My wife suffers from arthritis of the SI joint that started as the result of an injury five years ago. This makes hiking unbearably painful, and she can only go short distances before she has to quit. Backpacking is out of the question. She has been to many different doctors and received many treatments for managing pain, including acupuncture, but nothing seems to help. Would trekking poles help? Is there some other equipment that we can try that would help take pressure off the back/hips?