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Prolotherapy vs Cortisone Shot

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Prolotherapy vs Cortisone Shot​

Prolotherapy vs Cortisone Shot

What Every Arizona Patient Should Know

If your knee, elbow, hip, or shoulder has ached for months, you have probably been offered a cortisone shot. You may also have heard about prolotherapy. The prolotherapy vs cortisone shot decision is not a coin flip. They do very different things, and each has a clear place in a well-designed treatment plan. Dr. Mareshah Dunning at Solutions Regenerative Medicine in Gilbert, Arizona uses both, matched to the actual problem in front of her.

What Does a Cortisone Shot Actually Do?

A cortisone shot is a potent anti-inflammatory injection that quiets the inflammatory response inside a joint, tendon sheath, bursa, or nerve compartment. It does not repair tissue. It reduces swelling and calms pain signals so the body can rest, function, or tolerate rehabilitation.

Cortisone is a corticosteroid closely related to the cortisol your adrenal glands make. When placed precisely at the source of inflammation, it can bring dramatic short-to-intermediate relief, often within days and typically lasting weeks to a few months.

Cortisone shines when the pain generator is an active inflammatory process: an inflamed bursa, an acutely irritated nerve root, a flaring autoimmune joint, or a compressed nerve that needs the surrounding swelling to come down.

The tradeoffs with cortisone depend heavily on dose and how often it is repeated. A one-off, well-placed cortisone shot does not carry the same long-term structural risk as a repeated high-dose series. The clearest signal of harm in the research comes from repeated high-dose injections in the same joint over time. The best-known example is a two-year study of 40 mg triamcinolone every three months, which showed measurable cartilage thinning compared to a saline placebo. Occasional cortisone injections at usual clinical doses have not shown the same effect in longer-term cohort studies.

That same pattern holds across tissues. Repeated high-dose injections into or around tendons can transiently weaken tendon tissue and increase rupture risk, while a single well-placed peritendinous dose carries a much smaller signal. Lower doses, longer intervals between injections, and avoiding placement directly into a tendon reduce most of the local risk.

Systemically, cortisone can briefly raise blood sugar (noticeable in patients with diabetes), lower bone mineral density with heavy cumulative exposure, and temporarily suppress adrenal function with repeated or higher doses. These systemic effects, like the local ones, are dose and frequency dependent rather than a reason to avoid any cortisone injection outright. This is why the SRM approach is to use the lowest effective dose, space injections out when they are needed, and choose cortisone selectively rather than reflexively.

What Is Prolotherapy, and How Is It Different?

Prolotherapy is a dextrose (sugar water) injection placed at a specific pain generator to support repair, calm irritated nerves, and improve the local healing environment. Unlike cortisone, it works with the body’s repair process rather than suppressing inflammation.

The older explanation for prolotherapy was that dextrose provokes controlled inflammation, which then triggers healing. Newer research has updated that picture. The healing response runs mainly through specific repair pathways at the cell level, with inflammation playing a smaller supporting role. At classical concentrations placed into a joint, ligament, or tendon, this supports repair of the connective tissue. At lower concentrations placed alongside an irritated nerve, dextrose calms the nerve and supports healing in its own right.

Prolotherapy is done as a series, with the plan matched to the type of injection. For classical prolotherapy into joints, ligaments, or tendons, the typical plan is 3 to 6 sessions spaced 3 to 6 weeks apart. For perineural work with lower concentration dextrose, sessions are often placed weekly at first and spaced out as the nerve settles. Unlike cortisone, prolotherapy is not capped at a fixed number of injections per year. The limit is based on how the tissue responds, not an arbitrary ceiling.

When Does a Cortisone Shot Make Sense?

Cortisone remains the right tool for acute inflammatory flares, autoimmune joint pain, an inflamed or compressed nerve (central nerve root irritation or peripheral entrapment such as carpal tunnel), and situations where a diagnostic then therapeutic dose can help confirm the pain generator.

At Solutions Regenerative Medicine, a cortisone injection is not a default. It is a deliberate choice for problems where anti-inflammatory suppression is the mechanism the body actually needs. Common examples include an acutely swollen bursa, a nerve root inflamed by disc irritation, or an acute flare in an autoimmune joint.

Cortisone can also serve as a diagnostic-therapeutic tool at SRM. A carefully placed cortisone injection can confirm whether the suspected structure is the true pain generator. If pain drops sharply for the expected duration, the target was correct. That information then shapes whether the next visit is a repeat cortisone, a shift to prolotherapy for durable repair, or an escalation to PRP or another biologic.

When Is Prolotherapy the Better Fit for the Prolotherapy vs Cortisone Shot Question?

Prolotherapy is a better fit for ongoing joint, tendon, and ligament problems that have not healed on their own. Mild to moderate knee osteoarthritis is where the strongest research sits. Prolotherapy is also used in the hip, shoulder, ankle, and the small joints of the hands and feet, with evidence that is growing but less established than for the knee. Other common examples include tennis elbow, heel pain from plantar fasciitis, Achilles tendinopathy, chronic low back and SI joint pain, and pinched or compressed nerves such as carpal tunnel syndrome.

Dextrose does not carry the dose-dependent tissue risks that repeated high-dose cortisone can. Because it works with repair pathways rather than suppressing them, it can be repeated across a series without the same structural concern that comes with repeated cortisone in the same joint or tendon. This matters most for patients with degenerative conditions who might otherwise cycle through multiple cortisone shots per year.

The side effect profile is also different. Cortisone can transiently raise blood sugar, lower bone mineral density with heavy cumulative exposure, briefly suppress adrenal function, and in superficial injections cause skin lightening or local fat atrophy. Prolotherapy carries none of these systemic effects. The main expected effect from prolotherapy is about 72 hours of soreness at the injection site as the healing signal engages.

Prolotherapy is not a fit for every problem. It is not the right choice for acute fractures, active infection at the planned injection site, uncontrolled bleeding disorders, or a joint that has already collapsed and needs a mechanical solution.

Can Cortisone and Prolotherapy Be Part of the Same Treatment Plan?

Yes, but not in the same visit. Cortisone and prolotherapy have competing goals, so the clinic does not combine them on the same day. Cortisone suppresses inflammation. Prolotherapy relies on controlled repair signaling that inflammation is part of. Giving them together blunts both.

They can, however, be sequenced in the same overall treatment plan. Either injection can serve as a diagnostic step when combined with a local anesthetic. A diagnostic cortisone injection can confirm whether the suspected structure is driving the pain and settle an acute flare. A diagnostic prolotherapy injection can confirm the target and start the regenerative series. Which one leads depends on the tissue, the severity, and what mechanism the body actually needs.

Injections are spaced at least a week apart, and the standard prolotherapy series interval of 3 to 6 weeks between sessions is used for most patients. Timing between a cortisone shot and a prolotherapy session is chosen to let the steroid signal clear so the regenerative response is not blunted.

For patients who want anti-inflammatory benefit without the dose-dependent risks of cortisone, SRM also offers A2M (alpha-2-macroglobulin), a regenerative anti-inflammatory injection that has shown comparable or better results than cortisone in a comparative study, and can also be used diagnostically when paired with local anesthetic.

What About Cost and Insurance?

Solutions Regenerative Medicine is a superbill practice, which means neither cortisone nor prolotherapy is billed directly to insurance at the visit. Both are paid at the time of service, and patients receive a superbill they can submit to their insurance for possible reimbursement. Cortisone injections are often eligible for partial reimbursement when the standard orthopedic indication applies. Prolotherapy is generally classified as investigational by insurers and reimbursement is less likely.

Cost should not be the only factor. A cortisone shot is inexpensive at the visit but can lead to more visits over time, and repeated dosing carries its own tissue risk. A prolotherapy series has more upfront cost but is often chosen by patients who want to move away from repeated cortisone dosing. HSA funds can generally be applied.

Why Choose Dr. Dunning at Solutions Regenerative Medicine in Gilbert, Arizona?

Dr. Dunning offers both cortisone and prolotherapy with ultrasound and fluoroscopy guidance in the greater Phoenix area of Arizona, so the treatment can be chosen based on what the tissue needs rather than what the clinic happens to be set up for.

Dr. Mareshah Dunning, NMD, is a Registered Musculoskeletal Sonographer through the APCA, faculty lead of the Regenerative Medicine Honors Track at Sonoran University of Health Sciences, and completed a fluoroscopy focused residency under an interventional anesthesiologist and general surgeon at the Neil Riordan Center. She serves patients across Gilbert, Chandler, Mesa, Queen Creek, and the greater Phoenix area of Arizona.

The SRM approach is deliberate: cortisone when the mechanism the body needs is anti-inflammatory suppression, prolotherapy when the mechanism is repair, and both in sequence when a diagnostic question needs to be answered before a longer plan.

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Frequently Asked Questions

What is the difference between prolotherapy and a cortisone shot?

Prolotherapy and cortisone shots do different things. Prolotherapy is a dextrose injection that supports tissue repair, while a cortisone shot is a corticosteroid injection that suppresses inflammation. Prolotherapy is used as a series to build durable improvement in joints, tendons, ligaments, and nerves. Cortisone provides shorter term relief by calming an active inflammatory process. They are not interchangeable, and the right choice depends on what mechanism the body actually needs.

Prolotherapy has stronger long-term durability data for knee arthritis, while cortisone works faster in the short term. A cortisone shot usually provides a few weeks to a few months of relief. Prolotherapy builds gains across a 3 to 6 session series, with knee osteoarthritis research showing improvement at 52 weeks and sustained benefit out to 2.5 years in follow-up data. Prolotherapy is often chosen by patients who want to move away from repeated cortisone dosing.

A cortisone shot typically lasts a few weeks to a few months. Prolotherapy is not a single shot treatment and gains build across a 3 to 6 session series spaced 3 to 6 weeks apart. In knee osteoarthritis research, prolotherapy improvement has been documented out to 52 weeks and sustained in follow-up out to 2.5 years in some patients.

Cortisone shots can damage a joint, but the risk depends on dose and how often they are repeated. A one-off cortisone shot has not been shown to cause the long-term structural changes that repeated high-dose injections can. The clearest research on harm comes from repeated 40 mg triamcinolone every three months for two years in knee osteoarthritis, which showed cartilage thinning compared to a saline placebo. Occasional cortisone injections at usual doses have not shown the same effect in longer-term cohort studies.

Yes, the risk of a cortisone shot depends heavily on where it is placed. Injections directly into cartilage-bearing joints carry a dose-dependent risk of cartilage thinning with repeated use. Injections directly into a tendon can weaken the tendon and increase rupture risk, which is why peritendinous placement around the tendon is preferred over placement into the tendon itself. Superficial injections through thin skin, such as trigger finger, lateral epicondyle, or De Quervain, can cause local fat atrophy or skin lightening, especially in patients with darker skin. Injections around nerves are generally lower risk when a nonparticulate steroid like dexamethasone is used. Image guidance improves accuracy and reduces the chance of placing steroid in the wrong tissue.

Both are generally well tolerated. Cortisone can cause a steroid flare in a minority of patients, with soreness that can last 7 to 10 days before settling. Prolotherapy commonly produces about 72 hours of expected soreness at the site as the healing signal engages. Neither injection requires sedation.

Yes, you can get prolotherapy after a cortisone shot. Timing is chosen so the residual anti-inflammatory effect of cortisone does not blunt the healing signal from prolotherapy. Dr. Dunning builds the sequence based on when the last cortisone injection was placed, the type and dose used, and how the tissue responded.

Solutions Regenerative Medicine is a superbill practice, so neither injection is billed directly to insurance. Patients pay at the time of service and receive a superbill they can submit for possible reimbursement. Cortisone is often eligible for partial reimbursement for standard orthopedic indications. Prolotherapy is generally classified as investigational and reimbursement is less likely. HSA funds can typically be applied.

The right choice depends on what is driving your pain, how long it has been going on, and what you want from treatment. If the pain generator is an active inflammatory process that needs to be quieted quickly, cortisone is often the better fit. If the goal is durable repair of a joint, tendon, ligament, or nerve, prolotherapy is usually the better fit. A consultation at Solutions Regenerative Medicine in Gilbert, Arizona includes a full history, focused exam, and diagnostic ultrasound so the injection matches the problem.

Ready to take the next step?

Dr. Mareshah Dunning at Solutions Regenerative Medicine in Gilbert, Arizona offers personalized consultations to determine whether prolotherapy, a cortisone injection, or a different approach is the right fit for you. Book a consultation with Dr. Mareshah Dunning at Solutions Regenerative Medicine in Gilbert, Arizona. Book online or call (480) 995-9131.

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