A baseball splint is a U-shaped or extended orthopedic device made from malleable aluminum with foam padding that immobilizes an injured finger in an extended (straight) position. It is used to protect and stabilize finger fractures and ligament or tendon injuries, particularly those at the fingertip.
General Specifications
- Intended Use: Primarily used to stabilize the distal phalanx and interphalangeal (DIP and PIP) joints for fractures, sprains, ligament/tendon injuries (such as mallet finger), and burns.
- Design:
- Shape: U-shaped or an extended design that covers the palmar (palm) side and sides of the finger. The end often folds over the fingertip for extra protection.
- Versatility: Most designs are universal and can be used on any finger of either the left or right hand.
- Target User: Available in various sizes to accommodate both adults and children.
- Weight: Extremely lightweight, with some models weighing as little as 10 to 40 grams.
Materials & Construction
- Supportive Elements: The core structure is made of malleable, yet rigid, aluminum alloy. This allows the splint to be easily bent and shaped by a healthcare professional for a custom, secure fit.
- Lining: The inner surface is lined with a soft, closed-cell foam padding, such as EVA (Ethafoam), for comfort, cushioning, and to prevent skin irritation during extended wear.
- Fasteners: Many models include an integrated hook-and-loop (Velcro) strap to secure the splint in place without the need for additional tape.
Key Features
- Effective Immobilization: Provides robust, firm support to hold the injured finger in an extended position, crucial for proper healing.
- Protection: The design protects the injured fingertip from accidental impacts or further damage.
- Hygiene: The materials are often resistant to fluids and easy to clean, allowing for proper hygiene during the recovery process.
- Functional Mobility: While stabilizing the injured finger, the design ensures that the remaining fingers have a full range of motion, allowing for most daily activities.


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