“…Previous studies have looked at the incidence and severity of paediatric blunt renal injury by age group. There is disagreement on whether renal injury following blunt injury is more likely in the 5 to 10 year age group (Reid, 1973;Ahmed and Morris, 1982), the over 10 age group (Persky and Forsythe, 1962;Kuzmarov et al, 1981 ;Cass, 1983) or neither (Emanuel et af., 1977). In only 1 study was an association found between severity of renal injury and age (over 10) (Linke et al, 1972).…”