Assessing the Position of Patella by Measuring Insall Salvati and Modified Insall Salvati Ratio among the South Indian Population

The aim of this chapter is to assess the position of the patella by measuring the insall salvati and modified insall salvati ratio among the south indian population. The Insall-Salvati ratio for the assessment of patellar height was the first widely used index to be relatively independent of knee flexion. Despite the subsequent publication of other indices, it remains the most widely used index. This study included 200 people seen on a OP basis in Sri Ramachandra medical college and research institute between January 2016 to June 2016, chosen randomly, splitting up the study population by 100 males and 100 females to avoid gender based bias with no previous history of trauma, surgeries or any pathologies in and around the knee joint.

The mean Insall Salvati ratio for 100 males were found to be 1.41 and for 100 females were found to be 1.28. The mean modified Insall Salvati ratio for 100 males were 1.81 and for 100 females were 1.75. The use of the Insall Salvati ratio to determine the patellar position is less applicable to Indian populations in which squatting, sitting cross-legged, and kneeling are customs.

Based on the above study it is conclude that majority of South Indian population had patella baja with female predominance.