Proper Use of a Cane
Summary: 
If you have Avascular Necrosis / Osteonecrosis in a knee or hip, your doctor may suggest that you use a cane to lessen the weight that is borne on the affected leg. Also, use of a cane while walking can help provide support and stability. The maximum benefit can be derived if the cane is used properly, yet many people are not given much, if any, educational information.
 
Three basic elements comprise proper cane use:
  1. Selecting the appropriate cane for you
  2. Positioning of the cane
  3. Walking correctly with the cane
Detail: 
Selecting the Appropriate Cane for You
Make sure that your cane fits you properly. Many canes are adjustable but some are not. An adjustable cane is important if you plan to wear different styles (heights) of shoes.
 
"With your cane in your hand, the bend in your elbow should be about a 30-degree angle...With your arm hanging straight down at your side, the top of your cane should come up to the crease in your wrist. A cane that's too long will make you work harder to pick it up and move it. A cane that's too short may cause you to lean to one side, throwing you off balance."[1]  From the various styles of canes that are available, select a cane that provides you with good stability, and try various grips in order to find one that feels comfortable to you. Also, make sure that the tip of the cane is in good condition and that it is replaceable.
 
Positioning of the Cane
Hold your cane in the hand opposite the side of your affected leg. "...move the cane in unison with the affected leg. Each time you step with the affected leg, move the cane too, -- giving you support as you walk. When you step forward with the unaffected leg, keep the cane in place."[2]
 
Using mnemonics:
C ane
O pposite
A ffected
L eg
 
Walking Correctly With the Cane
When you walk, move the cane in unison with your affected leg so that the cane and your affected leg strike the ground at the same time. "To start, position your cane about one small stride ahead and step off on your injured leg...and the cane and your injured leg swing and strike the ground at the same time. Finish the step with your normal leg.[3]
 
"To climb stairs, grasp the handrail (if possible) and step up on your good leg first, with your cane in the hand opposite the injured leg. Then step up on the injured leg. To come down stairs, put your cane on the step first, then your injured leg, and finally the good leg, which carries your body weight."[4]
 
References
[1] "How to choose and use a cane", Mayo Clinic Staff, 2-14-07. Retrieved on 2009-04-02.
[2] Ibid.
[3] "How to Use Crutches, Canes, and Walkers",  American Academy of Orthopedic Surgeons. Retrieved on 2009-04-02.
[4] Ibid.
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