Marc Darrow, MD., JD. is the medical director and founder of the Darrow Stem Cell Institute in Los Angeles, California. With over 20 years experience in regenerative medicine techniques and the treatment of thousands of patients, Dr. Darrow is considered a leading pioneer in the non-surgical treatment of degenerative Musculoskeletal Disorders and sports related injuries. He is one of the busiest Regenerative Medicine doctors in the world.

Dr. Darrow has co-authored and continues to co-author leading edge medical research including the use of bone marrow derived stem cell therapy for shoulder, hip, knee and spinal disorders. He also comments and writes on research surrounding the treatment of chronic tendon injury, ankle and foot pain, elbow, hand and finger pain.

About Us The Darrow Stem Cell Institute

Over the years Dr. Darrow has made it his mission to help get people out of pain and to do so without surgery. To achieve this goal, Dr. Darrow and the staff of the Stem Cell institute guide patients through a hands on approach to healing. This includes reliance of physical examination over MRI and a realistic healing program designed around Bone Marrow Derived Stem Cells instead of surgery.

• Dr. Darrow himself suffered from a failed shoulder surgery that lead him unto this path of healing.
• Dr. Darrow studied in medical school as a surgeon

Research from the Darrow Stem Cell Institute: Knee pain and osteoarthritis

In June of 2018, our research team published the paper Short-Term Outcomes in Treatment of Knee Osteoarthritis With 4 Bone Marrow Concentrate Injections. This research appeared in the medical journal: Clinical medicine insights. Arthritis and musculoskeletal disorders.

In this research we were able to conclude that following treatment, short-term outcomes demonstrated that patients experienced less pain and were able to perform daily activities with less difficulty after the first Bone Marrow Concentrate (stem cell) injection and reported additional benefit with each subsequent treatment.

• We incorporated this research into our article: Stem cell therapy for knee osteoarthritis
• You can read this research in its entirety at the US National Library of Medicine online:

Other research that we will soon publish on the subject of knee osteoarthritis include: Treatment of Chronic Knee Pain with Platelet-Rich Plasma Injections

• You can learn more about this treatment at my article: Platelet-Rich Plasma Injections for knee osteoarthritis

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Research from the Darrow Stem Cell Institute: Hip pain and osteoarthritis

In August 2018, our research team published the paper Short-Term Outcomes of Treatment of Hip Osteoarthritis With 4 Bone Marrow Concentrate Injections: A Case Series. This research appeared in the medical journal: Clinical medicine insights. Case reports.

In this study, we were able to document that the patients in this case series experienced decreased pain and improved functionality compared with baseline. On average, patients experienced successive decreases in resting and active pain after each treatment. Patients also experienced a mean increase in total overall improvement percentage and functionality score after subsequent treatments. Prior to Bone Marrow Concentrate (stem cell) treatment, 2 of the 4 patients had been advised to undergo total hip replacement. Following treatment, neither patient considered surgery.

• We incorporated this research into our article: Can Stem Cell Therapy help you avoid a hip replacement surgery? 
• You can read this research in its entirety at the US National Library of Medicine online:

Other research that we will soon publish on the subject of hip osteoarthritis include:

• Comparing Outcomes of Spun and Whole Bone Marrow Concentrate injections in Hip and Shoulder Pain Patients
• Treatment of Chronic Hip Pain with Platelet-Rich Plasma Injections.

You can learn more about this treatment at my article: Treatment of Hip Osteoarthritis with Platelet-Rich Plasma Injections

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Research from the Darrow Stem Cell Institute: Lower back pain

In July 2018, our research team published the paper Treatment of Lower Back Pain with Bone Marrow Concentrate. This research appeared in the medical journal: Biomedical Journal of Scientific & Technical Research.

This is the first reported study treating low back with Bone Marrow Concentrate injections to the ligaments, fascia, and muscles surrounding the lumbar spine. It is promising that at one-year follow-up, 100% of patients in this study experienced a decrease in resting and active pain in addition to performing daily activities with less difficulty.

• All four patients experienced sustained or increased improvement at annual follow-up compared to short-term follow-up.
• On average, patients reported:
  • 80% decrease in resting pain,
  • 78% decrease in active pain,
  • and a 41% increase in functionality score.
• Additionally, patients reported a mean 80% total overall improvement following
  treatment.
• The two patients who considered surgery prior to BMC treatment no longer felt the need for it.
• These results provide evidence that appropriately chosen patients with LBP may find relief with BMC injections.

We incorporated this research into our article: Treatment of Lower Back Pain with Bone Marrow Concentrate

• You can read this research in its entirety at the Journal’s website.

Other research that we will soon publish on the subject of lower back pain include

• Treatment of Chronic Low Back Pain with Platelet-Rich Plasma Injections

For more on this subject, see my article Platelet-Rich Plasma Injections for Chronic Low Back Pain

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Research from the Darrow Stem Cell Institute: Shoulder Pain

• Studies waiting publication in medical publication:
  • Treatment of Shoulder Osteoarthritis and Rotator Cuff Tears with Spun and Whole Bone Marrow Concentrate Injections
  • Comparing Outcomes of Spun and Whole Bone Marrow Concentrate injections in Hip and Shoulder Pain Patients

In these papers we have documented the positive aspects of bone marrow derived stem cell therapy for patients who have shoulder osteoarthritis.

Articles and research concerning shoulder injury on this site:

Dr. Darrow comments on the latest research impacting patients with the following shoulder disorders:

• Stem cell therapy for shoulder osteoarthritis
• Shoulder Labrum tear | Labral repair and biceps tenodesis
• Shoulder Impingement – Subacromial shoulder pain | Surgery not the answer
• Chronic shoulder instability and dislocation

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Do you have questions? Ask Dr. Darrow

A leading provider of stem cell therapy, platelet rich plasma and prolotherapy
11645 WILSHIRE BOULEVARD SUITE 120, LOS ANGELES, CA 90025

PHONE: (800) 300-9300 or 310-231-7000

Stem cell and PRP injections for musculoskeletal conditions are not FDA approved. We do not treat disease. We do not offer IV treatments. There are no guarantees that this treatment will help you. Prior to our treatment, seek advice from your medical physician. There is controversy in the medical community about whether umbilical cord blood stem cells are alive or dead, and which type of stem cell may be appropriate.

Neither Dr. Darrow, nor any associate, offer medical advice from this transmission. This information is offered for educational purposes only. The transmission of this information does not create a physician-patient relationship between you and Dr. Darrow or any associate. We do not guarantee the accuracy, completeness, usefulness or adequacy of any resource, information, product, or process available from this transmission. We cannot be responsible for the receipt of your email since spam filters and servers often block their receipt. If you have a medical issue, please call our office. If you have a medical emergency, please call 911.