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Histologic (safranin O/fast green) and vascular examination of medial menisci after meniscus repair in the inner region and treatment with hyaluronan. A, a coronal section of a specimen showing no healing response (arrow) but the presence of glycosaminoglycans after meniscus repair. The asterisk marks a hole made by a suture string. B, an upper view of a specimen showing synovial vascularity separated from the injured/repaired region (arrow).
