Objectives-To study circumstances of bicycle accidents and nature of injuries sustained and to determine effect of safety helmets on pattern of miuries.Design-Prospective study of patients with cycle related injuries.Setting-Accident and emergency departnent of teaching hospital.Subjects-1040 patients with complete data presenting to the department in one year with cycle related injuries, ofwhom 114 had worn cycle helmets when accident occurred.Main outcome measures-Type of accident and nature and distribution of injuries among patients with and without safety helmets.Results-There were no significant differences between the two groups with respect to type of

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No prophylactic antibiotics were given. A total of 13 wounds developed infection: seven sutured and six unsutured wounds (not statistically significant), giving an overall infection rate of 7 7%. Significantly (P < 0-01), more wound infections occurred in the hand in both groups compared to the rest of the body, indicating that particular attention should be paid to management of such wounds.It was concluded that dog-bite wounds should receive thorough surgical treatment and can be safely sutured at presentation. Special care should be given to hand wounds.

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