Infiltration of the local anesthetic between the popliteal artery and capsule of the knee (IPACK).
Indications: Analgesia after knee arthroplasty, cruciate ligament repair, and procedures involving the posterior aspect of the knee.
Goal: Local anesthetic infiltration over the posterior aspect of the femur underneath the popliteal artery.
Transducer: Low-frequency curved or high-frequency linear transducer
Needle: 80-100 mm, 20-22 gauge, short-bevel, insulated stimulating needle
Local anesthetic volume: 15-20 mL