second lumbrical (2L) studies

In some nerve conduction techniques, authors suggested to compare the distal latencies between the compound muscle action potentials (CMAPs) obtained from the abductor pollicis brevis (APB) and second lumbrical (2L) muscles after stimulation of the median nerve at the wrist. In patients with carpal tunnel syndrome (CTS), they observed an increased APB latency due to the conduction block occurred in the carpal tunnel with relative lumbrical sparing. Some authors instead, in order to compare the median and ulnar nerves and assess the motor median nerve conduction in the carpal tunnel, measured the difference in distal latencies obtained from the 2L and interossei (INT) muscles, and they found a statistical significant prolonged lumbrical-interossei latency difference (2L-INT DIFF) in patients with CTS.

M20 (Logigian et al., 1987) BUY CHAPTER
M20 (Logigian et al., 1987) BUY CHAPTER
M27 (Preston and Logigian, 1992) FREE CHAPTER
M27 (Preston and Logigian, 1992) FREE CHAPTER
M36 (Pardal-Fernandez et al., 2012) BUY CHAPTER
M36 (Pardal-Fernandez et al., 2012) BUY CHAPTER