To assess the reliability of a biomimetic osteochondral scaffold Maioregen (Finceramica Faenza SpA, Faenza, Italt) as a salvage and joint-preserving procedure in the treatment of late stages of osteonecrosis of the knee. Nine active patients aged under 65 year presenting with clinical and radiological signs of SPONK were treated with a biomimetic osteochondral scaffold. All patients were clinically evaluated preoperatively and yearly with a minimum follow-up of 2 years. Subjective IKDC and Lysholm Knee Scale were used to assess clinical outcome. Pre-operative and post-operative pain was quantified with VAS scale. Activity level were evaluated pre-operatively and at follow-up according to Tegner Activity Scale.Purpose
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