Patient question
Can I have a knee steroid injection if I have diabetes, or during Ramadan?
Quick answer
People with diabetes can usually have a knee steroid injection, but blood sugar often rises for a few days afterwards, so closer monitoring is needed. During Ramadan, injections can be timed after iftar if preferred. Blood thinners and other conditions also need checking first, explains Dr. Pablo Gelber, knee surgeon at Aman Hospital in Doha, Qatar.
Diabetes and steroid injections
Diabetes is common in Qatar, and many people with knee arthritis also manage their blood sugar. A steroid injected into the knee is partly absorbed into the bloodstream and can raise blood glucose, typically for a few days. The rise is usually manageable, but it can be significant in people on insulin or with poorly controlled diabetes.
- Tell your doctor about your diabetes and your latest HbA1c
- Check your sugar more often for three to five days after the injection
- Know how to adjust insulin if advised, or contact your diabetes team
- Consider a non-steroid option if diabetes is poorly controlled
Diabetes also raises infection risk slightly, so watch the knee closely for redness, heat or increasing swelling.
Hyaluronic acid and PRP in diabetes
Hyaluronic acid and PRP do not contain steroids and are not expected to affect blood sugar in the same way. For people with diabetes who want an injection, they may be discussed as alternatives, bearing in mind the more mixed evidence for their benefit.
Injections during Ramadan
Many patients prefer to avoid any procedures while fasting. Questions about whether an injection affects the fast should be directed to a religious scholar, and many people simply choose to have it after iftar. Fasting can also make blood sugar harder to control, so people with diabetes may prefer to postpone a steroid injection until after Ramadan unless a flare is severe. Aman Hospital can help with appointment times that suit your fast.
Blood thinners and other conditions
Knee injections can usually be given while taking blood-thinning medicine such as aspirin, warfarin or newer anticoagulants, but tell your doctor in advance in case any precautions are needed. Also mention any current infection, skin problems over the knee, recent steroid courses, pregnancy, or a history of allergy to local anaesthetic.
Frequently asked questions
How high can my sugar go after the injection?
It varies from person to person and with the dose. The rise is usually temporary, but if readings stay high or you feel unwell, contact your doctor.
Are there steroid options with less effect on sugar?
Some extended-release preparations are designed to reduce absorption into the bloodstream. Whether one is suitable can be discussed at your appointment.
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