A fixation unit for a suture-less fixation of tissue at a bone comprises an anchor element that is arranged to be fixed to a bone, and a retaining element that is arranged to be coupled with the anchor element to attach a tissue section to the bone. The anchor element and the retaining element are lockable to one another and form therebetween a retaining zone into which the tissue section is mountable. A handling device comprises a mounting tool that is arranged for inserting the fixation unit.
