C. **Non-motor-sparing blocks**:


nerve blockade also causes foot drop, which may mask the surgically injured common peroneal nerve in severe valgus deformity.

• **Selective tibial nerve block***: The tibial nerve can be selectively blocked in the popliteal region to avoid unwanted foot drop due to the common peroneal nerve (CPN) blockade. It* presents a viable alternative to sciatic *nerve block.* However, the proximal spread of local anesthetic (LA) showed involvement of CPN, which is unwanted and not solving the purpose. This block is given as an adjunct to the femoral nerve block to provide analgesia for total knee replacement surgeries.
