Significance of asymmetrical posteromedial and posterolateral femoral condylar chamfer cuts in total knee arthroplasty

Abstract

II.

Posterior reference guides do not always maintain the size of posterior femoral condyles in TKA

“…The more the femoral component was externally rotated, the more the difference in size changes of the medial and lateral posterior femoral condyles increased between prostheses (Figs. 5,6,7).…”

“…The posterior reference guide design affects posterior femoral condyle bone resection thickness, which may change the posterior condylar offset [1,7,23] and the size of flexion joint gap [3,5,13]. However, the relationship Abstract Purpose Posterior reference guides are provided by many manufacturers.…”

Comment on: Measurement of the knee joint line in Turkish population

“…Therefore, to our knowledge, all the studies in the literature cover only one leg for this type of morphometric studies; otherwise, bilateral measurements should be evaluated in separate groups. 2 , 3 , 4 , 5 To ensure images representative of normal anatomy, patients with preexisting radiologic evidence of arthritis in their knees should be excluded from the study. 2 , 3 , 4 , 5 However, the exclusion criteria of the authors did not cover knee osteoarthritis that definitely may alter joint level measurements due to erosions of the subchondral bone as seen in Fig.…”

“… 2 , 3 , 4 , 5 To ensure images representative of normal anatomy, patients with preexisting radiologic evidence of arthritis in their knees should be excluded from the study. 2 , 3 , 4 , 5 However, the exclusion criteria of the authors did not cover knee osteoarthritis that definitely may alter joint level measurements due to erosions of the subchondral bone as seen in Fig. 1 in the original article (knee with Kellgren–Lawrence Grade 3 osteoarthritis and possible valgus deformity).…”

“…Therefore, to our knowledge, all the studies in the literature cover only one leg for this type of morphometric studies; otherwise, bilateral measurements should be evaluated in separate groups. 2 , 3 , 4 , 5 …”