can be functional as fasteners 70 and 80 the basic common elements of the fasteners 70 and 80 are seen in the example of a threaded fastener 100 in shown in fig1 and a barbed fastener 120 shown in fig1 the threaded fastener 100 and the barbed fastener 120 both have a head 73 comprising a head diameter 74 a drive feature 72 and a head underside 71 the drive feature in the threaded fastener 100 is an internal female hex drive feature 102 the drive feature in the barbed fastener 120 is an external male drive feature 122 the shape of the underside 71 of the barbed fastener 120 is a chamfer cut 124 and the underside of the threaded fastener 100 is rounded cut 104 the underside 71 shape of both the threaded fastener 100 and the barbed fastener 120 examples are dimensioned to mate with shapes of the first opening 31 and the second opening 32 in the link 30 directly adjacent to the head 72 on both threaded fastener 100 and the barbed fastener 120 is a fastener shaft 79 with a shaft diameter 76 protruding from the shaft 79 is the aforementioned engager 75 with a fixation outer diameter 77 this fixation diameter varies depending on the bone that is being treated and the size of the patient typically this diameter is from 1 mm to 10 mm the shaft diameter 76 can be an undercut shaft 125 as shown in the barbed fastener 120 with a diameter 75 smaller than the fixation outer diameter 77.