Allen R H, Eiseman B, Straehley C J, Orloff B G
JAMA. 1977 Feb 14;237(7):668-70.
A 56-month survey of 36 hospitalized patients injured while surfing off Oahu, Hawaii, indicated that 34% of the injuries involved the head and spine. Bodysurfing involves a considerable risk of craniospinal injury if the head is driven into the sand. The most frequent injury in surfboarding is being hit by a loose board. Risk of injury in surfboarding is approximately one per 17,500 surfing days--an incidence far below most sports.