Posterior Femoral Cutaneous Nerve, Lateral View

Description

Running inferiorly from the sacral plexus beneath the gluteal region, the posterior femoral cutaneous nerve courses deep to gluteal skin and superficial to the proximal hamstring fascia as it descends along the posterior thigh. A lateral view typically places the nerve posterior to the femoral shaft and posterior to the hip joint axis, crossing the ischial region before continuing toward the popliteal fossa. Proximally, its trajectory relates to the bony landmarks of the pelvis and proximal femur, with the nerve lying closer to the posterior border of the greater trochanter than to the anterior thigh compartment. Small cutaneous branches may be suggested along the thigh, reflecting its segmental supply to posterior thigh skin. Clinically, this nerve is a frequent source of diagnostic confusion with sciatica because pain or dysesthesia localizes to the posterior thigh, yet motor testing and deep tendon reflexes remain normal. Location matters. The posterior femoral cutaneous nerve can be irritated by prolonged sitting, local trauma at the ischial tuberosity, or entrapment in deep gluteal syndrome, and it is vulnerable during posterior approaches to the hip and during procedures near the ischiogluteal region where the inferior cluneal branches traverse superficial tissues. A lateral presentation clarifies how superficially it runs compared with the larger sciatic nerve, a distinction that guides both physical examination and targeted injection planning. Use this artwork for gross anatomy teaching on the sacral plexus and posterior thigh cutaneous innervation, for surgical atlases describing posterior hip exposure and incision planning, and for pain medicine or sports medicine materials addressing posterior thigh neuropathic pain without hamstring weakness. It also supports patient education on why sensory symptoms can occur in the posterior thigh despite normal leg strength. Anatomical accuracy verified by SciePro's Medical Advisory Board.