Figure 5.

Evidence of cartilage regeneration by second-look arthroscopy. Cartilage regeneration demonstrated in the medial compartment of the left knee of a 56 years old lady having stage II OA: A, cartilage erosion was found over the medial femoral condyle opposite the removed pathologic medial plica; B, the defect was found regenerated during the second-look arthroscopy 3 years later when the same knee suffered from hemoarthrosis after a falling down accident; C and D, The grade II degenerative medial compartment did not show any progression.

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