The success of any treatment lies in its longevity. The new minimally invasive techniques are being invented. However, timely research, on the basis of randomized controlled trial comparing different methods of cartilage reconstruction is necessary for decision-making in today's evidence-based medical world.
Autologous chondrocyte implantation seems to provide a durable clinical outcome in those patients demonstrating success at 15 months after operation. Comparisons between other outcome measures of autologous chondrocyte implantation should be focused on the clinical status at 15 months after surgery. The patient-reported clinical outcome at 15 months is a major predictor of the mid- to long-term success of autologous chondrocyte implantation.
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