A bone attachment assembly (100, 700) comprising: - an attachment head (101, 701) comprising first and second upwardly extending sidewalls forming a channel for a rod to extend through, the channel extending from a top region to a base region of the attachment head along a longitudinal screw axis of the bone attachment assembly - the channel defining an opening into the top region for the insertion of the rod; - a set screw (108, 708) configured to attach to the attachment head (101, 701) and having a pointed tip; and - a rod carrier (102, 702) coupled to the attachment head (101, 701), - the rod carrier (102, 702) having an upper concave rod surface and a lower convex surface such that the upper concave rod surface faces the rod and the lower convex surface faces the attachment head (101, 701), - the rod carrier (102, 702) is pivotably coupled to the attachment head (101,701) so as to pivot about a lateral axis of the bone attachment assembly that is substantially perpendicular to the longitudinal screw axis, characterized in that - the upper concave rod surface having a first raised portion (111, 711) formed along a first peripheral edge of the rod carrier and a second raised portion (112, 712) formed along a second peripheral edge of the rod carrier, the first and second raised portions (111, 711, 112, 712) define a lowered portion (130, 730) positioned between the first raised portion (111, 711) and the second raised portion (112, 712), wherein the first raised portion (111, 711), the second raised portion (112, 712), and the set screw (108, 708) are configured to directly contact the rod in order to retain the rod within the attachment head (101, 701) and - a threaded screw shaft attached to a base region of the attachment head (101, 701), wherein, when the rod is positioned on a portion of the rod surface and the longitudinal axis of the rod is substantially perpendicular to the longitudinal axis of the threaded screw shaft, the first raised portion (111, 711), the second raised portion (112, 712), and a pointed tip of the set screw (108, 708) define three points of contact of the rod within the attachment head (101, 701), wherein the rod is held within the attachment head (101, 701) by only the three points of contact. - an attachment head (101, 701) comprising first and second upwardly extending sidewalls forming a channel for a rod to extend through, the channel extending from a top region to a base region of the attachment head along a longitudinal screw axis of the bone attachment assembly - the channel defining an opening into the top region for the insertion of the rod; - a set screw (108, 708) configured to attach to the attachment head (101, 701) and having a pointed tip; and - a rod carrier (102, 702) coupled to the attachment head (101, 701), - the rod carrier (102, 702) having an upper concave rod surface and a lower convex surface such that the upper concave rod surface faces the rod and the lower convex surface faces the attachment head (101, 701), - the rod carrier (102, 702) is pivotably coupled to the attachment head (101,701) so as to pivot about a lateral axis of the bone attachment assembly that is substantially perpendicular to the longitudinal screw axis, characterized in that - the upper concave rod surface having a first raised portion (111, 711) formed along a first peripheral edge of the rod carrier and a second raised portion (112, 712) formed along a second peripheral edge of the rod carrier, the first and second raised portions (111, 711, 112, 712) define a lowered portion (130, 730) positioned between the first raised portion (111, 711) and the second raised portion (112, 712), wherein the first raised portion (111, 711), the second raised portion (112, 712), and the set screw (108, 708) are configured to directly contact the rod in order to retain the rod within the attachment head (101, 701) and - a threaded screw shaft attached to a base region of the attachment head (101, 701), wherein, when the rod is positioned on a portion of the rod surface and the longitudinal axis of the rod is substantially perpendicular to the longitudinal axis of the threaded screw shaft, the first raised portion (111, 711), the second raised portion (112, 712), and a pointed tip of the set screw (108, 708) define three points of contact of the rod within the attachment head (101, 701), wherein the rod is held within the attachment head (101, 701) by only the three points of contact.