Three-phase Bone Scintigraphy Can Predict the Analgesic Efficacy of Ketamine Therapy in CRPS.

Objectives: The efficacy of ketamine in relieving complex regional pain syndrome (CRPS) lacks predictive factors. The value of three-phase bone scintigraphy (TPBS) was assessed for this purpose.

Materials And Methods: TPBS was performed in 105 patients with unilateral, focal CRPS of type 1 before 5 days of ketamine infusions.