Trigger finger and Dupuytren contracture can both make a finger difficult to move, but they are different disorders. Trigger finger involves impaired flexor-tendon gliding through the A1 pulley. Dupuytren disease involves progressive fibrotic thickening and contracture of the palmar fascia.
The two are often confused because both can cause a lump in the palm, both commonly affect middle-aged and older adults, and both can leave a finger bent. But they involve different structures, behave differently when the finger moves and are treated differently. A finger that catches is not the same as a finger that is being pulled down.
Two different structures
The palm has two layers that matter here.
Close to the skin is the palmar fascia, a tough sheet of connective tissue that anchors the skin of the palm and extends into the fingers. It does not move the fingers. It is the tissue affected in Dupuytren disease.
Deeper are the flexor tendons, which bend the fingers. They run through a sheath held against the bones by a series of fibrous pulleys. The first, the A1 pulley, lies on the palm side of the hand at the level of the knuckle where the finger joins the palm. It is the site of trigger finger.
Both structures sit in roughly the same area of the palm, which is why a lump in that area can come from either.
What trigger finger is
Trigger finger, or stenosing flexor tenosynovitis, is a mechanical tendon-gliding problem. The flexor tendon and A1 pulley become thickened, and the tendon no longer passes smoothly through the pulley. Trigger finger is better understood as a stenosing tendon–pulley disorder than as simple inflammation.
The result is catching, clicking or locking as the finger bends or straightens, usually with pain or tenderness over the A1 pulley. In more advanced cases the finger locks in a bent position and needs effort or the other hand to straighten it. Between episodes, many fingers can still be fully straightened, at least passively. The fuller explanation is in trigger finger vs flexor tendon pain.
What Dupuytren disease is
Dupuytren disease, also called palmar fibromatosis, is a fibroproliferative disorder of the palmar fascia that can result in finger contractures (Ohmes, 2025). It usually develops slowly over months to years.
It often begins as a firm nodule in the palm. In some people it progresses to a cord, a band of thickened fascia that can be felt and seen under the skin, running from the palm toward a finger. As the cord shortens, it pulls the finger into a bent position at the knuckle (MCP) joint, the middle (PIP) joint or both. The ring and little fingers are commonly involved.
Dupuytren contracture limits finger extension because diseased palmar fascia progressively shortens; trigger finger catches during tendon excursion.
Dupuytren disease is often less painful than trigger finger. A nodule may be tender in its early stage, but many people notice it first because they cannot lay the hand flat on a table, put on a glove or reach into a pocket, not because it hurts. It does not usually produce classic tendon triggering.
Do not confuse the two kinds of lump
Both disorders may produce a palpable lump in the palm, but the structure and mechanism are different.
A trigger-finger nodule is a thickening of the flexor tendon or its sheath at the A1 pulley. It lies deeper, is usually tender and moves with the tendon when the finger bends and straightens. It may be felt to catch at the pulley.
A Dupuytren nodule sits in the palmar fascia just under the skin. It is firm, is often attached to the overlying skin and does not slide with tendon movement. The skin above it may pucker or pit, and a cord may extend from it toward a finger.
Feeling the lump while the patient slowly opens and closes the hand is often the quickest way to tell which structure it belongs to.
How they move
The movement pattern is usually the clearest difference.
In trigger finger, the problem is dynamic. Bending and straightening produce a hesitation, a click or a lock. The finger may move normally for part of the arc and then catch. Between triggering episodes the finger can usually be straightened, at least with help.
In Dupuytren contracture, the problem is a progressive loss of straightening. Bending is usually preserved, but the finger cannot be fully straightened actively or passively because the cord holds it down. There is no click; the finger simply stops short of straight, and the limit tends to increase gradually.
A simple clue is whether the hand can be placed flat on a table. A Dupuytren contracture at the knuckle or middle joint often prevents it. A trigger finger that is not currently locked usually does not.
How each one feels in daily life
The two conditions also tend to announce themselves differently. People with trigger finger often describe a finger that sticks when they first make a fist in the morning, clicks when they let go of a steering wheel or a bag, or hurts at the base of the finger after a day of gripping tools. The symptoms come and go with use.
People with Dupuytren contracture more often describe a gradual change they noticed late: a finger that catches on a pocket, gets in the way when washing the face or pulling on a glove, or will not lie flat when shaking hands. The limitation is steady rather than intermittent.
Trigger finger vs Dupuytren at a glance
| Feature | Trigger finger | Dupuytren contracture |
|---|---|---|
| Underlying structure | Flexor tendon and A1 pulley | Palmar fascia |
| Typical problem | Catching or locking | Progressive contracture |
| Pain | May be painful | Often less pain-dominant |
| Palpable finding | Tendon or pulley nodule or thickening | Palmar nodule or cord |
| Motion | Triggering during flexion and extension | Progressive loss of extension |
| Shockwave evidence | Direct randomized trigger-finger evidence exists | Separate Dupuytren literature; trigger-finger effect sizes do not transfer |
When both are present
The two conditions can coexist in the same hand, and sometimes in the same finger. A 2026 case report described a patient with progressive hand stiffness and triggering whose MRI showed both early Dupuytren disease of the palmar fascia and thickening of the A1 pulley with flexor tendon sheath changes consistent with stenosing tenosynovitis (Wuertzer, 2026). The authors described them as two distinct but potentially related fibroproliferative processes.
That matters clinically. A patient with known Dupuytren disease who develops catching may have trigger finger as well, and the triggering may respond to trigger-finger treatment even though the contracture will not. Equally, a patient treated for trigger finger whose finger keeps losing extension between episodes should be checked for Dupuytren disease.
Other causes of a bent or stiff finger
- Finger joint arthritis or stiffness after injury limits both bending and straightening and is felt at the joint rather than in the palm.
- Flexor tendon injury causes loss of active bending after trauma or a cut and needs prompt hand-surgery evaluation.
- A locked trigger finger can mimic a fixed contracture, but it usually releases with effort or help, whereas a Dupuytren contracture does not.
- Trigger thumb is the same tendon–pulley problem in the thumb and differs from thumb CMC arthritis at the base of the thumb.
- Other masses in the palm, such as ganglion cysts or, rarely, tumors, can be mistaken for either condition, so an atypical, enlarging or unusual lump should be imaged or referred.
How the exam separates them
The examination checks:
- Where the lump is, how deep it sits and whether it moves with the tendon
- Whether there is a cord running toward the finger and any skin pitting
- Whether bending and straightening produce a catch, click or lock
- Whether the finger can be fully straightened actively and passively
- Which joints are limited and in which direction
- Whether the hand can be placed flat on a table
- Tendon continuity and sensation
When the picture is unclear, ultrasound can show whether a nodule belongs to the palmar fascia or the flexor tendon and pulley, and dynamic ultrasound can show whether the tendon catches during movement.
Why the distinction changes treatment
Trigger finger is treated according to severity. Activity modification, tendon-gliding movement, splinting, corticosteroid injection and shockwave therapy all have a role in suitable cases, and surgical release of the A1 pulley remains a highly effective option for persistent or advanced triggering. The shockwave evidence is reviewed in shockwave therapy for trigger finger.
Dupuytren disease is managed differently. Treatment options range from minimally invasive office procedures to more extensive surgery (Ohmes, 2025), and the decision usually depends on how much the contracture limits hand function. A contracture that is progressing, involves the middle finger joint or interferes with daily tasks warrants a hand-surgery opinion. Stretching, splinting and soft-tissue treatment do not reverse a Dupuytren cord.
Shockwave has been studied separately in Dupuytren disease, and a 2025 review of shockwave in hand surgery covered it alongside trigger finger and other hand conditions (Al-Mousllie, 2025). The two literatures should not be mixed. Effect sizes from trigger-finger trials do not apply to Dupuytren contracture, and shockwave should not be presented as straightening a contracted finger.
Manual treatment may help selected surrounding soft-tissue restrictions in the hand and forearm, but it does not open the A1 pulley in trigger finger or dissolve a Dupuytren cord.
The bottom line
Trigger finger involves the flexor tendon and A1 pulley and causes catching or locking during movement. Dupuytren disease involves the palmar fascia and causes a gradual loss of straightening. Both can produce a lump in the palm, and they can occur together, but they are different problems with different treatment pathways.
The overall approach is described on our trigger finger and flexor tendon pain page.
References
- Ohmes LB, Ghilzai UM, Netscher DTJ. Update on Dupuytren disease: pathogenesis, natural history, treatment, and outcomes. Plastic and Reconstructive Surgery. 2025;155(3):618e-631e. PMID 39999238. (link)
- Wuertzer SD, Ulaganathan B, Acar M. Concurrent MRI findings of Dupuytren's disease and A1 pulley stenosing tenosynovitis: a case report. Radiology Case Reports. 2026;21(9):3853-3857. PMID 42327504. (link)
- Al-Mousllie I, Vogt PM, Jokuszies A. State of shock: a systematic review of extracorporeal shockwave therapy in hand surgery. GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW. 2025;14:Doc03. PMID 41602486. (link)
