Our backs are remarkable. They support our bodies through everyday activities including sitting, standing, walking and lifting. We often take them for granted until we injure them. Problems with any of the back’s component parts — bones, muscles, ligaments, tendons, disks and nerves — can cause pain, but most often discomfort stems from muscles and ligaments strained by improper lifting or awkward movement. In some cases, there is a structural problem such as a bulging or ruptured disk, sciatica, arthritis, osteoporosis or skeletal irregularities. The exact cause is unknown in 85 percent of cases, despite advances in medical technology.
Though air travel slowed as airports temporarily closed and borders shuttered to stifle the spread of coronavirus, the airline industry — led by oneworld alliance member airlines — enacted enhanced protective measures to reduce risk and protect passengers.