Embodiments of systems and methods for fixing soft tissue are disclosed herein. In some embodiments, soft tissue may be fixed to an attachment surface (such as bone, other soft tissue, other implants, or allograft or xenograft materials) by providing a helical suture in the soft tissue, wherein the soft tissue has a longitudinal axis along which the soft tissue undergoes tension under normal physiological conditions, and wherein a longitudinal axis of the helical suture in the soft tissue is oriented parallel to the longitudinal axis of the soft tissue； and securing the helical suture to an attachment surface.
