Muscle aches and pains are common and can involve more than one muscle. Muscle pain also can involve ligaments, tendons, and fascia. Fascias are the soft tissues that connect muscles, bones, and organs.| medlineplus.gov
Compression fractures of the back are broken vertebrae. Vertebrae are the bones of the spine.| medlineplus.gov
Spondylolisthesis is a condition in which a bone (vertebra) in the spine moves forward, out of its proper position, in relation to the bone below it.| medlineplus.gov