Stem Cell Therapy for Osteoarthritis-Related Chronic Pain
Osteoarthritis pain results from deterioration of cartilage at articulations
A new therapy for patients with osteoarthritis (OA) experiencing chronic joint pain of wrists, elbows, shoulders, hips and knees has been developed by Mark D Wagner, MD, a primary care physician, specializing in sports medicine, based in Seattle.
OA is the most prevalent joint disorder in the United States, affecting 13% of women and 10% of men 60 years and over.1 Age, obesity and female gender are risk factors, and as the population is growing older and increasingly overweight, the need for new treatments for this disorder is becoming paramount.2 For most OA patients, pain is the primary reason for seeking medical care, and often precedes disability, as OA is the most common indication for total knee and hip replacement surgery.3 OA pain results from deterioration of cartilage at articulations, which can no longer act as a cushion between bones, leading to bone grinding.
Dr Wagner's treatment is aimed at patients who have lost a significant range of motion in certain joints, and are experiencing substantial pain levels as a result of mild to moderate OA. This treatment consists in an autologous cells transplant: the patient's Platelet Rich Plasma, bone marrow cells and fat cells are collected. Platelets are purified from blood samples; bone marrow and adipose stem cells are concentrated by centrifugation. The combination is then injected into the affected joint.
Activated platelets release a number of growth factors, including platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), basic fibroblast growth factor (FGF), epidermal growth factor (EGF), which are thought to contribute to the healing process4, although evidence for such a claim is slim. 5 Stem cells isolated from bone marrow have been shown to efficiently support repair of injured ligaments and tendons6, and adipose stem cells have some benefits for cartilage repair.7
This procedure, which falls under the category of regenerative medicine and is minimally invasive and mostly painless, has shown promising results, according to Dr Wagner who stated that the patients he has treated are experiencing reduced levels of pain, starting 3 months after the procedure. Dr Wagner is hopeful they will regain a normal range of motion within a year.
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