A Multicentre, Randomised, Double-blind, Positive-drug-controlled Phase III Clinical Trial on the Efficacy and Safety of CZ1S Peroneal Nerve Block Combined With Popliteal Artery and Posterior Capsule Gap Block for Postoperative Analgesia in Total Knee Arthroplasty.

​ Conditions: Femoral Nerve Block (FNB); Interspace Between the Popliteal Artery and the Capsule of the Knee (IPACK); Total Knee Arthroplasty (TKA) Interventions: Drug: ropivacaine (local infiltration); Drug: CZ1S for Injection Sponsors: Zhejiang Cuize Pharmaceutical...