Multimodal Drug Infiltration in Total Knee Arthroplasty: Is Posterior Capsular Infiltration Worth the Risk?

0.5% bupivacaine 100 mg, morphine sulfate 5 mg, 0.1% epinephrine 0.6 mg, and ketorolac 30 mg mixed NSS up to 100 mL

Drug injection at Anterior soft tissue (25 mL)+Medial gutter area (25 mL)+Lateral gutter area (25 mL)+Posterior capsular infiltration (25 mL)

Drug injection at Anterior soft tissue (34 mL)+Medial gutter area (33 mL)+Lateral gutter area (33 mL