

A bone fastener comprises a first member including an inner surface defining an implant cavity and a wall defining a groove. A first element is disposed within the groove. A second member is configured to penetrate tissue and engageable with the first element to dispose the first element in a capture orientation within the groove to connect the members. A second element is engageable with the first element to urge the first element to the capture orientation. Systems, instruments and methods are disclosed.