How to Improvise an Emergency Arm Sling in Under 2 Minutes

An unexpected shoulder or arm injury can happen anywhere—on a remote hiking trail, during a backyard pickup game, or while doing home repairs. If you or someone else has suffered a sprain, dislocation, or fracture, keeping the arm immobilized is critical to preventing further damage and reducing pain. If you don't have a professional medical sling, you can easily improvise a highly effective, supportive arm sling in under two minutes using a standard long-sleeve shirt, sweater, or even a basic T-shirt. Here is how to do it step-by-step.

Step 1: Position the Injured Arm Safely

Before preparing the sling, you must position the injured arm correctly to minimize pain and avoid worsening the injury. Gently bend the injured arm at the elbow, forming a 90-degree angle (an L-shape). Instruct the injured person to rest their forearm flat across their chest, with their hand pointing toward the opposite shoulder. Ideally, the hand should be slightly higher than the elbow to help reduce swelling.

Step 2: Choose Your Improvised Sling Material

A long-sleeve button-down shirt, flannel, sweatshirt, or knit sweater works best because the sleeves provide built-in straps. If you only have a short-sleeve T-shirt, you can still make it work (see the alternative method in Step 4). Ensure the fabric is clean and free of sharp items like keys or pens in the pockets.

Step 3: Apply the Long-Sleeve "Hammock" Method

This is the most secure and comfortable way to support the arm using a spare long-sleeve garment:

• Position the fabric: Lay the body of the shirt flat against the person's chest, underneath their injured forearm. The bottom hem of the shirt should face toward their waist.
• Cradle the arm: Fold the bottom half of the shirt upward over the forearm, enveloping it in a supportive "hammock" or pocket. The elbow should be securely nestled in the closed corner of the fold.
• Tie the sleeves: Take the two sleeves of the shirt. Bring one sleeve up over the uninjured shoulder and the other sleeve around the back of the neck on the injured side.
• Secure the knot: Tie the two sleeves together at the side of the neck using a secure double knot (like a square knot). Avoid tying the knot directly over the spine at the back of the neck, as this can cause painful pressure points.

Step 4: Alternative Method Using a Short-Sleeve T-Shirt

If you only have a short-sleeve T-shirt, you can use the "Hem-Up" method. This is ideal if the injured person is already wearing the T-shirt and you don't want to remove it:

• Fold the hem: Take the bottom hem of the T-shirt the person is wearing and fold it straight up over their injured forearm (which is bent across their chest).
• Secure with safety pins: Pin the hem securely to the chest area of the T-shirt using two or three safety pins.
• The "No-Pin" alternative: If you don't have safety pins, slide the injured arm inside the body of the T-shirt, through the bottom opening. Pull the bottom hem up over the arm, and tuck the fabric tightly under the armpit of the uninjured side to wedge it in place.

Step 5: Check Support and Circulation

Once the sling is secure, perform these critical safety checks to ensure it is helping rather than hurting:

• Check the wrist: Ensure the sling supports the entire forearm, including the wrist. If the wrist hangs out and droops, it will strain the arm and cause pain.
• Verify circulation: Lightly pinch one of the fingernails on the injured arm for two seconds, then release. The nail should turn white, then pink again within two seconds. If it stays white or blue, or if the fingers feel cold or numb, the sling is too tight and must be loosened immediately.
• Keep the thumb up: The hand should be positioned so the thumb points toward the ceiling. This maintains the natural alignment of the wrist and forearm bones.