slipcover definition: a removable, fitted cloth cover for an armchair, sofa, etc.transitive verb -Â·covÂ·ered, -Â·covÂ·erÂ·ing to cover (a chair, etc.) with a slipcover... Definitions
Upper and middle back pain may be caused by: 1  Overuse, muscle strain, or injury to the muscles, ligaments, and discs that support your spine. 2  Poor posture. 3  Pressure on the spinal nervesspinal nerves from certain problems, such as a herniated disc.  A fracture of one of the vertebrae.
Back pain can come on suddenly and last less than six weeks (acute), which may be caused by a fall or heavy lifting. Back pain that lasts more than three months (chronic) is less common than acute pain. Back pain often develops without a specific cause that your doctor can identify with a test or imaging study.Conditions commonly linked to back pain include: 1  Muscle or ligament strain. 2  Repeated heavy lifting or a sudden awkward movement may strain back muscles and spinal ligaments.3  If you're in poor physical condition, constant strain on your back may cause painful muscle spasms. Back pain can occur if your spine curves abnormally. 2  Scoliosis, a condition in which your spine curves to the side, also may lead to back pain, but generally only if the scoliosis is severe. 3  Osteoporosis. 4  Your spine's vertebrae can develop compression fractures if your bones become porous and brittle.