Why would a bone fracture not heal?
Sarah Garza
Updated on April 19, 2026
Causes and Risk Factors
Blood brings oxygen, healing cells and growth factors to the bone to allow it to heal. If a fractured bone is left unstable or lacks blood supply, it can lead to a nonunion. Factors including the use of tobacco or nicotine can impede bone healing and increase the risk of nonunion.Which factors delay healing of bone fractures?
What Can Hinder Bone Healing?
- Movement of the bone fragments; weightbearing too soon.
- Smoking, which constricts the blood vessels and decreases circulation.
- Medical conditions, such as diabetes, hormone-related problems or vascular disease.
- Some medications, such as corticosteroids and other immunosuppressants.
How can you tell if a broken bone isn't healing?
“Patients who suspect their fracture has not healed after treatment or is not healing properly should look out for three things: pain at the site, deformity – the bone was straight and now it's bent – and impaired use or function – leg or ankle still cannot support weight.Will a nonunion fracture eventually heal?
A nonunion is a broken bone that has not healed. Most fractures—broken bones—will heal effectively with standard treatment in about 6 to 12 weeks. Between 5 and 10 percent, however, may fail to heal completely.Is a nonunion serious?
Nonunions usually lead to a continuation of the pain at the site of a break, even after the initial pain of the fracture has passed. The pain from a nonunion may last months or even years if treatment is not sought.What can cause a fracture to have delayed healing?
What does a non union fracture feel like?
Common symptoms of a nonunion fracture include pain, swelling, tenderness, deformity, and the inability to bear weight despite sufficient time since the break. There is a timeframe for fracture healing, and patients with a nonunion may continue to experience symptoms after several weeks.What is a chronic fracture?
A chronic nonunion is here defined as a fracture that has failed to heal for more than 12 months, using clinical and radiographic criteria, at which time the nonunion diagnosis is not in doubt [6].How long does an untreated fracture take to heal?
Most fractures heal in 6-8 weeks, but this varies tremendously from bone to bone and in each person based on many of the factors discussed above. Hand and wrist fractures often heal in 4-6 weeks whereas a tibia fracture may take 20 weeks or more.When does a broken bone stop hurting?
Your RecoveryYour doctor fixed a broken (fractured) bone without surgery. You can expect the pain from the bone to get much better almost right after the procedure. But you may have some pain for 2 to 3 weeks and mild pain for up to 6 weeks after surgery.
What can affect fracture healing?
Factors that influence fracture healing are both local and systemic; the former include particularly the degree of local trauma and bone loss, the type of bone affected, the degree of immobilization and local pathologic conditions; the latter include age, hormones, local stress and electric currents.What inhibits bone healing?
Steroids, chemotherapy drugs, and some classes of antibiotics have been reported to exert a negative effect on bone healing[15, 16]. In addition, NSAIDs that are one of the most commonly prescribed drugs for pain relief and inflammation to date have also been found to delay union and to inhibit fracture healing [15].What is the most important factor in fracture healing?
The most important factors in fracture healing are blood supply and soft-tissue health, and initial management of an injured limb should have the goal of maintaining or improving these.Why does my fracture still hurt?
Chronic pain after the healing is completeSome people may continue to experience pain long after the fracture and soft tissues have finished healing. This is what we call chronic pain. Chronic pain may be caused by nerve damage, the development of scar tissue, aggravation of underlying arthritis, or other causes.