Can People With Diabetes Really Not Receive Knee or Shoulder Joint Injections? — Why Steroid Injections Disturb Blood Sugar, and Stem Cell Conditioned Media Joint Injection as an Alternative, Explained by Dr. Moriwaki2026.07.18

“I was told a joint injection is difficult because I have diabetes.” “I went to the orthopedic clinic for knee pain, but a steroid injection was refused because it would raise my blood sugar.” — We hear these stories in our outpatient clinic more often than you might think. If you have diabetes, is the option of a joint injection truly closed off? In this article, we walk through the relationship between joint injection, blood glucose, and diabetes, and where a stem cell conditioned media joint injection fits within that picture — from the perspective of Dr. Moriwaki at AVAN TOKYO Ginza.

Key Points of This Article

・Among joint injections for the knee, shoulder, and lower back, steroid joint injection tends to raise blood glucose for several days up to about a week, so it requires cautious selection in people with diabetes.

・Steroids raise blood glucose through hepatic gluconeogenesis and increased peripheral insulin resistance — pharmacological effects that reach the whole body even when injected locally.

・A stem cell conditioned media joint injection works through growth factors and cytokines to influence the inflammatory environment and tissue repair; on this mechanism, a steroid-like rise in blood glucose is not theoretically expected.

・That said, any joint injection in a person with diabetes still calls for stricter attention to glycemic control status, infection risk, and wound-healing capacity than usual.

・Before treatment, sharing HbA1c, fasting glucose, and any complications with the treating physician, and designing a reasonable plan, is essential.

What Actually Becomes a Problem With Joint Injection in Diabetes?

For chronic joint pain in the knee, shoulder, or lower back, orthopedic care typically begins with conservative options such as steroid joint injection or hyaluronic acid joint injection. In people with diabetes, however, this steroid joint injection can create unexpected issues.

Steroid Joint Injection and Blood Glucose

Steroids have a strong anti-inflammatory effect, but they also promote hepatic gluconeogenesis and reduce insulin sensitivity in peripheral tissues. Even when injected into a joint cavity, a portion enters systemic circulation, and blood glucose can trend higher than usual for several days — sometimes up to about a week — after the shot. In non-diabetic patients this rarely matters, but for people with elevated HbA1c or those managing blood sugar with insulin or sulfonylureas, the post-injection hyperglycemia risk cannot be ignored.

Infection Risk and Wound Healing

Another factor that must not be overlooked with joint injection is infection and wound healing. Diabetes is known to reduce neutrophil function and impair peripheral circulation, lowering resistance to infection compared to non-diabetic patients. Joint puncture itself is an extremely safe procedure, but a rare intra-articular infection (septic arthritis) can become serious, so under poor glycemic control caution is warranted regardless of which agent is used.

diabetes joint injection knee shoulder regenerative medicine

Can a Stem Cell Conditioned Media Joint Injection Be a “Blood-Sugar-Friendly” Option?

When the aim is to avoid the blood-glucose impact of steroids, a stem cell conditioned media joint injection comes into view as a different option.

A Mechanism Entirely Different From Steroids

Stem cell conditioned media is a complex liquid preparation containing growth factors (TGF-β, IGF-1, FGF, VEGF, and others), cytokines, and exosomes secreted extracellularly during the culture of mesenchymal stem cells. It does not contain components that strongly promote gluconeogenesis or reduce insulin sensitivity the way steroids do, so a direct pharmacological effect on blood glucose is not theoretically expected. For more details, please see our page on stem cell conditioned media joint injection.

Still Not “Unconditionally Safe” — Here’s Why

Still, being stem cell conditioned media does not mean it is unconditionally safe with diabetes. Because joint puncture is a procedural intervention, infection risk cannot be brought to zero, and with poor glycemic control the injection site can develop skin issues, prolonged swelling, or delayed healing. The decisive difference from steroids is only that “the direct pharmacological impact on blood glucose is small” — diabetes itself still needs to be properly managed before the procedure is considered. For information on joint disorders, please also refer to the Japanese Orthopaedic Association.

Medical Checkpoints to Confirm Before Treatment

When a person with diabetes considers a joint injection, the two things to organize first are the current status of glycemic control and the presence or absence of complications.

Guideline Targets for HbA1c and Fasting Glucose

There is no single unified threshold, but in real-world practice, when HbA1c is stable at around 7.0% or below, the risk of a joint injection tends to be judged as relatively acceptable. When HbA1c exceeds 8.0%, or blood glucose swings widely as in poorly controlled cases, we would rather prioritize correction of glycemic control by the internist first, and consider joint injection afterwards. Because individual variation is significant in this area, decisions must always be discussed with the treating physician.

Evaluation of Neuropathy and Vascular Disease

Especially when considering injections into the ankle or toe joints, checking for peripheral neuropathy and peripheral arterial disease is a key point. Numbness, cold sensation, or a weak dorsalis pedis pulse may indicate reduced wound healing in the skin, and the timing and intensity of the procedure must be designed more carefully. The same is true for larger joints such as the knee and shoulder — circulatory impairment can affect post-injection swelling and healing, so pre-evaluation is important across the board.

Diabetes and Joint Injection: Don’t End With “You Can’t Get It”

Having diabetes does not mean that every option for knee, shoulder, or lower-back joint pain is closed off. Even when a steroid joint injection becomes difficult because of its blood-glucose impact, a stem cell conditioned media joint injection, hyaluronic acid joint injection, exercise therapy, and brace therapy are still on the table as conservative options that can be combined. What matters is being able to explain “why this particular joint injection” along three axes — blood glucose, infection, and healing. When the treating physician and a clinic offering regenerative medicine share information and build a reasonable plan, there is a workable path forward for living with joint pain even alongside diabetes. Related columns are also available on our column list.

Frequently Asked Questions

Q. Can I still receive a stem cell conditioned media joint injection if I have diabetes?

In most cases it can be considered, provided glycemic control is not severely poor. That said, it presupposes that HbA1c and fasting glucose are known and that information has been shared with your internist. The level of caution varies with complications and the target joint, so please discuss it during a pre-treatment consultation.

Q. How much does blood glucose rise after a steroid joint injection?

Individual variation is large, but blood glucose may trend higher than usual from 2–3 days up to about a week after the injection. Those on insulin therapy in particular should discuss glucose monitoring and possible dose adjustment with their treating physician in advance.

Q. If my blood sugar is well controlled, is the risk of a joint injection zero?

No. Risks common to joint injection, such as infection, bleeding, and allergy, cannot be reduced to zero. However, the diabetes-specific risks of hyperglycemia, infection, and delayed healing can be substantially lowered under good glycemic control.

Q. Can I treat all joints the same way?

Anatomical risks and infection risks differ between the knee, shoulder, lower back, ankle, and finger joints. Evaluation of peripheral neuropathy and vascular disease is particularly important for foot joints, and the decision about whether and how to proceed needs to be individualized joint by joint.

Q. What should I share with my treating physician?

Please share specifics — which joint, what agent (steroid or stem cell conditioned media), and how often the injections are planned. If possible, sharing HbA1c and blood glucose readings from the past three months, together with information on oral and injected medications, supports a safer treatment plan.

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【Supervising Physician】Dr. Shin Moriwaki

Member, Japan Society of Aesthetic Surgery (JSAS) / Member, American Academy of Aesthetic Medicine

ECFMG certificate (US medical license qualification)

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📍AVAN TOKYO 銀座再生医療

AVAN TOKYO Ginza Regenerative Medicine

English / 中文 / Tiếng Việt available