Medial Femoral Cutaneous Nerve Conduction Study with Distal Stimulation and Recording Technique

Objective: To determine the normal values of the newly described distal stimulated medial femoral cutaneous (MFC) nerve conduction study in a healthy population using a wide range of ages and body mass index (BMI) values.
Materials and Methods: Distal stimulated MFC nerve conduction studies were performed bilaterally in 144 healthy volunteers with no peripheral nerve diseases affecting the lower extremities according to clinical and electrophysiological evaluations. The volunteers were divided into three groups according to their age: 18–39.9 years (age 1), 40–59.9 years (age 2), and 60 years and above (age 3). They were also grouped according to their BMI: 24.9 or less (BMI 1), 25–29.9 (BMI 2), and 30 or more (BMI 3).
Results: The mean MFC amplitude was 5.7 μV on both sides, the mean peak latency was 2.8 ms on both sides, and the mean conduction velocity was 61.5 m/s on the right and 61.9 m/s on the left. The MFC amplitudes obtained on the right and left sides were similar, and the mean amplitude difference between sides was 10.1 ± 9.1% (0–56.6). A negative correlation was identified between MFC amplitude and age and BMI.
Conclusion: This study revealed that the newly described distal stimulated MFC sensory nerve conduction study is repeatable and easily applicable.