the top of the handle should be in line with the styloid process (can also use the wrist crease) whilst the arm is relaxed by the side
patients taller than 5"11 require longer crutches
get pts to stand up using the arms of the chair and hold onto a Zimmer frame when measuring (only hold onto frame after standing up)
stand next to pts at all times
after arms are in crutches get pts to lean forwards with crutches and bring injured leg forward to make a triangular base of support