Alignment changes due to incomplete component seating in total knee arthroplasty.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 22480526.
- Also identified by DOI 10.1016/j.arth.2012.02.003.
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Abstract
Mechanical axis restoration remains a primary goal of total knee arthroplasty. Incomplete asymmetrical component seating, through intended or unintended alterations in surgical technique, changes the component alignment and, thus, the overall mechanical axis. Using a trigonometric analysis, it was determined that incomplete seating of 1 to 5 mm can alter the coronal alignment by 0.7° to 4.9°, depending on the amount of asymmetry as well as the size of the femoral or tibial component. This analysis quantifies the degree of changes surgeons should expect when incomplete component seating is encountered intraoperatively.
Medical subject headings
- Arthroplasty, Replacement, Knee
- Bone Malalignment
- Knee Prosthesis
- Mathematical Computing
Anatomy
- knee
- femur
- tibia