A suture anchor for fixation within an anatomical structure includes an actuation member in contact with an anchor body at a first location thereof. The anchor body is elongate along a direction of elongation and defines a central axis. In a neutral configuration, the anchor body is flat and defines a thickness along a transverse direction and a width along a lateral direction, the width being greater than the thickness. The anchor body has first and second tails that are braided together along a portion of the actuation member from the first location to a second location of the anchor body. The actuation member is configured to apply a force to the braided anchor body so as to actuate the anchor body in a manner increasing its maximum thickness along a second direction that is angularly offset from the direction of elongation.