Fig 1.

A 3-stage sequential procedure (bone marrow harvest from the femoral notch, leukocyte-poor platelet concentrate preparation, and biological graft augmentation) during the anterior cruciate ligament reconstruction using the Arthrex Angel cPRP & Bone Marrow Processing System kit. (A) Trocar insertion at the femoral notch apex of the right knee—usually at the center of the femur or 5 mm lateral to the lateral edge of the posterior cruciate ligament insertion—seen from the anterolateral portal with the patient on the supine position. (B) Preparation of leukocyte-poor platelet concentrate from bone marrow aspirate through centrifugation and concentrated red cells separation by wavelengths using the Arthrex Angel cPRP & Bone Marrow Processing System kit. (C) Biological graft augmentation with leukocyte-poor platelet concentrate preparation through the anterolateral arthroscopic portal after arthroscopic confirmation of a satisfactory ACL reconstruction. (ACL, anterior cruciate ligament.)