An apparatus for the approximation of two bones, comprising: a first anchor comprising a proximal end, a distal end configured for insertion into a first bone, and a bore extending from the proximal end towards the distal end, the bore including a proximal region defining a plurality of walls, and an intermediate region distal to the proximal region including a first mount; and a second anchor comprising: a first component including a proximal end, a distal end sized to be inserted into the proximal region of the bore in a delivery configuration and having a predetermined shape such that the distal end engages the plurality of walls in the delivery configuration to transfer forces from a driver tool coupled to the first component to the first anchor, and a second mount; a second component including a tubular body sized to be advanced over the first component proximal end and including one or more features for cooperating with one or more corresponding features on the first component to control advancement of the second component over the first component, and an enlarged head on a proximal end of the tubular body; and a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore in a deployed configuration. a first anchor comprising a proximal end, a distal end configured for insertion into a first bone, and a bore extending from the proximal end towards the distal end, the bore including a proximal region defining a plurality of walls, and an intermediate region distal to the proximal region including a first mount; and a second anchor comprising: a first component including a proximal end, a distal end sized to be inserted into the proximal region of the bore in a delivery configuration and having a predetermined shape such that the distal end engages the plurality of walls in the delivery configuration to transfer forces from a driver tool coupled to the first component to the first anchor, and a second mount; a second component including a tubular body sized to be advanced over the first component proximal end and including one or more features for cooperating with one or more corresponding features on the first component to control advancement of the second component over the first component, and an enlarged head on a proximal end of the tubular body; and a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore in a deployed configuration. a first component including a proximal end, a distal end sized to be inserted into the proximal region of the bore in a delivery configuration and having a predetermined shape such that the distal end engages the plurality of walls in the delivery configuration to transfer forces from a driver tool coupled to the first component to the first anchor, and a second mount; a second component including a tubular body sized to be advanced over the first component proximal end and including one or more features for cooperating with one or more corresponding features on the first component to control advancement of the second component over the first component, and an enlarged head on a proximal end of the tubular body; and a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore in a deployed configuration.