Morning lower back pain is stiffness or aching in the lumbar spine that appears on waking and usually eases within 30 to 60 minutes of movement, caused by overnight immobility, sleep posture, or an unsupportive sleep surface.
Good neck posture is a structural alignment where your ears stack vertically over your shoulders, your chin remains level, and the natural inward curve of your cervical spine (the "C-curve") is preserved without muscular strain.
A dowager's hump in older adults is a forward rounding at the base of the neck and upper back caused by long-term postural changes, weakened postural muscles, thoracic stiffness, and in some cases age-related changes in spinal bone density.
Spinal fusion is a surgical procedure that permanently joins two or more vertebrae in the spine, eliminating painful movement between unstable or damaged segments.