Bone Marrow “Cell” Injection (BMAC): Harnessing Your Body’s Natural Healing Cells

Bone Marrow Aspirate Concentrate (BMAC) is a regenerative, image-guided procedure that uses a patient’s own bone marrow cells to help reduce inflammation and support tissue healing.

It’s designed for patients with chronic spine or joint pain who want to avoid surgery and promote natural repair using their own biologic resources.

Bone Marrow “Cell” Injection (BMAC): Harnessing Your Body’s Natural Healing Cells

Bone Marrow Aspirate Concentrate (BMAC) is a regenerative, image-guided procedure that uses a patient’s own bone marrow cells to help reduce inflammation and support tissue healing. It’s designed for patients with chronic spine or joint pain who want to avoid surgery and promote natural repair using their own biologic resources.

What Is BMAC?

Bone marrow contains a rich supply of cells, including platelets and progenitor cells that release
growth factors involved in healing.

During the procedure, a small sample of bone marrow is collected — usually from the back of
the hip (iliac crest) — and then concentrated in a sterile centrifuge.

The resulting concentrate (BMAC) is then re-injected into the target area under fluoroscopic or
ultrasound guidance.

Why It’s Done

BMAC may be recommended to help support healing in:

  • Degenerative Disc Disease or joint arthritis

  • Chronic facet or sacroiliac joint pain

  • Tendon or ligament injuries around the spine
    or pelvis

  • Delayed tissue recovery after injury or procedure

The goal is to enhance the body’s own healing capacity and decrease pain without
the need for synthetic implants or major surgery.

How the Procedure Works

  • Preparation – You’ll be awake and comfortable with local anesthesia and light sedation if needed.

  • Bone Marrow Collection – A small needle is placed into the back of the hip bone to withdraw 
a sample of marrow.

  • Processing – The sample is spun in a sterile centrifuge to concentrate the healing cells and growth factors.

  • Injection – Under X-ray or ultrasound guidance, the concentrate is precisely injected into the target area of the spine or joint.

The entire process takes about 60–90 minutes and is performed
on an outpatient basis.

What to Expect Afterward

  • Mild soreness at the hip or injection site for 

    2–3 days

  • Avoid strenuous activity for 48 hours; light movement encouraged thereafter

  • Improvement develops gradually over 4–8 weeks as healing occurs

  • Some patients benefit from a single procedure; others may receive a series depending on response

Safety and Risks

Because BMAC uses your own cells, it eliminates the risk of rejection or disease transmission.

Possible effects include:

  • Temporary soreness at the donor or injection site

  • Minor bruising or stiffness

  • Rare infection (minimized by sterile technique)

BMAC is a biologic procedure, not a surgery; no hardware or implants are used.

Low Back Frequently Asked Questions

01. What is a facet ablation (RFA), and how is it different from diagnostic blocks?

Answer: Blocks test the pain source; ablation stops the nerve signal.
A medial branch block temporarily numbs a spinal joint to confirm the pain generator. If it works, radiofrequency ablation (RFA) uses heat to deactivate that small nerve for 6–12 months. The joint stays stable, and pain often lessens dramatically.
Lumbar | Interventional Spine | RFA

02. How long does a radiofrequency ablation (RFA) last, and can it be repeated?

Answer: Relief often lasts 6–12 months and the procedure can be repeated safely.
After an RFA, the tiny sensory nerves that send pain signals grow back slowly. Many patients enjoy meaningful relief for 6 months to a year. If the pain returns, a repeat ablation can usually be performed using the same approach. Regular stretching and strengthening help extend the benefit. Lumbar | Cervical | Interventional Spine | RFA

03. Why does my low back hurt after sitting or long drives?

Answer: It’s usually from facet-joint stress or weak postural muscles.
Sitting flexes the lumbar spine and compresses facet joints and discs, especially if the core is de-conditioned. Over time, this posture leads to inflammation and stiffness. Supportive cushions, regular breaks, and targeted therapy for core and glute muscles often relieve symptoms.
Lumbar | Ergonomics | Rehab

04. What is a diagnostic discogram, and why is it rarely done now?

Answer: It injects dye into spinal discs to find the pain source but carries risks.
Discography involves pressurizing discs with contrast dye while monitoring pain response. It was once common before spine surgery but is now less used because it can worsen disc damage and cause infection. Modern MRI and targeted nerve blocks provide safer diagnostic insight.

Diagnostics | Lumbar | Interventional Spine

05. Why do some people have chronic back pain even after “successful” fusion surgery?

Answer: Adjacent levels often wear out faster.
Spinal fusion stabilizes one level but transfers stress to the discs and joints above and below, leading to adjacent segment disease. Scar tissue, muscle atrophy, and nerve irritation can also persist. Nonsurgical options like PRP or radiofrequency treatment can help preserve the surrounding spine.
Lumbar | Post-Surgery | Interventional Spine

06. What are “adjacent segment disease” and “hardware failure” after spine surgery?

Answer: They mean nearby levels or implants break down over time.
After fusion, joints next to the fused area compensate by moving more, sometimes developing arthritis or stress fractures. Hardware fatigue or loosening can also occur years later. Regular imaging helps detect changes early; pain-management injections or strengthening programs can often delay revision surgery.
Lumbar | Cervical | Post-Surgery | Spine Degeneration

07. How do you tell if leg pain is from the back or from a knee or hip problem?

Answer: Back-related pain travels below the knee; joint pain usually stays local.
Nerve compression in the spine typically causes sharp, shooting pain that radiates past the knee or into the foot. Hip or knee arthritis usually creates aching localized pain or stiffness without tingling. Imaging and physical-exam maneuvers help determine whether the source is spinal, joint, or both.
Diagnostics | Lumbar | Hip | Knee

08. What is an epidural steroid injection and what does it do?

Answer: It delivers anti-inflammatory medicine around pinched nerves.
Guided by X-ray, a thin needle places medication into the epidural space of the spine. The steroid reduces swelling around irritated nerves from a herniated disc or arthritis. Relief may last weeks to months and can allow better participation in physical therapy.
Interventional Spine | Epidural | Lumbar | Cervical

09. What are red-flag symptoms that spine pain is not just mechanical?

Answer: Fever, unexplained weight loss, numbness, or bladder issues.
Warning signs include constant pain at rest, night sweats, progressive weakness, loss of control of urine or stool, or recent infection. These could signal infection, tumor, or severe nerve compression and need emergency evaluation.
Safety | Lumbar | Cervical | Emergency

10. How long should I wait before considering spine surgery?

Answer: Only after conservative care has clearly failed and red flags are excluded.
Most mechanical back or neck pain improves with guided injections, therapy, or biologic repair within 3–6 months. Surgery is reserved for progressive weakness, structural instability, or nerve compression causing loss of function. A second opinion is always appropriate before proceeding.
Lumbar | Cervical | Surgery Decision

11. What is a “facet joint,” and why can it cause back or neck pain?

Answer: It’s a small stabilizing joint behind each vertebra that can become arthritic.
Facet joints allow bending and twisting. With aging or injury, they may develop arthritis and inflammation that causes sharp localized pain, often worse when leaning backward or standing long periods. Facet injections or RFA can calm these joints for months at a time.
Lumbar | Cervical | Anatomy | Interventional Spine

12. When should I seek emergency care after a neck or back injury?

Answer: Sudden weakness, numbness, fever, or bladder/bowel changes.
Go to the ER immediately for severe pain with loss of strength, incontinence, high fever, or trauma with head injury. These could indicate nerve or spinal-cord compression, infection, or fracture. Early treatment prevents permanent damage.
Cervical | Lumbar | Emergency | Safety

13. What is a “nerve root block,” and how is it different from an epidural?

Answer: A nerve-root block targets one specific nerve, while an epidural bathes several.

A selective nerve-root block (SNRB) uses live X-ray to deliver medication directly around one irritated spinal nerve. It helps confirm which nerve causes the pain and can calm inflammation at that precise level. Epidural injections are broader, covering multiple nerves at once.

Interventional Spine | Diagnostics | Lumbar | Cervical

14. How can I tell if my hip pain is coming from the joint or my back?

Answer: Hip arthritis hurts in the groin; back problems radiate to the leg.
Hip joint disease often causes deep aching in the groin or front thigh, worse with walking or stairs. Lumbar nerve compression tends to cause burning or tingling down the leg. Diagnostic injections into the hip or spine can confirm the true source.
Hip | Lumbar | Diagnostics | Joint Pain

15. Can regenerative medicine help spine patients who already have hardware or fusions?

Answer: Yes, but injections are placed around not into the fused levels.
PRP and bone-marrow concentrate can reduce inflammation in joints and ligaments next to a fusion where new pain develops. These procedures don’t interact with the hardware itself. Most patients benefit from improved flexibility and less reliance on pain medication.

Spine | Post-Surgery | Orthobiologics | Interventional Spine

When to See a Specialist

If you have chronic back or joint pain and want to explore non-surgical, biologic options, Bone Marrow Cell Therapy may be right for you.

Our physicians use fluoroscopy and ultrasound to deliver treatments with maximum precision and safety.

Minimally invasive spine & joint care.
This page is informational only. No medical advice. Book on our secure intake portal.

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