The EKA Femoral Rotation Focus Group has not identified a single best reference method to determine femoral component rotation , but surgeons mostly prefer the measured resection technique using at least two l and marks for cross-checking the rotation .
Malrotation of the femoral component after primary total knee arthroplasty ( TKA ) is one of the most important problems leading to painful TKA requiring revision surgery .
A comprehensive systematic review of the literature was performed to present current evidence on how to optimally place the femoral component in TKA .
Intraoperative Comparison of Measured Resection and Gap Balancing Using a Force Sensor: A Prospective, Randomized Controlled Trial.
BACKGROUND For establishing femoral component position , gap-balancing ( GB ) and measured resection ( MR ) techniques were compared using a force sensor . METHODS Ninety-one patients were r and omized to undergo primary total knee arthroplasty using either MR ( n = 43 ) or GB ( n = 48 ) technique using a single total knee arthroplasty design .  GB was performed with an instrumented tensioner . Force sensor data were obtained before the final implantation . RESULTS GB result ed in greater range of femoral component rotation vs MR ( 1.5 ° ± 2.9 ° vs 3.1 ° ± 0.5 ° , P < .05 ) and posterior condylar cut thickness medially ( 10.2 ± 2.0 mm vs 9.0 ± 1.3 mm ) and laterally ( 8.5 ± 1.9 mm vs 6.4 ± 1.0 mm ) . Force sensor data showed a decreased intercompartmental force difference at full flexion in GB ( .8 ± 2.3 vs 2.0 ± 3.3u , 1u ≈ 15 N , P < .05 ) . CONCLUSION GB result ed in a greater range of femoral component rotation and thicker posterior condylar cuts result ing in an increased flexion space relative to MR . Intercompartmental force difference trended toward a more uniform distribution between full extension and full flexion in the GB vs MR group
The EKA Femoral Rotation Focus Group has not identified a single best reference method to determine femoral component rotation , but surgeons mostly prefer the measured resection technique using at least two l and marks for cross-checking the rotation .
Malrotation of the femoral component after primary total knee arthroplasty ( TKA ) is one of the most important problems leading to painful TKA requiring revision surgery .
A comprehensive systematic review of the literature was performed to present current evidence on how to optimally place the femoral component in TKA .