<prompt> Insal-Salvati index is used for -OlecranonPatellaTalusScaphoid  <response>: Ans. is b i.e., Patella o Two radiological indices are commonly used for determining the position of patella -Insall-Salvati indexIt is the ratio of patellar tendon length to patella length.Normally it is TO.An index of T 2 or more is seen in patella alta high riding patella.An index of 08 or less is seen in patella baja low lying patella.Blackbume-Peel lindexIt is the ratio of i the distance of tibial plateau to inferior articular surface of patella numerator, to ii length of articular surface of patella denominator.Normally it is 0-8.An index of 1 or more is seen in patella alta. 