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(A) Monofilament and (B) multifilament sutures. Reprinted from Ref. [38]. (C) Unidirectional barb sutures; barbs all point to the same direction (D) with two-way barbs stitched together, and the two sets of barbs are pointed in opposite directions according to the midpoint of the length of the sutures. Reprinted with permission from Ref. [39] Copyright 2021 John Wiley and Sons.
