My 20 yr old grandson was in accident, both his legs are broke, one arm and he also has a brain injury. He was in a coma for 2 1/2 weeks, and he is now doing a lot better but complains of back pain. We believe it is because he's been in bed now for 2 1/2 months. We get him out of bed for PT and short trips in a wheel chair, But he says his back hurts after a few minutes in the chair. He can't even get confortable in bed anymore. Any suggestions on what we can do to help him ??