The femoral nerve, a major peripheral nerve originating from the lumbar plexus (L2-L4), is crucial in the nerve category for both motor and sensory functions of the anterior thigh. It innervates the quadriceps femoris for knee extension and provides sensation to the anterior thigh and medial leg. Clinically, injuries to the femoral nerve can cause significant weakness and sensory deficits, impacting mobility and quality of life.
In medical ultrasound, the femoral nerve is a commonly imaged structure, particularly for regional anesthesia and diagnostic evaluations of neuropathy. Its clear visualization using ultrasound allows for precise nerve blocks, reducing complications and improving patient outcomes. Understanding the sonographic appearance and anatomical course of the femoral nerve is essential for medical professionals performing ultrasound-guided procedures and diagnosing nerve-related conditions.
