Yes, you do. It gives you better balance.
I am not sure why your knees would hurt while walking. If it does not go away I would call a doctor.
The Arrival and District 9 both feature aliens whose knees bend backwards, but in real life, camelids fron knees bend forward, and rear knees bend backwards
Do penguins have knees? Yes. Penguins appear to have very short legs and no knees because only the lower leg is externally visible. Their knees and upper legs are feather covered, hiding them from view. This also means that penguins never get cold knees
It is very easy .. You are suppose to bend your knees alittle (:
You have to bend your knees so your weight shifts forward and gives the hit more power.
They're not really called knees, but yes, they are on the front legs, they bend like our knees, and the back legs bend like our elbows. :) hope i helped
The cast of Bend Your Knees - 2010 includes: Gareth Llewelyn Rebecca Stoddart as Sophie
quadriceps-bg
Every sport.
ostritch
They need to have knees to walk. And to swim. And occasionally to bend down and drink.