A degloving injury happens when skin and the tissue just beneath it are torn away from the underlying muscle, bone, or deeper structures. Think of it like peeling a glove off a hand: the outer layers separate from what’s underneath. These injuries range from a single finger to large sections of a limb or torso, and they can be visible from the outside or entirely hidden beneath intact-looking skin.
How Degloving Injuries Happen
The physics behind degloving involve a shearing force, where two layers of tissue are dragged in opposite directions. Bone, muscle, and the tough connective tissue wrapping them slide one way, while the skin and fat slide the other. This tears through the small blood vessels and lymphatic channels running between those layers, cutting off blood supply to the skin and creating a space where fluid collects.
The most common causes involve high-energy trauma. Industrial machinery, traffic accidents (especially motorcycles), and heavy equipment on construction sites account for the majority of cases. A vehicle tire rolling over a limb, for example, creates the exact kind of rotational shearing force that strips skin from deeper tissue. Falls from significant heights and crush injuries are other frequent causes.
One well-known type is the ring avulsion injury, where a ring catches on a fence, ledge, or piece of machinery while the hand moves away. The ring focuses all the force onto a narrow band of skin, stripping the finger. This is why many people who work with their hands, from electricians to athletes, wear silicone rings or no rings at all.
Open vs. Closed Degloving
Degloving injuries fall into two broad categories, and they look very different from each other.
Open degloving is the more visually obvious type. The skin is physically peeled back or torn completely off, exposing the muscle, tendons, or bone underneath. There’s typically significant bleeding, and the separated skin may still be partially attached as a flap or entirely detached from the body.
Closed degloving (also called internal degloving) is harder to recognize because the skin surface stays intact. Underneath, though, the same separation has occurred. Blood, lymphatic fluid, and dead fat tissue collect in the newly created pocket between the skin and the deeper layers. From the outside, you might see bruising, swelling, or skin that feels unusually loose and mobile when pressed. The affected area may also feel numb due to damaged nerves. If left untreated, the pocket of fluid can enlarge over days or weeks, and the overlying skin can become firm and painful as the body tries to wall off the collection.
Morel-Lavallée Lesion
The most studied form of closed degloving is the Morel-Lavallée lesion. Over 60% of these occur around the hip, particularly near the bony prominence on the outer thigh. They’re closely associated with pelvic and thighbone fractures. Less commonly, they show up around the buttocks, lower back, shoulder blade, or knee (sometimes from a direct blow during contact sports). Because the skin looks relatively normal, these injuries are frequently missed during initial evaluation, especially when the patient has more dramatic injuries elsewhere. An MRI can reveal the size, shape, and contents of the fluid pocket, though the injury is often diagnosed through physical examination alone.
Ring Avulsion Grading
Finger degloving from rings is common enough to have its own classification system. The Urbaniak system divides these injuries into three classes based on severity:
- Class I: Blood flow to the finger is still adequate. The skin is damaged but the finger remains viable.
- Class II: Blood flow is compromised. The finger survives but needs surgical restoration of circulation.
- Class III: The finger is completely degloved or fully amputated. Reconstruction or amputation decisions follow.
Class I injuries generally have the best outcomes. Class III injuries often require amputation, though surgical teams sometimes attempt complex reconstruction depending on which finger is involved and the patient’s needs.
How Degloving Injuries Are Treated
Treatment depends on how much skin was lost, whether it still has blood supply, and whether the separated tissue is salvageable.
When the skin has been completely removed from the body, surgeons may attempt replantation, essentially reattaching the original skin. If the skin is still partially connected but its blood vessels are damaged, surgeons can restore circulation by reconnecting tiny arteries or veins under a microscope. In either case, vacuum-assisted wound closure devices are commonly used afterward, applying gentle, constant suction to hold the skin against the wound bed and promote attachment. In one reported case using this approach, about 90% of the reattached graft successfully took hold.
When the original skin is too damaged to reattach as a living flap, it can still be processed into a skin graft. The avulsed skin is harvested for a split-thickness or full-thickness graft and placed back over the wound. For larger or more complex injuries where the original skin is destroyed, surgeons use tissue flaps borrowed from other parts of the body, such as the thigh or back. In severe hand injuries where both the palm and back of the hand are degloved, a technique called abdominal pocketing is sometimes used, where the hand is temporarily tucked into a pocket created in the abdominal skin to allow new tissue coverage to grow.
For closed degloving injuries, treatment often involves draining the fluid collection. Smaller pockets may resolve with compression and monitoring, while larger or persistent ones need surgical drainage and sometimes removal of the capsule that forms around the fluid.
Recovery Timeline
Recovery from a significant degloving injury is measured in months, not weeks. A case report documenting rehabilitation after a lower-leg degloving injury outlines a typical three-phase process spanning about six months.
During the first phase (roughly weeks 1 through 8), the focus is on wound healing and managing the effects of surgery. The injured area is often immobilized, sometimes in a cast or splint, for 8 to 10 weeks. Physical therapy during this period is gentle, aimed at preventing complications from being immobile rather than rebuilding strength.
The second phase (weeks 10 through 18) shifts toward early movement. For a leg injury, this means beginning to transfer in and out of bed, starting range-of-motion exercises at the ankle or knee, doing strengthening work, and progressing to partial weight-bearing with balance training.
The third phase (weeks 18 through 24) focuses on functional recovery: building toward full weight-bearing, performing stepping exercises, and gradually returning to daily activities. By six months, the patient in the documented case was walking and performing daily tasks independently.
The timeline varies significantly depending on which body part is affected, how large the injury is, and whether complications arise. Hand and finger degloving injuries follow a different rehabilitation path, with early focus on restoring grip, sensation, and fine motor control through occupational therapy.
Complications to Watch For
The biggest threat after degloving is tissue death. When skin loses its blood supply, it can die even after being surgically reattached, sometimes requiring additional grafting procedures. Infection is a persistent risk because of the large wound surface area and the dead tissue that can harbor bacteria. Negative pressure wound therapy (vacuum-assisted closure) helps reduce both risks by keeping the wound clean and promoting blood flow to the graft.
Closed degloving injuries carry their own set of complications. If the fluid collection isn’t recognized and treated, it can become infected or form a chronic, encapsulated mass that causes ongoing pain and skin changes. Numbness or altered sensation in the affected area is common with both types, since the nerves running through the separated tissue layers are frequently damaged during the initial injury. Some degree of permanent sensory change is typical, though partial nerve recovery is possible over many months.