title: Treatment of Osteochondral Lesions of the Talus With Bone Marrow Stimulation and Chitosan-Glycerol Phosphate/Blood Implants (BST-CarGel).
abstract: Bone marrow stimulation (BMS) techniques represent the first-line treatment for unstable osteochondral lesions of the talus or after conservative treatment failure. These techniques are intended to penetrate the subchondral bone to elicit bleeding and allow precursor cells and cytokines from bone marrow to populate the lesion. However, the fibrocartilaginous repair tissue arising after marrow stimulation confers inferior mechanical and biological properties compared with the original hyaline cartilage. The limitations of BMS can be overcome by the use of the soluble chitosan-based polymer BST-CarGel (Piramal Life Sciences, Laval, Quebec, Canada). When mixed with freshly drawn autologous whole blood and applied to a lesion surgically prepared by BMS, BST-CarGel acts as a natural bioscaffold that increases the quantity and improves the residency of the blood clot formed in the cartilage lesion, enhancing the local healing response. The use of BST-CarGel has been previously described in the knee and hip joints with successful results. We describe the arthroscopic technique for BST-CarGel application in combination with BMS techniques for the treatment of osteochondral lesions of the talus.
authors: Department of Orthopaedics, Complutense University School of Medicine, Madrid, Spain; Department of Orthopaedic and Trauma Surgery, Hospital Universitario 12 de Octubre, Madrid, Spain.
authors: Jesús
authors: J
authors: Vilá Y Rico
authors: Department of Orthopedic and Trauma Surgery, Hospital ASEPEYO, Sant Cugat del Vallès, Spain.
authors: Antonio
authors: A
authors: Dalmau
authors: Department of Orthopaedic and Traumatology, Foot and Ankle Unit, Hospital Fremap de Sevilla, Sevilla, Spain.
authors: Francisco Javier
authors: FJ
authors: Chaqués
authors: Foot and Ankle Unit, Orthopedic Surgery, Hospital Clínic, University of Barcelona, Barcelona, Spain.
authors: Jordi
authors: J
authors: Asunción