Which nerve is most commonly affected in cases of left groin pain radiating down the leg?

• A. Tibial Nerve
• B. Saphenous Nerve
• C. Peroneal Nerve
• D. Radial Nerve

Answer: (B)

In cases of left groin pain radiating down the leg, the saphenous nerve is most commonly implicated. The saphenous nerve is a branch of the femoral nerve and is primarily responsible for supplying sensation to the medial aspect of the leg and foot. When there's an issue that causes irritation or compression in the lumbar or sacral plexus region, such as a herniated disc or spinal stenosis, this can lead to referred pain in the groin area, often accompanied by radiating pain along the distribution of the saphenous nerve.

This nerve is particularly noteworthy because its path can be affected by conditions that influence the hip joint or lumbar spine, both of which can lead to symptoms described as groin pain extending down the leg. Understanding the anatomy and function of the saphenous nerve helps clinicians identify and treat conditions associated with these symptoms effectively.

Other nerves mentioned, such as the tibial and peroneal nerves, are more involved in the lower leg and do not typically present with groin pain. The radial nerve primarily serves the upper limb and is not involved in groin or leg pain. Therefore, recognizing the role of the saphenous nerve in this context is crucial for accurate diagnosis and