Prosthetic centres and limb-fitting services prescribing for users who feel the jolt of heel contact are the natural setting. The 70 to 146 kg rating and K1 to K4 range cover a broad adult caseload. The intended amputation levels are not stated, so confirm them before adding the foot to a fitting protocol.
Users who walk mainly on hard surfaces, such as pavements, concrete floors and paved streets, are the group an air cushion is most likely to help. So are users with a sensitive or bony residual limb, for whom a softer heel contact may improve comfort in the socket. Both are assumptions until the airbag's function is confirmed, and a walking trial on hard ground should test them.
Rehabilitation units can include hard-surface walking in the fitting trial and ask the user how heel contact feels. Recording the user's report and any pressure setting, if one exists, gives a baseline for later reviews.
Charitable limb programmes and export buyers should confirm how the airbag is maintained and whether spares are available before ordering, since a component that cannot be serviced locally becomes a risk over time. Confirm sidedness, the full size list, stiffness options and foot shell supply as well.
The foot is not suited to users below 70 kg or above 146 kg, to children, to services unable to maintain the airbag, or to anyone needing a hydraulic or powered ankle. The conformity documentation those procurement routes require is issued by the manufacturer and provided by the seller.