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Randomized, Prospective, Placebo-Controlled Double-Blind Study of Dextrose Prolotherapy for Osteoarthritic Thumb and Finger (DIP, PIP, and Trapeziometacarpal) Joints: Evidence of Clinical Efficacy.

Objectives: To determine the clinical benefit of dextrose prolotherapy (injection of growth factors or growth factor stimulators) in osteoarthritic finger joints.

Design: Prospective randomized double-blind placebo-controlled trial.

Settings/Location: Outpatient physical medicine clinic.

Subjects: Six months of pain history was required in each joint studied as well as one of the following: grade 2 or 3 osteophyte, grade 2 or 3 joint narrowing, or grade 1 osteophyte plus grade 1 joint narrowing. Distal interphalangeal (DIP), proximal interphalangeal (PIP), and trapeziometacarpal (thumb CMC) joints were eligible. Thirteen patients (with seventy-four symptomatic osteoarthitic joints) received active treatment, and fourteen patients (with seventy-six symptomatic osteoarthritic joints) served as controls.

Intervention: One half milliliter (0.5 mL) of either 10% dextrose and 0.075% xylocaine in bacteriostatic water (active solution) or 0.075% xylocaine in bacteriostatic water (control solution) was injected on medial and lateral aspects of each affected joint. This was done at 0, 2, and 4 months with assessment at 6 months after first injection.

Outcome Measures: One-hundred millimeter (100 mm) Visual Analogue Scale (VAS) for pain at rest, pain with joint movement and pain with grip, and goniometrically-measured joint flexion.

Results: Pain at rest and with grip improved more in the dextrose group but not significantly. Improvement in pain with movement of fingers improved significantly more in the dextrose group (42% versus 15% with a p value of .027). Flexion range of motion improved more in the dextrose group (p _ .003). Side effects were minimal.

Conclusion: Dextrose prolotherapy was clinically effective and safe in the treatment of pain with joint movement and range limitation in osteoarthritic finger joints.

Published on 07-14-2006