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Gross appearance of the healing anterior cruciate ligament in the juvenile, adolescent and adult age groups in both the untreated knees (top row) and the knees treated with suture repair augmented with a collagen-platelet composite (CPC) (bottom row). For the knees treated with the collagen-platelet composite, organized collagenous tissue was visible in the region of the anterior cruciate ligament and appeared more robust and less lax than that in the untreated contralateral knees.
