The disclosure provides examples of an open architecture anchor (100) for securing soft tissue to bone, for example, to repair a torn rotor cuff. The anchor includes a helical screw thread (105) having a base (125) and two sidewalls (135a, 135b) that are non-linear. The non-linear sidewalls extend from opposing ends of the base and meet at a peak (140). The non-linear sidewalls are circumscribed within a triangle (145) defined by the peak and ends of the base. Compared to the standard triangle profile, the helical screw thread profile has a smaller cross-sectional surface area and, consequently, removes less bone. The helical screw thread having the reduced cross-sectional area preserves bone stock and enhances the holding strength of the anchor in bone.
