What is medical fusion? Medical Definition of Spinal fusion. Spinal fusion: A surgical procedure in which two or more of the vertebrae in the spine are united together so that motion no longer occurs between them. Spinal fusion may be done to treat a number of conditions, including scoliosis, deformity, fracture, and disc disease.What is med fusion? med fusion. med fusion, an integrated Molecular Center of Excellence and clinical trials organization, delivers support to healthcare providers and biotech/pharmaceutical companies to consistently meet the needs of patients.What is the medical term for fusion? An arthrodesis is a surgical procedure, also called a joint fusion. In performing an arthrodesis, the goal is to permanently hold a joint in a fixed position, and allow the bone to grow across that joint. While this means the joint will never bend again, there is often dramatic pain relief in that area.What is medical staffing agency? 1.1 Products and Services. The Medical Staffing Agency intends to become a regional provider of temporary and permanent employment solutions for nurses/doctors/medical technicians that work in clinics, hospitals, assisted living facilities, and outpatient centers.