A single crutch goes on the side opposite your injured or recovering leg. This feels counterintuitive to most people, who instinctively want to support the weak side directly, but the opposite placement is what actually reduces the load on your healing leg and keeps your gait balanced. Getting this one detail right matters more than anything else when using a single crutch.
Why the Crutch Goes on the Opposite Side
When you walk normally, your body naturally swings each arm forward with the opposite leg. Your left arm swings forward when your right leg steps, and vice versa. A single crutch on the opposite side of your injury preserves this natural cross-body pattern, keeping your torso level and your weight evenly distributed.
If you place the crutch on the same side as your injured leg, your body has to compensate by leaning awkwardly with each step. This throws off your center of gravity and can lead to hip pain, back strain, or a limping pattern that’s hard to unlearn later. It may feel more natural to “prop up” the bad side directly, but resist that urge.
How to Set the Right Height
Before you start walking, the crutch needs to fit your body. Stand upright with your arms relaxed at your sides and shoes on. There should be about a two-inch gap between the top of the crutch pad and your armpit. The handgrip should sit at a height where your elbow bends to roughly 30 degrees when you grip it.
That armpit gap is critical. If the crutch presses up into your armpit while you walk, it can compress the nerves and blood vessels that run through that area, causing numbness, tingling, or even temporary loss of grip strength in your hand. Your weight should always go through your hands and arms, never through your armpits.
The Walking Sequence Step by Step
Once the crutch is sized and on the correct side, the walking pattern is straightforward:
- Step 1: Move the crutch and your injured leg forward at the same time. They land together, roughly even with each other.
- Step 2: Press down through the crutch handgrip to support your weight, then step your healthy leg through and past the crutch.
- Step 3: Repeat. Crutch and injured leg move together, then the healthy leg steps through.
Keep your steps relatively short and even. Taking long strides throws off your balance and forces you to lean harder on the crutch. Look ahead of you, not down at your feet. Your posture should stay as upright as possible, with your core engaged to stabilize your trunk.
How to Handle Stairs
Stairs require a different approach depending on whether you’re going up or down. The classic memory aid is “up with the good, down with the bad.”
Going up: If there’s a handrail, use it. Hold the crutch in your other hand. Step up onto the stair with your good leg first, pressing through the handrail (or crutch) for support. Then bring the crutch and your injured leg up to the same step. Don’t try to skip steps or rush.
Going down: Place the crutch down onto the next step first, keeping your injured leg out slightly in front of you. Then lower your good leg down to that same step while pressing through the crutch for support. Each step should feel controlled, not like a drop.
If you have a handrail available, always use it. It provides far more stability than the crutch alone, especially on descent. Switch the crutch to whichever hand isn’t holding the rail.
Sitting Down and Standing Up
To sit, back up to the chair until you feel it against the back of your legs. Transfer the crutch to the hand on your injured side (just temporarily), reach back with your free hand to feel the armrest or seat, and lower yourself slowly. Keep your injured leg slightly extended in front of you if needed.
To stand, scoot to the front edge of the chair. Place the crutch in the hand opposite your injury, push up from the armrest with your other hand, and stand on your good leg first. Get your balance before you start walking. Rushing this transition is one of the easiest ways to stumble.
Common Mistakes to Avoid
The most common error, worth repeating, is putting the crutch on the wrong side. Using it on the same side as your healing leg changes your walking pattern and can cause hip or back pain that outlasts the original injury.
Leaning on the armpit pad is the second most frequent problem. All your weight should transfer through your hands gripping the handgrip. If your armpits feel sore after using the crutch, you’re resting on the pad instead of pressing through your palms.
Other mistakes to watch for: taking steps that are too long, looking down at the ground instead of ahead, and gripping the handle so tightly that your hand cramps. A firm but relaxed grip is enough. Also check the rubber tip on the bottom of the crutch periodically. If it’s worn smooth, cracked, or missing its tread pattern, replace it before you use the crutch on any hard or wet surface. A worn tip on tile or linoleum is a fall waiting to happen.
When You’re Ready for One Crutch
Most people transition to a single crutch after starting with two crutches or a walker. The shift typically happens when you can bear partial weight on your recovering leg and your balance feels stable enough to manage with less support. You should be able to walk with a fairly smooth, even gait on the single crutch. If you find yourself lurching or heavily favoring one side, you may not be ready to drop down to one yet.
A single crutch is a bridge between full support and walking independently. It’s meant to take some of the load off your healing leg, not all of it. If you’re still unable to put any weight on your injured side, two crutches or a walker is the safer choice until your recovery progresses.