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Surgery Got the Finger Straight. Now the Scar Wants It Back.
After Dupuytren’s surgery, needle release or an enzyme injection, a night extension splint is usually worn every night for 3 to 6 months. It holds the treated fingers STRAIGHT while you sleep, so the healing scar can’t pull them back into a bend.
It’s a thermoplastic splint on the palm side of the hand, molded by a hand therapist once the wound allows, often within the first week or two. In the daytime it comes off, and the fingers work.
Here’s the problem.
For years the cord pulled your finger into a curl. Now it’s gone. But a healing palm scar contracts as it matures, and it pulls in exactly the same direction the cord did. At night the hand curls into a loose fist for 7 or 8 hours and lets it.
Lose 10 or 15 degrees in the first couple of months and you’ve quietly handed back a chunk of what the surgeon won. The middle joint of the finger is the one that slips first, and it’s the hardest to win back.
The night splint is the cheapest insurance you’ll buy for that operation.
(Still deciding whether you need treatment at all? Start with Dupuytren’s contracture. The timing rule is different from everything else on this site.)
Why do the fingers bend again after Dupuytren’s surgery?
- The scar contracts as it matures. Surgery removes or divides the tight cords, but the wound and the tissue under it shrink as they heal. See Dupuytren’s surgery and needle release recovery.
- At night the hand curls into a loose fist for hours. That’s the scar’s best opportunity.
- The middle joint is stubborn. It was often bent the longest before surgery, and the ligaments and capsule on its palm side have shortened into that bend.
- Scar tissue remodels for months, so the risk of losing straightness lasts well beyond the wound closing.
Surgery gets the finger straight. The following three months decide whether it stays that way.
How long do you wear a Dupuytren’s splint after surgery?
Usually every night for 3 to 6 months. Your surgeon or therapist may give you a different plan. Use theirs.
Honest note: 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 for everyone. Either way, the middle joint is the one most worth watching, and if it’s slipping, the splint goes on.
A typical pattern after open surgery (fasciectomy):
- Days 5 to 10: splint molded once the bulky dressings are reduced. Worn at night. Gentle bending and straightening through the day, as your surgeon allows.
- Weeks 2 to 6: stitches out around day 10 to 14. Night wear continues. Scar massage starts once the wound has fully closed. See scar management after hand surgery.
- Weeks 6 to 12: night wear continues. The splint is remolded if the finger has straightened further.
- Months 3 to 6: weaned, a few nights off at a time, IF straightening is holding on measurement. Restarted if the middle joint begins to bend again.
After a needle release or an enzyme injection, the splint usually starts within a day or two, and the same months-long night pattern follows. Some surgeons stop sooner if the finger holds straight. Same rule either way: wear it while straightness is at risk.
Which window are you in?
- OPEN: the first 3 months. The scar is still remodeling, and a night splint plus daily stretching can hold or even improve the straightness. This is where the work pays most.
- CLOSING: the finger is slipping. A middle joint that measured straighter at week 2 than at week 6 is losing ground. Act now: more splint hours, a daytime splint, sometimes casting. Not next appointment. Now.
- SHUT for the full correction: a middle joint that has re-stiffened over many months. The goal changes to keeping what’s left and making the hand useful, not straight.
What does the splint look like, and how should it fit?
- Palm-side, hand-based or forearm-based, 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. You should feel a gentle pull, not pain.
- Remolded as the fingers straighten further, or if swelling changes the fit.
- Only the fingers that need it are included, where possible.
- Straps snug, never across the wound. If a strap or edge presses on the scar, it needs adjusting.
If it wakes you with pain, it’s set too ambitious. A splint you rip off at 2am holds nothing. Get it eased rather than giving up on it.
Exercises that go with the splint
The splint protects straightening at night. Daytime exercises protect BENDING. The trade nobody warns you about is a finger that’s now straight but won’t curl into a full fist.
- Full fist and full straighten. Slowly, 10 reps, 4 to 6 times a day in the early weeks, as your surgeon allows.
- Middle joint straightening. Hold the knuckle flat on a table and straighten the middle joint as far as it goes. Hold 5 seconds, 10 reps, 3 to 4 times a day.
- Tendon glides. Hook fist, flat fist, full fist, back to straight. 10 rounds, 3 times a day. See can’t straighten a finger after surgery if the middle joint is lagging.
- Scar massage and silicone, once the wound has fully closed. Firm circles, a few minutes, several times a day.
If the middle joint is losing ground in the daytime too, a Capener splint or serial casting can be added.
Can I work, drive and use my hand normally?
The splint is for nights, so daytime is about the wound, not the splint.
- After needle release: light use within days.
- After open surgery: light use around 2 to 3 weeks, once the wound is healing well. Heavy gripping and tools around 6 to 12 weeks.
- Driving: once you can grip the wheel firmly and control the car in an emergency, without pressure on a raw scar.
- Golf, gym, tools: back once the scar tolerates firm grip, usually towards the end of that 6 to 12 week range.
What a hand therapist does here
- Molds and remolds the splint to the corrected finger as it straightens further.
- Measures both directions. Straightening and bending, with a goniometer, so a slipping finger shows up as a number in week 3, not a surprise in month 3.
- Works the scar and controls swelling.
- Adds a daytime plan when the middle joint starts losing ground.
This is one of dozens of splints a hand therapist makes. See what a hand therapist does for the full list.
Call your surgeon today if
- A fingertip goes numb, pale, white or cold. Nerves and arteries run right beside the cord. Take the splint off first; if it doesn’t recover within minutes, call.
- The wound is red, hot, weeping, with spreading redness or a fever. See wound healing or infection.
- You suddenly can’t bend the finger at all.
- Pain escalating after the first week, with a shiny, swollen, color-changed, very sensitive hand.
Get it checked if
- Straightening is slipping back despite the splint.
- Bending into a fist is getting worse.
- The splint presses on the scar or wakes you with pain.
- Numbness in a finger after surgery that isn’t improving over the first weeks.
- The finger starts to bend again after you’ve stopped the splint.
Straight at night, a full fist by day, and watch the middle joint.
Written by Nigel Chua, hand occupational therapist in practice since 2005. Thousands of hands, wrists and elbows assessed and treated. My credentials are here. This article explains; it doesn’t examine. A treated finger that’s starting to curl again deserves a review this week, while the scar can still be persuaded.
Part of: Hand, wrist and elbow splints: which one, why and how long
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.