An avulsion injury occurs when body tissue is forcibly torn from its original attachment.

Health · Published 3 October 2026 Swipe more like this →

In short: Whether it is a piece of bone pulled away by a tendon, skin stripped from a limb, or a nerve detached from the spine, an avulsion is a traumatic separation. While some minor cases heal with simple protection, others demand complex surgery to restore function to the damaged area.

An avulsion injury is defined by the forceful detachment of a body structure. In the context of bone, an avulsion fracture happens when a tendon or ligament pulls a fragment of bone away from the main structure. Most of these fractures do not require surgery; instead, they are managed through immobilization in a cast or splint, anti-inflammatory medication, and restricted activity. Healing occurs as the body forms a blood clot followed by a firm collagen callus. Bone cells then extend threads to bridge the gap, eventually reattaching the bone fragment.

When an injury is severe—such as when a bone fragment is displaced by more than 2 centimeters—surgical intervention becomes necessary. Surgeons may perform an open reduction to realign the bones or internal fixation, which utilizes metal hardware like pins, plates, or screws to secure the structure. Recovery times for these fractures typically range from three to 12 weeks. Patients are often monitored by an orthopaedist to ensure proper healing, as returning to physical activity too early carries a significant risk of reinjury.

Beyond bone, avulsions affect various tissues with differing outcomes. Skin avulsions range from minor flaps to severe degloving, often requiring grafts. Nerve avulsions, such as those involving the brachial plexus, involve the tearing of nerves from the spinal cord, which may require surgical reattachment to restore function. Similarly, dental avulsions require rapid action; a permanent tooth replaced within one hour has the highest chance of long-term retention. In contrast, some structures, like lost fingernails, are not reattached but must regrow naturally over several months.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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