Splinting a finger keeps an injured joint still so it can heal, and in most cases you can do it at home with simple supplies. The two most common methods are buddy taping (strapping the injured finger to an adjacent healthy one) and using a rigid splint made of metal, plastic, or even an improvised stiff material like a popsicle stick. Which method you choose depends on the type and severity of the injury.
Before you splint anything, though, you need to rule out injuries that require professional care. If your finger looks visibly crooked or deformed, if the skin is broken over the injury, if the fingertip has no feeling or has turned white or blue, or if you can’t bend or straighten it at all, go to an emergency room or urgent care. Injuries involving the thumb, or more than one finger at a time, also need medical evaluation.
What You Need
For buddy taping, you need medical tape (paper tape or cloth athletic tape both work), thin gauze or cotton padding, and scissors. For a rigid splint, you need a small, stiff object to act as the splint itself, soft padding to cushion the finger, and tape or a small elastic bandage to hold it in place. Drugstores sell pre-made finger splints in aluminum or plastic that come with built-in foam padding and Velcro straps, which are the easiest option.
If you don’t have a commercial splint, a popsicle stick, tongue depressor, or even a sturdy pen can work in a pinch. The key is that it’s rigid enough to prevent the joint from bending and long enough to extend past the joints on either side of the injury.
How to Buddy Tape a Finger
Buddy taping works well for mild sprains, jammed fingers, and minor fractures that don’t need a rigid splint. The uninjured finger next to yours acts as a natural splint. Tape your injured finger to the finger beside it that’s closest in size, usually the one directly next to it.
Start by placing a small piece of gauze or cotton padding between the two fingers. This prevents moisture from building up where the skin touches, which can cause the skin to turn white, soggy, and break down over time. Make sure the padding lies flat with no folds or bunching.
Apply two strips of tape. Place the first strip between the big knuckle (where the finger meets the hand) and the first finger joint, wrapping it snugly around both fingers. Place the second strip between the first and second finger joints, closer to the fingertip. Leave all three joints uncovered so the fingers can still bend and straighten. This is important: taping over the joints restricts movement and can lead to stiffness during healing.
The tape should be firm enough that the injured finger can’t move sideways, but loose enough that circulation isn’t restricted. After taping, check that the fingertip still has normal color and feeling.
How to Apply a Rigid Splint
A rigid splint is better for more significant injuries, particularly when you need the finger completely still. If you’re using a pre-made aluminum or plastic finger splint, mold it gently to fit the natural curve of your finger before strapping it on.
Position your finger with a slight bend, not completely straight. For most injuries, a gentle 20 to 30 degree curve at the middle joint is the safest resting position. Splinting a finger completely flat and rigid can cause lasting stiffness once the splint comes off. The exception is a mallet finger injury (where the fingertip droops and you can’t straighten it on your own), which requires the last joint held perfectly straight.
Wrap a thin layer of padding around the finger first. Then place the rigid material along the underside (palm side) of the finger, extending from just past the fingertip to a point below the injured joint. Secure it with tape or a small elastic bandage, wrapping from fingertip toward the hand. Overlap each wrap by about half its width, and don’t pull tight. If you’re using tape, two or three strips spaced along the length of the splint are enough.
Checking Circulation
After applying any splint or tape, test the blood flow to your fingertip. Press down on the fingernail until it turns white, then release. The pink color should return within two seconds. If it takes longer, or if the fingertip feels numb, tingly, cold, or looks pale or blue, the splint is too tight and needs to be loosened immediately.
Repeat this check a few times over the first hour, and again any time you rewrap or adjust the splint. Swelling can increase in the hours after an injury, which means a splint that felt fine initially can become too tight later.
Skin Care While Splinted
Moisture is the biggest threat to skin under a splint. Sweat, water from handwashing, or just humidity can make the skin soft and fragile if padding stays damp for too long. Replace the gauze or padding between buddy-taped fingers daily, or more often if it feels damp. When you change the padding, let the skin air-dry for a few minutes before reapplying fresh material.
For rigid splints, briefly remove the splint once a day (if your injury allows it) to wash and dry the skin underneath. Avoid soaking the hand. If your doctor has told you the splint must stay on continuously, as with a mallet finger injury, keep the finger supported on a flat surface while you change the padding, and never let the injured joint bend during the process.
How Long to Wear a Splint
A mild jammed finger or minor sprain typically heals in one to two weeks with buddy taping or light splinting. More severe sprains can take three to six weeks, and the finger may stay swollen and tender well beyond that.
Mallet finger injuries, where the tendon that straightens the fingertip is damaged, require the most discipline. If the tendon is stretched but not torn, you’ll need to wear a splint continuously for four to six weeks. If the tendon is torn or pulled away from the bone, continuous splinting lasts six to eight weeks, followed by another three to four weeks of wearing the splint at night only. Removing the splint too early, even briefly, can reset the healing clock.
For any finger injury that isn’t clearly improving after a week, or that gets worse at any point, an X-ray can rule out a fracture you might have missed. Fractures don’t always cause dramatic pain or swelling, and some require a specific type of splint or even surgical repair to heal correctly.
Preventing Stiffness After Removal
Stiffness is one of the most common problems after finger splinting, especially if the finger was immobilized for several weeks. Once the splint comes off, gentle range-of-motion exercises help restore flexibility. Slowly bend and straighten the finger as far as it will comfortably go, and repeat this several times a day. Squeezing a soft ball or rolling a pencil under your fingers on a table can also help.
Expect the finger to feel tight and weak at first. Full strength and flexibility can take several more weeks to return after the splint is removed, particularly for injuries that required long immobilization periods. If the finger remains significantly stiff after a few weeks of gentle exercise, a hand therapist can provide targeted stretches and exercises to speed recovery.