EXOS Short Arm Fracture Brace (Open Thumb) with BOA — Cast Splint for Wrist & Forearm Support
The DonJoy (DJO Global) EXOS Short Arm Fracture Brace is designed to support and protect against fractures and injuries to the wrist and forearm. It features the BOA® adjustable closure system for micro-adjustable circumferential control and a reformable shell that can be heat-molded for a more custom fit.
Quick Highlights
- Thermoformable (heat-moldable) for improved comfort and contour
- BOA dial provides precise tightening/loosening (helps accommodate swelling changes)
- Water-resistant and easy to clean
- Radiolucent material (often allows imaging without removal, per clinical protocol)
- Open-thumb design helps comfort and motion while maintaining stability
- Left or Right options
- ONLY AVAILABLE IN BLACK
Sizing & Fit (Important)
Wrap the tape loosely around your hand to measure your size and compare it to the chart below. Upsizing is recommended if you measure between sizes or prefer a looser fit. This item is often returned for being too small — it's usually better to go with the bigger size because it can be molded to fit.
| Size | Hand Circumference | Brace Length | Left Part # | Right Part # |
|---|---|---|---|---|
| XS | 7¼" – < 8" | 8½" | 312-31-1111 | 312-32-1111 |
| S | 8" – < 9" | 9½" | 312-41-1111 | 312-42-1111 |
| M | 9" – < 10" | 10½" | 312-51-1111 | 312-52-1111 |
| L | 10" – < 11" | 11" | 312-61-1111 | 312-62-1111 |
| XL | 11"+ | 12" | 312-71-1111 | 312-72-1111 |
Heating (Required for Best Fit)
Important: Your brace needs to be heated to fit properly. Please watch this video on how to heat the brace.
Heating & Application (Important)
EXOS is not a conventional pre-shaped ready-to-wear brace. The thermoformable shell is designed to be heated first and then molded around your anatomy. Do not judge the fit before heating.
Once an EXOS brace has been heated, molded, worn, or altered, it is no longer eligible for return. If you are unsure about what you received, contact us before heating.
Important: This brace must be heated to properly mold for best fit. Watch the videos below before fitting.
| Requirement | Manufacturer Specification |
|---|---|
| Ideal Temperature | 200°F (93°C) |
| Maximum Safe Temperature | 212°F (100°C) |
| Heating Time | Approximately 3–5 minutes |
| Working Time | 3–8 minutes before it hardens |
| Heating Method | Convection oven or hair dryer (for small adjustments) |
| Warning | Never use a microwave or high-heat industrial heat guns. |
Important: EXOS braces are intended to be fitted and remolded by trained medical professionals. Heating/molding performed outside medical guidance may affect fit, safety, and warranty coverage. Many have successfully heated these items on their own using a home oven and wrapping the brace in a damp towel, but we cannot cover this under warranty if it is not done by a trained medical professional.
Alternative Home Heating Method — Controlled Water Bath
For users who do not have access to an EXOS oven, OrthoTape has developed a controlled hot-water bath alternative. This is not an Enovis-published protocol and is performed at the user's own risk. Suggested water temperature: 160°F–170°F (71°C–77°C); do not exceed 180°F (82°C).
Product Features
REFORMABLE
• Comfortable, dry application
• Ability to thermoform for a customizable fit
• One brace throughout treatment minimizing material waste
WATER-RESISTANT
• Patients can continue daily activities, such as showering and swimming
• Athletes can remain active
ADJUSTABLE & LIGHTWEIGHT
• BOA Fit System is micro-adjustable for easy application
• Helps accommodate swelling and atrophy
• Openings at the base of the thumb (thenar eminence) and across the palmar crease allow range of motion and comfort without loss of stability
• Detachable nylon strap across the web space provides comfortable, adjustable control
LOCKABLE
• Compatible with BOA Locking Ring Kit (ideal for children and less compliant patients)
EASY TO CLEAN
• Hand wash and dry (hair dryer suggested)
• Treated with antimicrobial material that reduces odors
- Heat to 200°F (93°C) for ~3–4 minutes (until pliable, not too hot to handle).
- Do not fully tighten BOA until brace returns to room temperature (helps prevent indentations).
- Do not overtighten—excessive pressure can irritate skin.
Important Statement (Purchase & Returns)
By purchasing an EXOS brace or any of its accessories, you acknowledge that you are either a qualified orthopedic technician or currently under the supervision of an orthopedic medical provider who has prescribed an EXOS product directly to you. You must read and carefully follow the manufacturer's directions provided with the unit. The end-user assumes all responsibility for using or misusing the item purchased. OrthoTape.com is only a distributor of the product and is not responsible for injury due to malfunction, misuse, inappropriate application, or other reasons.
Authorized Dealer | Authentic Product Quality Guaranteed
We try to get this item out of the warehouse quickly. Especially since we know you need it urgently. However, there may be a 1–2 business day delay before the item ships even if you pay Next Day or 2nd Day Air. Please plan accordingly.
Frequently Asked Questions
How do I choose the correct EXOS Short Arm Fracture Brace size?
Measure hand circumference around the knuckles (excluding the thumb) and compare to the official chart. If you are between sizes or expect swelling, sizing up is typically best.
Why does the brace feel too big or too small even when I picked the correct size?
EXOS sizing is a range, not a perfect shoe-like fit. If you measure near the bottom of the range it may feel roomier; near the top it can feel tighter. The brace is designed to be heat-molded to fine-tune comfort and fit.
Does the EXOS brace need to be heated?
Yes — proper heating and molding helps achieve the intended fit and support. EXOS braces are intended to be fitted and remolded by trained medical professionals using the recommended EXOS oven.
Can I heat the EXOS brace at home without an EXOS oven?
Yes. OrthoTape has developed a controlled hot-water bath alternative for users who do not have access to an EXOS dry-heat oven. The suggested water temperature range is 160°F–170°F (71°C–77°C) — do not exceed 180°F (82°C). This is not an Enovis-published or Enovis-validated water-bath protocol and is performed at the user's own risk. For full step-by-step instructions, equipment list, safety warnings, and photos, see the EXOS Brace Fitting & Heating Guide.
Does insurance cover this? Can I save vs. my doctor's office?
This product is HSA/FSA eligible, so you can use pre-tax dollars to purchase it directly. If you have a high DME deductible (common with many insurance plans), you may actually pay less buying here than at your doctor's office — where the same brace can cost $300–$500 or more. Many clinics also allow you to choose where you purchase your DME items. We recommend checking your plan's DME deductible before purchasing through your provider.