Objective: Cervical facet joint (CFJ) pain is commonly seen after whiplash injuries, and is frequently refractory to physical therapy and oral medication. The investigators will evaluate the effectiveness of intra-articular corticosteroid injection for managing whiplash-related CFJ pain. Methods: The investigators will recruit 32 patients with chronic and persistent CFJ pain (≥ 3 on the Numeric Rating Scale \[NRS\]) despite physical therapy and oral medication. Under fluoroscopy guidance, The investigators will inject 10 mg (0.25 mL) of triamcinolone acetonide, mixed with 0.25 mL of 0.125% bupivacaine and 0.5 mL of normal saline. At 1 and 2 months after the injection, pain intensity will be reassessed using the NRS.
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Pain before intervention to be assessed with Numeric Rating Scale
Timeframe: The NRS score will be assessed the day before starting the intervention (pre-treatment).
Pain after intervention to be assessed with Numeric Rating Scale
Timeframe: The NRS score will be assessed 1 month after the intervention
Pain after intervention to be assessed with Numeric Rating Scale
Timeframe: The NRS score will be assessed 2 month after the intervention