Mechanism: Compression of the dorsal branch of the pudendal nerve between the saddle and the symphysis pubis
Signs and symptoms:
(1) numbness in the perineum and penis
(2) erectile dysfunction
(3) impotence
Bicycle riders at risk:
(1) long distance bicycle rider
(2) bicycle racer
(3) policeman or security guard who patrols by bicycle
(4) urban bicycle messenger
Risk factors for nerve injury:
(1) bicycle riding for a prolonged period
(2) hard, unpadded bicycle seat
(3) unpadded bicycle shorts
(4) long protruding saddle nose
(5) high load on the bicycle seat (from body weight and/or equipment being carried)
