How would you assess the neurodynamics of the saphenous nerve?

• A. Passive Knee Flexion and Extension
• B. Passive Hip Flexion, Knee Extension, DF, and Eversion
• C. Active Hip Abduction and Adduction
• D. Manual Muscle Testing

Answer: (B)

Assessing the neurodynamics of the saphenous nerve involves understanding its anatomical course and the movements that can potentially place tension on it. The saphenous nerve is a terminal branch of the femoral nerve and courses down the medial aspect of the leg and foot.

The correct answer, which includes passive hip flexion, knee extension, dorsiflexion (DF), and eversion, is a comprehensive method to evaluate the neurodynamics effectively. This sequence of movements sequentially elongates the structures along the path of the saphenous nerve, creating tension that may highlight any neurodynamic dysfunction or restrictions in mobility. Specifically, hip flexion and knee extension primarily improve the mechanical tension in the saphenous nerve while DF and eversion further elongate the nerve as it traverses the lower limb.

Other assessment methods listed may not adequately stress the saphenous nerve in a manner that reveals potential neurodynamic deficits. For example, while passive knee flexion and extension can offer insights into the range of motion of the knee joint, they do not specifically target the saphenous nerve's entire pathway and potential sites of entrapment or irritation. Active hip movements, such as abduction and adduction,