Okay, OP has a condition that requires the use of one of those annoying rolling backpacks. Question: If carrying the load can be harmful to you, then wouldn't lifting the same amount of weight to put in a bike basket (and then take back out again) be just as potentially harmful?

Anyway, have a couple of thoughts to help lighten your load:

- Tell the school that you have a medical condition that precludes you from carrying/lifting heavy objects. You'd prefer to get your texts in digital format. A tablet PC/iPad/Kindle/eReader doesn't weigh nearly as much as college textbooks do.

-Depending on your schedule, do all of your reading at home and leave the books behind.

-Take really good notes. Most courses can be passed just by taking notes during the lectures without actually reading the corresponding text. Note I said 'Pass', not make the Dean's List.

-See if your school library keeps copies of textbooks on hand in their reference section- mine did.

-Barring all of that, get yourself a two wheeled kiddie trailer to put your backpack in. You would never have to fully lift the entire load again.