According to an aspect of some embodiments there is provided a bone anchorincluding an elongated core having a tip at a distal end and coupled to a headat a proximalend, and a segmented helical thread defining one or more gaps therein, eachgap defining atleast a trailing wall, the trailing wall having a cutting surface including atleast one cuttingedge. The bone cutting surface and the cutting edge configured to cut bone andguide bonefragments radially inwards. According to an aspect of some embodiments thereis furtherprovided a bone anchor kit and a method for implanting the bone anchor inbone.
