Additional file 2.

Video 2. Evidence of cartilage regeneration after ACRFP by a second-look arthroscopy. This 56 years old lady received ACRFP and have had experienced a satisfactory outcome until three years later when she suffered from a falling down accident with the same knee injured. We therefore had the chance to perform a second-look arthroscopy and visualized the evidence of cartilage regeneration over her previous chondral defect on the medial femoral condyle.

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Lyu et al. BMC Musculoskeletal Disorders 2012 13:226   doi:10.1186/1471-2474-13-226