The present invention relates to shock absorber insert for retro fitment into the body of an existing walking aid, such as a crutch, to dampen the impact force between the walking aid and a ground surface. Known shock absorbing walking aids can be relatively expensive to manufacture, heavy to use and do not provide for adjustment of the shock absorber. The shock absorber insert (1) of the present invention comprises a piston cylinder (11) with an end wall (11A) a piston (5) which moves axially within the piston cylinder (11) and a damper (10) located on a piston rod (9) and abut the end wall (11A) to reduce the speed of movement of the piston rod (9) within the piston cylinder (11). The shock absorber insert is either mid mounted between an upper (2) and lower (3) shaft or bottom mounted into a lower end of the lower (3) shaft.
