A system for fixing a proximal bone mass to a distal bone mass, comprising: a guide wire configured to be driven through the proximal bone mass and the distal bone mass to define a path through the proximal bone mass and the distal bone mass; a suture insertable through the proximal bone mass into the distal bone mass along the path defined by the guide wire; and a suture anchor system, configured to be fixed to the distal bone mass and tensioned to draw the distal bone mass against the proximal bone mass, wherein the suture anchor system comprises: (a) a nose portion comprising a flexible element that is configured to expand radially when the suture is tensioned; and (b) a tail portion having: (i) one or more fixation features engagable to a bone surface of the distal bone mass to fix the tail portion within the distal bone mass; and (ii) an internal channel extending from a proximal opening in a proximal end of the tail portion to a distal opening in a distal end of the tail portion, wherein the suture is configured to extend through the internal channel of the tail portion, through the flexible element of the nose portion (34 and return through the tail portion such that the nose portion is positionable adjacent to the distal opening of the tail portion, and wherein the suture can be tensioned to draw the nose portion against the tail portion to facilitate radial expansion of the nose portion against the distal bone mass. a guide wire configured to be driven through the proximal bone mass and the distal bone mass to define a path through the proximal bone mass and the distal bone mass; a suture insertable through the proximal bone mass into the distal bone mass along the path defined by the guide wire; and a suture anchor system, configured to be fixed to the distal bone mass and tensioned to draw the distal bone mass against the proximal bone mass, wherein the suture anchor system comprises: (a) a nose portion comprising a flexible element that is configured to expand radially when the suture is tensioned; and (b) a tail portion having: (i) one or more fixation features engagable to a bone surface of the distal bone mass to fix the tail portion within the distal bone mass; and (ii) an internal channel extending from a proximal opening in a proximal end of the tail portion to a distal opening in a distal end of the tail portion, (a) a nose portion comprising a flexible element that is configured to expand radially when the suture is tensioned; and (b) a tail portion having: (i) one or more fixation features engagable to a bone surface of the distal bone mass to fix the tail portion within the distal bone mass; and (ii) an internal channel extending from a proximal opening in a proximal end of the tail portion to a distal opening in a distal end of the tail portion, (i) one or more fixation features engagable to a bone surface of the distal bone mass to fix the tail portion within the distal bone mass; and (ii) an internal channel extending from a proximal opening in a proximal end of the tail portion to a distal opening in a distal end of the tail portion, wherein the suture is configured to extend through the internal channel of the tail portion, through the flexible element of the nose portion (34 and return through the tail portion such that the nose portion is positionable adjacent to the distal opening of the tail portion, and wherein the suture can be tensioned to draw the nose portion against the tail portion to facilitate radial expansion of the nose portion against the distal bone mass.