Comparative Trial Via Tranforaminal Approach Versus Epidural Catheter Via Interlaminar Approach

Catheter-targeted ESI via interlaminar access at the C7-T1 level with dexamethasone sodium phosphate 1.5 mL (10 mg/mL) and 1 ml 1% lidocaine (total volume 2.5 mL).

Catheter-targeted ESI via interlaminar access at the C7-T1 level with triamcinolone acetonide 2 mL (40mg/mL) and 1 ml 1% lidocaine (total volume 3 mL).

Transforaminal ESI with dexamethasone 1.5 mL of dexamethasone sodium phosphate in group #1

1 mL of 1% lidocaine as diluent for the steroid in both group #1 and group #2

Transforaminal catheter-targeted ESI with triamcinolone acetonide 2 mL in group #2