Spinal deformity refers to abnormal curvatures of the spine, such as scoliosis, lordosis, and kyphosis. These conditions can arise from genetic defects, injuries, diseases like osteoporosis or arthritis, neuromuscular disorders, or poor posture. Symptoms range from visible misalignment to pain, weakness, loss of sensation, and in severe cases, paralysis or organ compression. Treatment options vary from observation, bracing, medications, and physical therapy to complex surgeries, with early diagnosis offering the best outcomes. Marcus D. Mazur, MD, FAANS, is a board-certified fellowship-trained spine neurosurgeon. His clinical practice focuses on adult spinal surgery for disorders on the cervical, thoracic, and lumbar spine. He is a recognized expert in the treatment of adult spinal deformity, complex revision surgery, spinal oncology, and minimally invasive spine surgery. He also practices general neurosurgery.