This 1972 paper by Insall, Goldberg, and Salvati introduces the LP:LT ratio method for measuring patellar height on lateral radiographs and applies it to 77 operatively treated cases of recurrent patellar dislocation compared to 114 normal knees, asking whether patella alta is a consistent finding in instability and whether the ratio can guide the extent of surgical correction.
This 1972 paper by Insall, Goldberg, and Salvati introduces the LP:LT ratio method for measuring patellar height on lateral radiographs and applies it to 77 operatively treated cases of recurrent patellar dislocation compared to 114 normal knees, asking whether patella alta is a consistent finding in instability and whether the ratio can guide the extent of surgical correction.