Bilateral peroneal palsy after weightlifting.

In a 48-year-old otherwise healthy man, a bilateral common peroneal palsy was diagnosed clinically and neurophysiologically. He reported on strength training with weights in both arms, lifting the weights and his upper body from a deep squatting position with broadly positioned legs akimbo in a hitherto unusual intensity. Regarding the pathophysiological mechanisms, 2 options are considered: first, stretching of the nerve at the fascia of the peroneal longus muscle and along the fibula neck, and second, compression of the nerve during squatting with weights loaded and with strongly activated anterior tibial and peroneal muscles.