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Published on: 8/18/2026
A fracture that is slow to knit warrants a focused conversation with your orthopedic provider, starting with whether imaging shows delayed union or nonunion, what timeline is realistic for your specific break, and which factors may be stalling repair, such as smoking, diabetes, poor nutrition, low vitamin D, certain medications, infection, inadequate immobilization, or too much weight-bearing too soon. Ask what changes could help, whether bone stimulation, bracing adjustments, blood work, or surgical options like bone grafting or internal fixation are appropriate, and what warning signs mean you should call sooner. There are several important factors to consider, and they differ by bone, age, and health history, so review the complete details below before your appointment.
Because delayed bone healing often traces back to overlapping causes that are easy to miss, a fast, structured review of your symptoms can help you organize what to raise with your doctor and spot issues worth flagging now. Take a free, instant, online symptom check to better understand what may be slowing your recovery and to help you navigate the next steps with confidence.
Last reviewed for medical accuracy: 08/18/2026
A slow-healing or non-healing fracture in an adult can be frustrating and concerning. Most bone breaks mend in 6–12 weeks, but some stalls in the repair process. Knowing the right questions to ask helps you and your care team find the cause and best plan for recovery.
A “non-healing fracture” (also called a delayed union or nonunion) is defined as a break that shows little to no progress toward full bone healing after about 3–6 months. Common warning signs include:
Factors that often contribute to delayed healing include poor blood supply, infection, certain medications, systemic illnesses (like diabetes), smoking, malnutrition, and inadequate stabilization.
While medical treatment is essential, your lifestyle can support bone repair:
If you experience any of the following, contact your doctor or go to the emergency department:
For non-urgent concerns, you might start with a free, online symptom check, using the doctor approved Ubie Symptom Checker.
A non-healing fracture in an adult can be challenging, but with the right questions, thorough evaluation, and coordinated care, you can get back on the path to recovery. Always follow your medical team’s advice, and don’t hesitate to seek a second opinion if you feel uncertain.
If you notice any potentially serious signs, or your concerns go beyond routine care, speak to a doctor as soon as possible. Proper attention now helps prevent long-term complications and supports the best outcome for your bone health.
(References)
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* HICKS JH. Non-union of fractures. Lancet. 1963 Jan 12;1(7272):86-9. doi: 10.1016/s0140-6736(63)91089-4. PMID: 13954366.
* Megas P. Classification of non-union. Injury. 2005 Nov;36 Suppl 4:S30-7. doi: 10.1016/j.injury.2005.10.008. PMID: 16291321.
* Copuroglu C, Calori GM, Giannoudis PV. Fracture non-union: who is at risk? Injury. 2013 Nov;44(11):1379-82. doi: 10.1016/j.injury.2013.08.003. Epub 2013 Aug 8. PMID: 24035757.
* Marzi I. Focus on non-union of fractures. Eur J Trauma Emerg Surg. 2019 Feb;45(1):1-2. doi: 10.1007/s00068-019-01079-4. PMID: 30706111.
* Chloros GD, Howard A, Giordano V, Giannoudis PV. Radiographic Long Bone Fracture Healing Scores: Can they predict non-union? Injury. 2020 Aug;51(8):1693-1695. doi: 10.1016/j.injury.2020.07.024. PMID: 32718464.
* Nicholson JA, Makaram N, Simpson A, Keating JF. Fracture nonunion in long bones: A literature review of risk factors and surgical management. Injury. 2021 Jun;52 Suppl 2:S3-S11. doi: 10.1016/j.injury.2020.11.029. Epub 2020 Nov 11. PMID: 33221036.
* Hodgson H, Giannoudis PV, Howard A. Fracture non-union; what are the current perceived challenges among clinicians? Injury. 2022 Dec;53(12):3865-3866. doi: 10.1016/j.injury.2022.10.029. Epub 2022 Nov 1. PMID: 36379739.
* Wagner RK, Janssen SJ, Kloen P. [Non-union]. Ned Tijdschr Geneeskd. 2023 Oct 18;167. Epub 2023 Oct 18. PMID: 37850603.
* Chow CL, Ma CM, Lui TH. Pathological fracture non-union of medial clavicle after radiotherapy. BMJ Case Rep. 2025 Apr 24;18(4). doi: 10.1136/bcr-2024-260961. Epub 2025 Apr 24. PMID: 40280590; PMCID: PMC12034920.
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