This is a Study to Evaluate Nanofractures Technique in the Treatment of Cartilage Lesions

"The planned study intervention consists of nanofracture surgical procedure for the treatment of cartilage lesions of the knee.~Nanofractures will be standardized 9 mm deep perforations in the subchondral bone.~Under arthroscopic view, the cartilage lesion is shaved to expose the margins of the lesion and remove damaged tissue. After a satisfactory lesion debridement is performed, a nanofracture device (Plasmaconcept NanoFx®) is placed through the arthroscopic portal. The awl is repeatedly penetrated through the bone until marrow elements are seen in the joint. The flow of arthroscopic fluid is interrupted to better observe the marrow elements emanating from the nanofracture holes. The distance between two consecutive perforations will be approximately 2-3 mm, and the number of perforations will depend on the cartilage lesion extension. All post-operative procedures, including the rehabilitation protocol, will be carried out according to the usual standard of care."