A suture comprising: an elongate body including an outer surface; at least one barb extending from the elongated body and defining an inner surface, the inner surface including: a substantially linear first portion disposed at a first orientation relative to a first longitudinal axis of the elongate body, wherein the first portion is disposed at a first angle from about 31 degrees to about 38 degrees relative to the first longitudinal axis of the elongate body; and a substantially linear second portion disposed at a second orientation relative to a second longitudinal axis of the elongate body, wherein the second portion is disposed at a second angle from about 1 degree to about 8 degrees relative to the second longitudinal axis of the elongate body; wherein the barbs are equally spaced and project towards one end of the suture, wherein at least one end of the suture comprises a loop; and wherein the suture is formed of absorbable materials, non-absorbable materials and combinations thereof.