The group's principal activity is to provide the services and products used in the repair and healing of the musculoskeletal system. The group has two operating segments: demineralized bone matrix segment and base tissue segment. The demineralized bone matrix segment is engaged in the processing and marketing of grafton(R) and private label demineralized bone matrix. Demineralized bone matrix is processed using the group's advanced proprietary demineralization process. The base tissue segment primarily is engaged in the processing of mineralized weight-bearing allograft bone tissue. The group's other business units are engaged in marketing and distributing metal spinal implant products and processing, marketing and distributing bovine tissue products. These products and services are marketed primarily to the orthopedic, spinal, neurological, oral/maxillofacial, dental and general surgery customers in the United States and Europe.