Description
Mallet Finger Stack Splint
When the tendon at the tip of your finger is damaged, keeping that joint straight and still is one of the most important things you can do during recovery. A drooping fingertip — one that won’t lift on its own — is one of the clearest signs of mallet finger, and a stack splint is the device most commonly recommended to manage it.
This mallet finger stack splint is designed to hold your fingertip in an extended, neutral position throughout the healing period. It comes as a set of eight sizes, so you can find the fit that works best for your finger without guessing.
This description is for general educational purposes only and is not medical advice. Always consult a qualified healthcare professional for diagnosis and treatment of any finger injury.
What Is a Mallet Finger Stack Splint?
A stack splint — also referred to as a stack finger splint or fingertip splint — is a small, shaped support device that fits over the end of your finger. It immobilizes the distal interphalangeal (DIP) joint, the joint closest to your fingertip, while leaving the rest of your finger free to move.
The name comes from the way the device “stacks” over the fingertip, holding it flat. The design is intentionally simple: a firm curved shell that keeps the fingertip in one position, consistently, for as long as it is worn.
For mallet finger injuries specifically, this type of immobilization is important. The extensor tendon — the tendon responsible for lifting your fingertip — needs to remain in a resting, straight position in order to heal. Any bending of the DIP joint, even briefly, can disrupt that process.
You can read more about mallet finger and its management in our dedicated guide: Mallet Finger Splint — Types, Usage, and Recovery
Understanding Mallet Finger
Mallet finger occurs when the extensor tendon at the end of the finger is stretched or torn, usually as a result of a sudden impact — a ball striking the fingertip, a jamming injury during sport, or catching the finger on an object. The fingertip droops downward and cannot be actively straightened.
If left unsupported, the tendon may not heal in the correct position, which can lead to lasting stiffness, a permanent droop, or reduced function in the finger. Many clinicians recommend continuous splinting for several weeks as part of conservative management.
The key word is continuous. Removing the splint — even for a short time — can allow the tendon to stretch again and restart the healing countdown. This is one reason why finding a well-fitting, comfortable splint matters so much: a splint you can actually tolerate wearing consistently is more effective than one you remove because it causes discomfort.
For authoritative clinical guidance on mallet finger treatment, the American Society for Surgery of the Hand (ASSH) provides resources for both patients and clinicians.
Product Features
Holds the DIP joint in the correct extended position
This stack finger splint is shaped to keep your fingertip flat and straight. The design limits movement at the DIP joint while allowing normal movement at the middle and base of the finger.
Slim, low-profile construction
The splint sits close to the finger without adding significant bulk. This makes everyday tasks — typing, writing, and light handling — more manageable while the splint is in place.
Ventilated design for extended wear
Small openings in the body of the splint allow some air circulation around the skin. This helps reduce moisture buildup, which is particularly useful when wearing the splint continuously over several weeks.
Smooth, skin-friendly material
The splint is made from a firm, durable material with smooth edges. It is designed to be worn against the skin for extended periods without causing irritation or pressure sores when properly fitted.
Set of eight sizes
Fit is critical with any immobilization splint. Too loose, and the joint can still move; too tight, and the splint may restrict circulation or cause discomfort that leads to inconsistent use. This set includes eight sizes to help you identify the most appropriate fit for your specific finger. When in doubt between two sizes, try both and choose the one that holds the fingertip firmly without any numbness, tingling, or visible marks on the skin.
Who This Product May Be Suitable For
This mallet finger stack splint may be appropriate if you are:
- Managing a mallet finger injury and have been advised to use a splint as part of your recovery
- Protecting a healing tendon injury at the fingertip during daily activities
- Returning to light sport or work and require continued fingertip protection during recovery
- An occupational therapist, hand therapist, or physical therapist sourcing splints for patient use
This product is not a substitute for professional medical assessment. If your fingertip is significantly deformed, the injury is not improving after consistent splinting, or you experience numbness, increasing pain, or signs of infection, seek medical attention promptly rather than continuing to self-manage.
How to Use
Slide the splint carefully over your fingertip, ensuring the DIP joint sits fully inside the device in a flat, extended position. The splint should feel snug. If you notice numbness, tingling, or persistent pressure marks on the skin, try the next size up.
Wear the splint continuously as directed by your healthcare professional. Do not remove it to check progress, shower without a plan, or take short breaks — consistency is what allows the tendon to heal.
Cleaning: Use the swap technique. Keep your fingertip straight on a flat, hard surface. Carefully slide the splint off while keeping your finger completely still. Clean and fully dry both the splint and your skin, then replace the splint before lifting your finger. Never allow the fingertip to bend during this process, even for a moment.
Sizing
Measure around the widest point of your fingertip, just below the nail bed, using a soft tape measure or a narrow strip of paper. Match your measurement to the size guide included in the packaging. When two sizes seem close, choose the smaller one first — if it causes any discomfort or marks after a few minutes, move to the larger.
Related Products
Depending on your injury and stage of recovery, the following products may also be relevant:
- Mallet Finger Splint — full category page with additional splint options for mallet finger
- Distal Phalanx Fracture Splint — for fingertip fractures requiring rigid immobilization
- Finger Brace — broader support options for finger and hand injuries
- Finger Exerciser — rehabilitation tools to support grip strength and mobility after the immobilization phase ends
- Finger Sleeves — lightweight compression and protection suitable during the later stages of recovery
What Is Included
Each order includes eight stack finger splints across a range of sizes. Having the full set available means you can refit as swelling changes during recovery, and keep a spare on hand if the primary splint needs cleaning.
A Note on Recovery
Every finger injury is different. Healing times vary depending on the severity of the tendon damage, how quickly treatment begins, and how consistently the splint is worn. A stack splint supports the conditions for recovery, but results depend on many individual factors.
If you are unsure whether this product is suitable for your injury, we encourage you to speak with a hand therapist, occupational therapist, or orthopedic specialist before use.
This content is for general educational purposes only and is not medical advice. FingerTipSplint does not diagnose, treat, or prescribe. For any serious, worsening, or persistent injury, please consult a qualified healthcare professional.
Reviews
There are no reviews yet.