In measuring axillary crutches, where should the crutch armrests be placed relative to the axilla?

• A. Under the axilla with space two fingerwidths between axilla and armrest
• B. Under the elbow
• C. Under the arm but touching
• D. In front of the foot

Answer: (A)

Proper fitting of axillary crutches requires the top pad to sit under the armpit with a small gap between the pad and the axilla. About two fingerwidths of space is a safe guideline. This clearance prevents pressure on the axillary nerves and vessels, reducing the risk of numbness or crutch palsy, while still allowing weight to be borne mainly through the hands on the grips for control and stability. If the pad presses directly into the axilla, nerve and vessel compression can occur; if there’s too much space, the crutch can feel unstable. So placing the armrest under the armpit with a little clearance achieves the right balance of protection and support.