Classification of graft hypertrophy after autologous chondrocyte implantation of full-thickness chondral defects in the knee.


OBJECTIVE Graft hypertrophy is a major complication seen in autologous chondrocyte implantation (ACI) with a periosteal flap. We present the first magnetic resonance imaging (MRI) classification for periosteal hypertrophy including a grading of clinical symptoms and the surgical consequences. METHODS One hundred and two patients with isolated chondral… (More)


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