Fig. 4From: Biological and functional evaluation of a novel pyrolytic carbon implant for the treatment of focal osteochondral defects in the medial femoral condyle: assessment in a canine modelGross appearance of pyrolytic carbon (left) and Co-Cr alloy (right) implants at 12Â weeks (a, b), 24Â weeks (c, d), and 52Â weeks (e, f)Back to article page