The Club Physio on Instagram: "How to strap for a mallet finger Mallet finger is an injury to the tip of your finger that causes it to droop downward, making your finger look like a mallet. It happens when you injure the extensor tendon that extends the tip of your finger (terminal extensor). If this tendon gets torn, cut or displaced, it won’t be able to pull your finger joint straight. Here we are using 25mm rigid tape which we have torn in half. You can also use 12.5mm Rigid tape available @s