Interbody implant systems and methods of implant interbody implants are described. In one aspect, an implant includes a body have a distal end portion and a proximal end portion and a first articulation surface formed at a proximal end of the proximal end portion, An insertion instrument includes an elongate shaft having a proximal end portion and a distal end portion； and a second articulation surface formed at a distal end of the distal end portion. The second articulation surface is configured to interface with the first articulation surface. An attachment member is configured to connect the implant to the insertion instrument. The attachment member is actuatable to compress the first and second articulation surfaces together in a locked configuration with sufficient force to prevent relative rotation between the first and second articulation surfaces. The attachment member is actuatable to reduce an amount of compression force existing in the locked configuration to place the first and second articulation surfaces in an unlocked configuration such that the first articulation surface can rotate relative to the second articulation surface.
