When it comes to surgical implants, RTI Biologics recommends the natural alternative. The firm develops products made from human and animal tissue that are used in orthopedic, dental, and other surgeries to repair fractures, spinal disorders, sports injuries, breast reconstruction, and other procedures. Using its BioCleanse and Tutoplast processes, the company sterilizes tissue -- including bone, tendons, and skin -- that is then used in surgeries. RTI Biologics sells its allografts (made from human tissue) and xenografts (made from animals) in the US and more than 30 countries around the globe. Its direct sales force targets the sports medicine and general orthopedic markets.