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Comparison of an A3 pulley before and after rupture. Axial PD fs and histologic correlation before rupture creation (above) and after rupture creation (below). P = phalanx. This A3 rupture was characterized and confirmed as grade 1 (SMOOTH.RUPT). FT = flexor tendon. Arrowhead = intact A3 pulley. Arrow = disrupted pulley stump. Lightning bolt = exact spot of rupture. VP = volar plate.
