Final answer:
Sensory symptoms are less common in radiculopathies, so fewer sensory nerve conductions are performed. Radiculopathies primarily affect motor nerves rather than sensory nerves.
Step-by-step explanation:
The reason fewer sensory nerve conductions are performed when a radiculopathy is suspected is because sensory symptoms are less common in radiculopathies. Radiculopathies primarily affect the motor nerves, which control movement, rather than sensory nerves, which transmit sensory information. Sensory nerve testing can also be more invasive compared to motor nerve testing. Therefore, when a radiculopathy is suspected, the focus is often on testing the motor nerves rather than the sensory nerves.