The Science: Three Phases of Prolotherapy-Induced Healing
Prolotherapy works by recapitulating the body's natural wound-healing cascade in a controlled, targeted manner.
Phase 1: Inflammatory (Days 1-7)
The hypertonic dextrose solution causes brief osmotic cell lysis at the injection site, triggering a controlled inflammatory response. Neutrophils and macrophages arrive, clearing debris and releasing cytokines that signal the next phase. This is the soreness patients feel after treatment-it is therapeutic, not harmful.
Phase 2: Proliferative (Weeks 1-6)
Active tissue remodeling phase. Fibroblasts are recruited to the site and begin producing new collagen. Growth factors including TGF-B and PDGF stimulate extracellular matrix production. New blood vessels form (angiogenesis), improving nutrient delivery to the healing tissue. The ligament begins to thicken and strengthen.
Phase 3: Remodeling (Weeks 6-12+)
The initially disorganized collagen is gradually reorganized along lines of stress, producing tissue that is functionally stronger. Tensile strength increases progressively. This is why improvement continues for months after the final treatment session.
Spine Conditions Where Prolotherapy Excels
- Sacroiliac Joint Dysfunction - This is prolotherapy's premier spine application. The SI joint ligament complex-dorsal SI, interosseous, sacrotuberous, iliolumbar-responds consistently and often dramatically to prolotherapy.
- Chronic Spinal Sprains and Strains - The interspinous, supraspinous, and iliolumbar ligaments regain tensile strength through prolotherapy.
- Costovertebral Rib Pain - The radiate and costotransverse ligaments stabilize the rib-spine junction when strengthened by prolotherapy.
- Piriformis Syndrome - Prolotherapy to the sacrotuberous and SI ligaments addresses biomechanical contributors.
- Pars Stress Reaction - Periosteal prolotherapy supports bone healing and stabilizes adjacent structures.
The Prolotherapy Procedure
Treatment begins with precise identification of the affected ligament attachment sites through physical examination and, when indicated, imaging. The injection uses a fine needle to deliver a solution of 12.5-25% dextrose (with local anesthetic for comfort) directly to the ligament entheses-the points where ligament attaches to bone. Multiple injection points are treated per session to address the complete ligamentous complex.
A typical session takes 20-40 minutes and involves 10-30 injection points depending on the area treated. Post-treatment soreness lasting 2-3 days is expected and reflects the therapeutic inflammatory response. We recommend avoiding NSAIDs during the first week after treatment to allow the inflammatory cascade to proceed undisturbed.
Improvement is cumulative-each session builds on the structural gains of the previous one. We monitor progress through pain assessment and functional measures.
Prolotherapy and PRP: Complementary Approaches
Prolotherapy and PRP work through different but complementary mechanisms. Prolotherapy initiates a dextrose-induced inflammatory cascade that recruits fibrocytes. PRP delivers concentrated growth factors that accelerate and enhance tissue repair. For many patients, we use both: prolotherapy for the ligamentous attachments and PRP for the joint or disc where growth factor delivery is the priority. The combination-addressing multiple tissue types through different biological pathways-often produces more complete results than either treatment alone.