Measurement of Insall Salvati ratio and modified Insall Salvati ratio to assess the position of the patella in South Indian population

Background: This is an observational study that was carried out to find the mean Insall Salvati ratio and modified Insall Salvati ratio in people coming to outpatient department requiring radiograph of knee joint..Methods: Radiological assessment of 200 knees which included 100 men and 100 women above the age group of 18,in a period of 6 months for which Insall Salvati and modified Insall Salvati ratio were calculated.Results: The mean Insall Salvati ratio was calculated to be 0.805 and the mean modified Insall Salvati ratio was 0.605 in South Indian.Conclusions: Based on the above study i conclude that majority of South Indian population had patella baja with female predominance