Get lighter furniture. That was my solution after back and neck injuries. I don't keep anything I can't lift and carry a reasonable distance myself -- for years, that was from my apartment to my pickup truck.

But if you're really attached to that furniture it's probably cheaper to hire a mover than to buy a trailer. That's what I'd do now. I sold my truck last year. Too expensive, didn't use it enough. But I know that's not an option for folks who don't have access to public transportation or reasonably priced taxis or movers.