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Abstract Adequate pain management can be difficult to achieve for some patients following knee surgeries. Poor postoperative analgesia is associated with increased complications, length of stay, and cost. Although opioid can be used for severe pain, long-term opioid use may increase the risk of knee revision in the first year. Therefore, pain control should be balanced with opioid consumption following knee surgeries. Adductor canal blocks can provide analgesia to the anteromedial and intra-articular aspects of the knee without inducing quadriceps weakness. When this block is used in isolation, moderate-to-severe posterior knee pain was common. Although sciatic nerve blocks offer analgesia to the posterior aspect of the knee, motor weakness is unavoidable. To help avoid this complication, the infiltration between the popliteal artery and the capsule of the posterior knee block was developed to target the posterior terminal sensory fibers without affecting the motor fibers. |