Provided are compositions for promoting bone and cartilage growth. In certain embodiments, tissue graft compositions comprising a polymeric scaffold (e.g., PLGA), hyaluronic acid, and substantially purified mononucleated cells derived from bone marrow aspirate. In various embodiments, the tissue graft composition may comprise thrombin. The tissue grafts may be used to promote bone growth, e.g., in a spinal fusion operation.
