Subtalar arthroeresis implant trial system

A implantation assembly, comprising an implantation tool and a component, wherein:

• the implantation tool comprises:
• an elongate inner shaft having a first end;
• a first post coupled to the elongate inner shaft proximate the first end of the elongate inner shaft, the first post configured to fit into a locking slot of the component to couple the component with the elongate inner shaft;
• a hollow outer shaft defining a longitudinal axial bore within which the elongate inner shaft is disposed, the hollow outer shaft able to slide along the elongate inner shaft from a first longitudinal position to a second longitudinal position, the hollow outer shaft including a first locking arm operable to fit into a sliding portion of the component in a manner which prevents the component from rotating relative to the first post once the first post is positioned in the locking slot;
• and
• the component comprises:
• an end with a recessed central portion adapted to fit over the first end of the elongate inner shaft;
• and
• a groove having the sliding portion and the locking slot, the locking slot configured to rotate onto the first post;
• the component has first and second orientations relative to the elongate inner shaft, wherein in the first orientation of the component relative to the elongate inner shaft the sliding portion of the groove is in a position to receive the post and wherein in the second orientation of the component relative to the elongate inner shaft the first post resides in the locking slot of the groove;
• the sliding portion of the groove is disposed perpendicular to the locking slot;
• and
• the locking arm is operable to prevent the component from rotating relative to the first post once the first post is positioned in the locking slot be closing off the sliding portion from the locking slot.