A Dupuytren’s night extension splint holds the fingers STRAIGHT overnight after surgery or needle release, to stop them drifting back into a bend while the tissue heals.
It’s usually a thermoplastic splint on the palm side, molded once the wounds allow, and worn at night for around three months.
The research is mixed. Some clinics splint everyone at night, others splint only if straightening starts to slip, and trials haven’t shown routine splinting is clearly better. The middle finger joint is the one most worth watching either way.
Why the fingers drift back
- Surgery removes or divides the tight cords, but the healing wound and scar contract as they mature. See Dupuytren’s surgery and needle release
- At night the hand curls into a loose fist for hours
- The middle joint is stubborn. It was often bent the longest before surgery, and its soft tissues have adapted to that position
- Scar tissue remodels for months, so the risk of losing straightening lasts well beyond the wound closing. See scar management
Surgery gets the finger straight. The following three months decide whether it stays that way.
The splint
- Hand-based or forearm-based palm-side splint, holding the treated fingers straight at the knuckles and middle joints
- Molded to a comfortable stretch, not forced to full straight over a fresh wound
- Remolded as the fingers straighten further, or if swelling changes the fit
- Only the fingers that need it are included, where possible
A typical pattern after open surgery
- Days 5 to 10: splint made once dressings are reduced. Worn at night. Gentle bending and straightening through the day
- Weeks 2 to 6: night wear continues. Scar massage starts once the wound has healed
- Weeks 6 to 12: night wear continues, or is weaned if straightening is holding well
- Beyond 3 months: restarted if the middle joint starts to bend again
After needle release, splinting is often shorter, with the same rule: wear it while straightening is at risk.
What goes with it
- Making a full fist every day, so the splint doesn’t cost you bending
- Scar massage and silicone, once the wound allows
- A Capener splint or serial casting during the day if the middle joint is losing ground
Get it checked if
- The wound opens, weeps or goes red
- Numbness in a finger after surgery that isn’t improving
- The splint presses on the scar or causes pain overnight
- Straightening is slipping back despite the splint
- Bending into a fist is getting worse
This is one of dozens of splints a hand therapist makes.
See what a hand therapist does for the full list.
Straight at night, a full fist by day, and watch the middle joint.
Every article on this site is written using the Closing Window Method: name the window your condition runs on, find where you are in it, and act while it’s still open.