What is the impact of femoral nerve injury on standing ability?

In the context of understanding the impact of femoral nerve injury on standing ability, the inability to stand is a direct consequence of the loss of muscle function innervated by the femoral nerve. The femoral nerve primarily innervates the quadriceps muscle, which is crucial for extending the knee. When standing, the ability to extend the knee is vital for maintaining an upright posture. Without proper function of the quadriceps due to a femoral nerve injury, the affected individual would struggle to generate the force required for standing, particularly as they rely on knee extension to stabilize the limb when in an upright position.

The other options, while related to muscle functions innervated by different nerves or muscle groups, do not specifically address the critical role that the femoral nerve plays in standing. Therefore, the inability to stand directly reflects the functional deficits resulting from injury to this nerve.