Alison Culshaw from Adventure Expeditions explores when and where walking with poles is a help and when a hindrance, and offers some tips on how to use them.
"It has been suggested that poles can reduce the pressure on every step by seven kilos, which translates to 30 tonnes less pressure on the knees over a full day trek. That's about the weight of six elephants!"
Read more at http://www.ukhillwalking.com/articles/page.php?id=3375