Persistent sciatic artery represents a continuation of the internal iliac artery into the thigh through the greater sciatic foramen below the piriformis muscle, through the thigh, alongside the sciatic nerve.

This case includes the two types of persistent sciatic artery:

• the complete type on the right side, where the persistent sciatic artery is continuous as the popliteal artery, while the superficial and deep femoral arteries appear small
• the incomplete type on the left side, where the persistent sciatic artery diminishes toward the calf, while the superficial femoral artery continues as the popliteal artery

Additionally, there is a right partially thrombosed pseudoaneurysm of the sciatic artery opposite the ischial tuberosity, which is a common finding secondary to repeated trauma from sitting and hip flexion-extension.