Orthopaedics and Rehabilitation is one of the clinical centers of the Oregon Health & Science University, and is located in Portland, Ore. It has a staff of professional and trained orthopedic physicians and surgeons and rehabilitative specialists. Its doctors have expertise in providing treatment for various disorders, such as oseoarthritis, avascular necrosis, bursitis, tendonitis, and foot, ankle, knee and bone injuries. Additionally, the center has special departments for physical medicine and rehabilitation, spine injuries, and trauma and stress-related disorders. The center also provides treatment through arthroplasty, and physical and occupational therapies. Orthopaedics and Rehabilitation clinic additionally offers various diagnostic imaging services, such as X-ray, magnetic resonance imaging and bone density studies. Its doctors also provide various other treatments, such as cold compresses, ultrasonic waves, muscle strengthening exercises, anti-inflammatory medications and knee replacement surgeries.