The modern fiberglass replacement for the traditional plaster stirrup ankle splint. If you've been searching for a plaster stirrup ankle splint, plaster ankle splint, plaster U splint, or ankle plaster cast — this is the upgraded fiberglass version that clinicians now use instead. Same U-shaped lateral ankle immobilization. Lighter weight. Faster setting. More durable than plaster.
This complete professional-grade kit includes pre-padded synthetic fiberglass splint material, self-adhesive bandages, and synthetic padding for quick, effective treatment of ankle sprains, fractures, and post-operative care — with no additional materials needed. Sets in just 5–7 minutes.
The stirrup splint — sometimes called a plaster stirrup splint, plaster U splint, or lateral ankle plaster splint in older clinical terminology — prevents inward and outward movement at the ankle (inversion and eversion). A stirrup ankle splint fits around the sides of the lower leg and foot like a stirrup, providing excellent lateral stability.
The posterior ankle splint keeps the ankle at a 90-degree angle and goes on the back of the leg. Sometimes, the posterior splint and stirrup splint are applied together for even more comprehensive support. Historically made from plaster of Paris, modern clinical practice has shifted to fiberglass — which sets faster, weighs significantly less, and is far more durable.
| Stirrup U-Ankle Size | Pre-Cut Splint Dimensions* | Self-Adhesive Bandage | Synthetic Padding |
|---|---|---|---|
| Child 6–12 | 3 in × 35 in | 2 Rolls 3" | 1 Roll 2" |
| Teen 13–17 | 4 in × 30 in | 2 Rolls 3" | 1 Roll 3" |
| Adult 18+ | 5 in × 30 in | 2 Rolls 3" | 1 Roll 4" |
* Trim the splint to the correct length for the individual patient.
Purchasing your ankle splint kit directly from OrthoTape offers significant advantages over getting it at your doctor's office or emergency room. Emergency room splint applications can cost $200–500 or more when billed through insurance, while our complete kit costs a fraction of that. Our splint materials are the same professional-grade products — if not better — than what your doctor or ER uses, meeting or exceeding all industry standards.
Many medical offices have limited inventory and may only stock basic white bandages, while we offer multiple color options. By ordering from us, you get exactly what you need at a fraction of the cost, with fast shipping directly to your door.
| Splint Kit | Best For |
|---|---|
| Posterior Ankle Splint Kit | Ankle fractures & sprains (posterior support) |
| Posterior Knee Splint Kit | Knee fractures, sprains & post-op care |
| Volar Wrist Splint Kit | Wrist fractures & sprains |
| Volar/Dorsal Wrist Short Arm Splint Kit | Short arm immobilization |
| Sugar Tong / Reverse Sugar Tong Wrist Kit | Distal radius & Colles' fractures |
| Posterior Elbow Long Arm Splint Kit | Elbow fractures & dislocations |
| Ulnar Gutter Splint Kit | Boxer fractures (4th/5th metacarpal) |
| Thumb Spica Splint Kit | Thumb fractures & sprains |
→ View All Fiberglass Splint Kits
This product should be applied by a trained medical professional or for educational training. Always consult a doctor before use for proper diagnosis and treatment. Ankle injuries should be evaluated by a medical professional to rule out serious fractures or ligament damage.
