Within the popliteal fossa the tibial nerve branches off the medial genicular nerves
The lateral branches come from the peroneal nerve
The genicular nerves are sensory nerves that supply the capsule and ligaments of the knee joint
A popliteal sciatic nerve block proximal to the sciatic nerve bifurcation blocks the genicular nerves branching off the tibial nerve. I.e. the tibial innervation of the knee is blocked by a popliteal sciatic nerve block
The green colour depicts the genicular nerves which branch off from the tibial nerve (to the left) and the common peroneal (to the right) and innervate the knee
