A rotary tack (10) including a helical body (12) constructed of a resorbable material and having a closed-loop base (14) and a helix of spiral coils (16) that extend from the base (14) which terminate in a tip (18) for piercing tissue, wherein each of the coils (16) has a cross-section with an inner perimeter including an arcuate portion (20) and a straight portion (22) contiguous to each other.
