and Durability Tests
Air Force has done both static and fatigue tests on the compostie
maximum weight of 715 pounds can be applied in the axial
direction to the handle of one of these crutches.
Fatigue tests were conducted for cycles equivalent to
8.7 years use of crutch with no apparent damage to the
$495 + tax (7%) + shipping and handling ($15)
the height h1 (ground to top of the handle) and length h2
(top of the handle to middle of the cuff). see figure attached.