The short version
- A degloving injury tears skin and the tissue under it away from muscle, tendon or bone, the way a glove is pulled off a hand[3][5].
- On fishing boats the usual cause is deck machinery: in Alaska, 67% of 125 winch injuries came from a body part caught in or crushed by a winch or its cables, and half hit the fingers[1].
- A ring can do it with little force: ring avulsion can produce a complete amputation from a small pull[3].
- Any avulsed tissue goes in saline-moistened gauze, then a sealed bag, then a second container of ice and water, never straight onto ice[8].
What is a degloving injury?
It is a shearing injury that separates the skin and fat from the deeper layers. Some are open, with the skin torn away; others are closed, with the skin intact over a pocket of blood and fluid[5][6].
| Type | What it looks like | Why it is missed or dangerous |
|---|---|---|
| Open degloving | Skin and soft tissue torn back, often from a hand or forearm | 71% of 14 grafted patients had critical structures exposed; 86% of injuries were in the arm or hand[7] |
| Ring avulsion | Finger pulled through a ring | Small forces can cause complete amputation; treatment usually means emergency surgery[3] |
| Closed ring avulsion | Cool, pale finger with no wound or fracture | Both finger arteries were torn in one reported case, found only because pulse oximetry was abnormal[4] |
| Closed degloving (Morel-Lavallée) | A swelling that fills with fluid days after a crush or shear | Often misdiagnosed as cellulitis or an abscess; one forearm case became infected[6][5] |
How degloving happens on a fishing deck
| Finding | Data |
|---|---|
| Alaska winch injuries, 2000 to 2020[1] | 125 injuries; 94% men; 54% aged 30 or younger; over 80% in salmon fisheries |
| Mechanism[1] | 67% caught in or compressed by a winch or its cables |
| Body part[1] | Fingers 50%; hands and wrists 22% |
| Small-boat fishing, North Carolina[9] | Half of all injuries hit the hand, wrist or fingers |
Fishermen in two US fleets rate winch risk as high, yet cost, installation work and other safety priorities often delay winch safety gear[2]. The injury list in Alaska ran from sprains to finger and hand crushes and upper limb amputation[1]. For the wider picture, see the most common injuries on ships.
First aid for a degloving injury at sea
- Stop the machine and free the hand without pulling the trapped tissue further.
- Control bleeding with firm direct pressure and a clean, moist dressing over the wound.
- Save every piece of avulsed tissue: saline-moistened gauze, sealed plastic bag, then a second bag or container of ice and water[8].
- Do not freeze it. The review links cooling as soon as possible, without freezing, to better replantation survival and function[8].
- Remove all rings from the injured hand before it swells, and keep the hand raised.
- Call for radio medical advice and start the medevac decision at once.
The 2025 ILCOR scoping review sets the standard for this. Only 35% of patients with complete traumatic amputations reach the emergency department with the part properly preserved, according to the literature the review cites[8]. That gap is a training problem, and training is cheap.
A finger that looks intact can still be dying
After any ring or line pull, a cold, pale or numb finger is an emergency even with no cut[4]. A swelling that keeps growing days after a crush also needs a doctor, because closed degloving is commonly missed[5][6].
Prevention on deck
| Control | Why it matters |
|---|---|
| No rings on deck | Ring avulsion needs only a small force to amputate a finger[3] |
| Winch emergency stops and guarding | Two thirds of Alaska winch injuries were caught-in or compression events[1] |
| Budget winch safety gear before it is needed | Cost and installation were the main barriers fishermen named[2] |
| Drill the tissue-preservation steps | Proper cooling is linked to replantation success[8] |
Monthly drills already cover emergencies on fishing vessels; add a hand-injury scenario. See fishing vessel drill requirements and 46 CFR 28.210 first aid requirements.
Discovery Health MD builds the medical side of a deck injury plan: ship medical chest management for the dressings, saline and cold storage, and maritime medical consulting for the hand-injury and medevac protocol. See also commercial fishing deaths. Have a physician review your deck injury plan.
Common questions
What is a degloving injury?
An injury in which skin and soft tissue are torn or sheared away from the deeper structures beneath them[5][3].
What causes degloving on boats?
Mostly deck machinery: in Alaska, 67% of winch injuries happened when a body part was caught in or crushed by a winch or its cables[1].
Is a degloving injury an emergency?
Yes. Ring avulsion often needs emergency surgery, and a cold, pale finger after a pull can mean torn arteries even without a wound[3][4].
How do you store avulsed skin or a finger?
Wrap it in saline-moistened gauze, seal it in a plastic bag, and place that in a second bag or container of ice and water, without freezing it[8].
Can degloved skin be reattached?
Sometimes. In one 10-year review, avulsed tissue was used as an immediate full-thickness skin graft, with 88% average initial graft take[7].
What is closed degloving?
A Morel-Lavallée lesion: shear separates skin from the deep fascia without breaking the skin, and a fluid pocket forms[5].
How do you prevent ring avulsion?
Take rings off before deck work. Ring avulsion can amputate a finger with a small force[3].
