Gait Pattern Analysis After Arthroscopic Treament of Osteochondral Defects of Talus

"All enrolled patients will undergo a standardized single-stage arthroscopic procedure under spinal or general anesthesia with the patient supine and the ankle placed in appropriated position. Standard anteromedial and anterolateral portals are established. The talar osteochondral defect is inspected, measured, and any unstable cartilage is sharply débrided to create stable vertical walls, exposing healthy subchondral bone. Using a 1.0- to 1.2-mm awl, multiple perforations are made perpendicular to the lesion base, 3-4 mm apart and \~2-4 mm deep, until uniform marrow fat-bleeding is observed-mobilizing mesenchymal stem cells .A sterile, resorbable, type-I/III collagen bilayer scaffold is trimmed to the exact defect footprint using a template fashioned intra-operatively."