J Korean Orthop Assoc.  2006 Jun;41(3):461-466.

Analysis of the Relationship between Posterior Cruciate Ligament Preservation and Femoral Component Sizein Total Knee Arthroplasty

• Seo JG
• Moon YW
• Hwang CH
• Kang HJ

Abstract

PURPOSE: How PCL preservation affects the selection of femoral component size in total knee arthroplasty.
MATERIALS AND METHODS
One hundred and fifty-seven patients, two-hundred and twenty-two knees, underwent total knee arthroplasties with Scorpio(R). One hundred and eighteen knees underwent PCL-preserving procedures, and one-hundred and four knees underwent PCL-substituting procedures. For minimization of error, we performed soft tissue balancing and then bone cutting by a Linker system with certain posterior slope (< or = 3 degrees). We compared the sizes of the femoral components between the PCL-preserving and PCL-substituting procedures in order to determine how flexion gap differences affect femoral component sizes (Wilcoxon signed rank test).
RESULTS
With a certain minimal posterior slope (< or = 3 degrees), the PCL-preservation procedure led to selection of a 2.4 mm smaller femoral component than the PCL substituting procedure (p<0.05).
CONCLUSION
Selection of femoral component size was affected by PCL preservation, and the size of the femoral component was decreased in the PCL preservation group.

Keyword

Knee; Posterior cruciate ligament; Total knee arthroplasty; Femoral component size

MeSH Terms

Arthroplasty*
Humans
Knee*
Posterior Cruciate Ligament*