J Arthroplasty 2007 Feb;22(2):235-40
Department of Orthopedic Surgery, University of Zurich, Balgrist, Switzerland.
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BMC Musculoskelet Disord 2012 Oct 23;13:206. Epub 2012 Oct 23.
Department of Bioengineering, Clemson University, 301 Rhodes Engineering Research Center, Clemson, SC 29634-0905, USA.
Background: Clinical consequences of alignment errors in total knee replacement (TKR) have led to the rigorous evaluation of surgical alignment techniques. Rotational alignment in the transverse plane has proven particularly problematic, with errors due to component malalignment relative to bone anatomic landmarks and an overall mismatch between the femoral and tibial components' relative positions. Ranges of nominal rotational alignment are not well defined, especially for the tibial component and for relative rotational mismatch, and some studies advocate the use of mobile-bearing TKR to accommodate the resulting small rotation errors. Read More
J Arthroplasty 2010 Apr 5;25(3):486-91. Epub 2009 Feb 5.
Faculty of Medicine, Department of Orthopedic Surgery, Kyoto University, Kyoto, Japan.
We examined the relative motion of femoral and tibial total knee arthroplasty components and the difference between 2 different tibial inserts (9 flat types and 7 dish types) in patients sitting in very deep flexion. X-ray, fluoroscopic examination, and computed tomography were used to analyze liftoff, and rotation. During seiza-style sitting, one knee (11%) with the flat insert lifted off on the medial side and 5 knees (71%) with the dish-type insert showed liftoff. Read More
J Arthroplasty 2012 Jun 7;27(6):1094-9. Epub 2011 Dec 7.
Department of Orthopaedic Surgery, Chiba Rehabilitation Center, 1-45-2 Hondacho, Midori-ku, Chiba, Japan.
The purpose of this study was to determine how much sagittal rotation of the femoral component affects the flexion gap and femoral component sizing using a computer-simulation technique. The study comprised 25 knees scheduled for total knee arthroplasty (TKA). The femoral component was positioned at -2°, 0°, 2°, 4°, or 6° of flexion to the anterior femoral cortex, and the resected portion of the posterior medial femoral condyle was measured for 3 total knee systems. Read More
Knee 2015 Dec 23;22(6):527-34. Epub 2015 May 23.
Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, FL, USA. Electronic address:
Background: Adjusting joint gaps and establishing mediolateral (ML) soft tissue balance are considered essential interventions for better outcomes in total knee arthroplasty (TKA). However, the relationship between intraoperative laxity measurements and weightbearing knee kinematics has not been well explored. This study aimed to quantify the effect of intraoperative joint gaps and ML soft tissue balance on postoperative knee kinematics in posterior-stabilized (PS)-TKA. Read More