EXOS Radial Gutter Fracture Brace with BOA — Cast Splint for 2nd & 3rd Metacarpal Fractures
A reformable, water-resistant fracture brace (cast splint alternative) designed to stabilize the 2nd and/or 3rd metacarpal (MC) bones and the respective metacarpophalangeal (MCP) joints of the hand. Ideal for metacarpal fractures when immobilization is prescribed.
Why clinicians choose EXOS for radial gutter immobilization
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Thermoformable / remoldable for a custom fit during swelling changes
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BOA Fit System for micro-adjustable compression and quick on/off
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Radial gutter design supports 2nd/3rd digits and helps position MCP joints for stability
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Water-resistant & easy to clean (hand wash / dry; hair dryer is commonly used for drying)
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Radiolucent material (often allows imaging without removal, per clinical protocol)
- Not made with natural rubber latex
Indications
- Fractures of the 2nd and/or 3rd metacarpal (MC) bones
- Injuries to the respective metacarpophalangeal (MCP) joints
- Injuries requiring radial gutter immobilization per provider direction
Key Features & Benefits
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Thermoform and custom mold to the patient's extremity for a more comfortable fit
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Full hook-and-loop release ribbon allows for easier and more comfortable application, removal, and reapplication
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Dorsal hook-and-loop secure tab helps secure the overlapping (top) portion of brace for better stability
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Hook-and-loop straps across the web space and around the 2nd and 3rd digits can be attached anywhere to the surface for better stability and comfort
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Finger section can be trimmed (as directed by the physician) to accommodate desired range of motion
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BOA® Fit System provides quick adjustment in circumferential compression
Sizing & Fit (Important)
Measure first. Wrap a flexible tape loosely around the widest part of your hand (around the knuckles, excluding the thumb), then match your measurement below. If you’re between sizes or want a roomier fit, size up.
How to measure
EXOS Radial Gutter Fracture Brace (BOA) — Size Chart
XS (X-Small)
Hand circumference
7¼" – < 8" (18.4 – < 20.3 cm)
Brace length
11½" (29.2 cm)
Left / Right part #
326-31-1111 / 326-32-1111
S (Small)
Hand circumference
8" – < 9" (20.3 – < 22.9 cm)
Brace length
12¼" (31.1 cm)
Left / Right part #
326-41-1111 / 326-42-1111
M (Medium)
Hand circumference
9" – < 10" (22.9 – < 25.4 cm)
Brace length
13½" (34.3 cm)
Left / Right part #
326-51-1111 / 326-52-1111
L (Large)
Hand circumference
10" – < 11" (25.4 – < 27.9 cm)
Brace length
14¾" (37.5 cm)
Left / Right part #
326-61-1111 / 326-62-1111
XL (X-Large)
Hand circumference
11"+ (27.9 cm+)
Brace length
15¼" (38.7 cm)
Left / Right part #
326-71-1111 / 326-72-1111
Fit tip: EXOS braces are heat-moldable—slightly larger can often be molded for comfort, while a too-small brace may not fit safely.
Heating & Application (Important)
Important: This brace must be heated to properly mold for best fit. Watch the videos below before fitting.
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, but we cannot cover this under warranty if it is not done by a trained medical professional.
Instructions
Professional Use + Warranty Note
EXOS products are intended to be fitted and molded by trained medical professionals (or under medical supervision). Heating/molding performed outside medical guidance may affect fit, safety, and warranty coverage.
By purchasing an EXOS brace or accessory, 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 to you, and that the end-user assumes responsibility for proper use.
Shipping Note
We try to ship quickly because we know you may need this urgently. There may be a 1–2 business day delay before the item leaves the warehouse, even if expedited shipping is selected. Please plan accordingly.
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