Fitting an Assistive Device

An assistive device is something that enables a person to accomplish more than what they are currently able to. In order for that to happen, the assistive device needs to be appropriately fitted. This step is important because as a therapist, you want to make sure that their device will be of use to them in their environment. Consider things like their age, physical ability, cognition, and endurance. You want to be sure that it works for them in their household and in any other area that they frequent. Another important aspect of fitting an assistive device is for comfort. Not comfort in the sense like they're relaxing on a couch, but comfort in the sense that they are comfortable to move about their space without the fear of falling, slipping, or getting injured. An appropriate fit will decrease the likely hood of fear and injuries.
To fit a client with a cane, you need to be sure the hand grip should be in line with the ulnar styloid, the wrist crease, or the greater trochanter. Conduct this placement with the elbow relaxed and flexed at about 20-30 degrees. Make sure the shoulders are relaxed as well, not elevated. This is the least stable form of assistive equipment
In order to fit someone for axillary crutches, you would do the same as above except you will add the alignment of the axillary rest. It should be approximately 5 cm below the floor of the axilla.
The Loftstrand crutches are slightly different in that the tallest part of the crutch is a cuff that wraps around the proximal arm. These crutches provide less stability than axillary crutches and are usually fitted for those with long term disabilities.
A rolling walker will be for clients that can't lift a standard walker because of upper extremity weakness or poor balance. The hand grip should be the same as the cane, in line with the ulnar styloid, wrist crease, or the greater trochanter. The elbow should still be flexed 20-30 degrees with relaxed shoulders.
The platform walker comes into play when the client cannot bear weight through their wrist or hand. This assistive device has a platform attached to the walker which allows support for the client's forearm. Make sure the client is standing up straight and then have them bend their elbow to 90 degrees or a right angle.
For all of these devices, it is important to consider the placement of the device in relation to the individual. If it is too far forward, there will be poor body mechanics and posture, as well as the increase chance of slipping. If it is too close to the client, then it will limit movement. There are obviously many things to consider when fitting an assistive device, but a correct fit can really improve someone's quality of life.


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