Fig. 3From: Motor-sparing peripatellar plexus block provides noninferior block duration and complete block area of the peripatellar region compared with femoral nerve block: a randomized, controlled, noninferiority studySuperimposed images of the block areas in the lower limbs (standard left lower limbs) of the two groups. A PP group; B FN group. The block areas are shown in red. The blue line is the incision line for TKA.Back to article page