Compositions, methods and apparatus for surgical procedures

A method, apparatus and kit for preparing and performing a surgical procedure includes providing a medicinal composition having an autologous tissue medium and a therapeutic agent. the medicinal composition is then delivered to a surgical site in a patient before closing to reduce postoperative pain, provide an interpositional membrane to prevent or inhibit the formation of scar tissue, and/or promote hemostasis. The medicinal composition is suitable for use in a variety of types of surgery, and has particular application in bone or tissue grating and orthopaedic surgery, expecially spine surgery.