How to Size a Finger Splint

Finger splints can be anything from a makeshift DIY splint you make out of Popsicle sticks and medical tape to a modified contraption you buy from a drugstore or medical supplies office. No matter what type of splint your buy, the most important thing is getting the correct size. A splint that is too small can disrupt circulation, causing discomfort, slowing down the healing process and even permanently damaging nerves. A splint that is too large won't protect your finger against further damage and could cause it to heal incorrectly.

Instructions

• 1

  Determine the sizing method for the brand you are purchasing. There are a lot of options available when it comes to finger splints, so it's important that you read the sizing instructions on the package to see if the measurements are for joint circumference of finger length. These are too very different numbers, so be sure you read carefully.

• 2

  Measure the circumference of your finger joint. If a finger splint is sized according to joint circumference, it will almost always be asking for the circumference of the distal interphalangeal joint (DIP). This is the first joint down from your finger tip. Use a fabric measuring tape to measure the circumference. If you do not have a fabric measuring tape, use a small piece of paper, mark it, and then measure with a ruler.

• 3

  Measure the length of your finger. The majority of finger splints are made to be adjustable with a padded metal strip that is held together by a rubber joint or medical tape. For these types of finger splints, you'll want to measure the length of the finger. The most important thing to remember when sizing adjustable splints is that they aren't too long, because they will irritate the webs between your fingers or too short, allowing the finger to bend and heel incorrectly. Use a ruler or fabric measuring tape to measure from the center of your proximal phalanx, the third section of bone closest to your hand.

• 4

  Measuring for a mallet finger splint. Mallet finger is an injury to the top extension of the finger and occurs when the extensor digitorum tendon is ruptured, usually from jamming the finger. The localized injury requires a slightly more modified splint. Use a fabric measuring tape to measure the length of the finger from the proximal interphalangeal joint---the knuckle closest to the hand---and the width of the widest part of your finger.

• 5

  Understand universal sizing. Since many finger splints are flexible, versatile and adjustable, you will often run into universal sizing methods, like small, medium and large. In this case, you will need to follow the sizing instructions listed on the package. If you're making your purchase online, look for sizing instructions in the product overview section.