Skip to main content
Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: A new method for evaluation of patellar height and the position of the joint line before and after total knee arthroplasty

Fig. 1

Representation of the four classical methods used for measuring patellar height. As represented in A and B (preoperative and postoperative radiographs, respectively), the Insall-Salvati index is calculated by “a1/b1”, and the modified Insall-Salvati index is calculated by “a2/b2”. As represented in C and D (preoperative and postoperative radiographs, respectively), the Caton-Deschamps index is defined as “a1/b”, and the Blackburne-Peel index is defined as “a2/b”

Back to article page