Peripheral Nerve Blocks for Surgery About the Knee
A peripheral nerve block is the modality of regional anesthesia in which a local anesthetic is injected around a peripheral nerve, blocking sensory and possibly motor function. Peripheral nerve blocks are becoming an increasingly popular method of analgesia for orthopaedic surgery involving the lower extremity1,2. A regional block is effective for managing perioperative pain, has a low risk profile, and has been shown to reduce opioid use and subsequent side effects1,3,4. The use of peripheral nerve blocks is also associated with early mobilization and participation in physical therapy, decreased length of hospitalization, and improved discharge rates from the ambulatory-care setting1. Early walking has been shown to reduce the risks of infection, deep venous thrombosis (DVT), and arthrofibrosis, the 3 most common causes of hospital readmission following total knee arthroplasty5.