A physical therapist can help you pick the right crutches and fit them appropriately. If you find you need to do this yourself, read on. This article reviews crutch sizes, how to adjust your crutches, and how crutch training can help you use these assistive devices.

How to Measure For Crutches

Buying crutches online can be a little complicated. Crutches are sometimes sold by the length of the crutch, while others go by the height of the person.

While it varies among manufacturers, crutches typically come in the following sizes:

ChildYouthAdultTall adult

To make sure you’re choosing the right one, all you will need is your height. Most manufacturers have size chart on their website that you can reference.

The size choice may be obvious (e.g., child size for a seven-year-old) or it may not. For example, a short adult may need a youth-sized crutch, while a tall teen may need an adult-sized crutch.

You can also measure for crutches using a cloth tape measure. With the person standing upright, measure from the armpit to the floor. Subtract 2 inches from the measurement to get the ideal crutch length.

(If you’re the one who needs the crutches, ask someone to help you with this so you get an accurate measurement.)

Adjusting Crutches to the Right Size 

Once you determine the appropriate size crutch, you will likely need to adjust them so the handgrip is in the appropriate location. Most underarm crutches are adjustable with a range of 6 to 8 inches.

Here are some basic guidelines to follow when adjusting your crutches:

The top of your crutches should be between 1 1/2 inches to 2 inches below your armpits while standing up straight. The handgrips of the crutches should be even with the top of your hips. There should be a slight bend in your elbows when you use the handgrips. Hold the top of the crutches against your sides and use your hands to absorb the weight. Do not press the top of the crutches into your armpits. This could result in damage to the nerves that run under your arms.

Start adjusting the crutch by height. Metal crutches are usually adjusted by pressing the buttons on both sides of the crutch.

Traditional wooden crutches use screw bolts and wing nuts or swivel nuts. To adjust these, first remove the nut then take the bolt out of the hole. There are typically two sets of bolts you will need to remove on each crutch. Adjust it to the proper height, then reinsert both sets of bolts and secure the nuts on.

Crutch Training Is Helpful

Before using crutches, it is important to be instructed by a healthcare professional as to how to properly use them. This should include proper crutch positioning and sizing. Being adequately fitted with a pair of crutches is important for safe crutch use as well as to prevent possible nerve damage in your arms or hands.

A solid crutch training session will focus on proper walking and weight bearing, practicing walking up and down stairs and walking up and over curbs and obstacles. Your physical therapist can ensure that you are safe while training on your crutches. Some doctors recommend you learn to walk on crutches before an elective lower extremity surgery.

Remember, there are different levels of weight bearing and different types of gait patterns that may be used with your crutches. By learning these types of crutch walking patterns, you can be sure to remain safe while walking with your crutches.

When You Only Need One Crutch

When walking with only one crutch, you should not need to make any changes to the crutch size or position. Typical progression from walking with crutches would be to walk with two crutches, one crutch, and then progress to walking with a cane.

When using one crutch or a cane, it is often used on the opposite side of your injury or weakness. You move it forward with your weak or injured leg, then follow with your good leg.