The investigators asked: (1) Do computer-assisted total knee arthroplasty (TKAs) provide better alignment and clinical function? (2) Do computer-assisted TKAs provide better survivorship of implants and less complication? and (3) Do correction of the mechanical axis of the lower limb to within 3° of neutral is a prognostic marker for late revision surgery due to aseptic loosening?
Computer-assisted total knee arthroplasty (TKA) is reported to improve the overall accuracy of positioning of the femoral and tibia components. However, an acceptable target for alignment remains a matter for debate. A mechanical axis within 3° of neutral axis has been used as the primary outcome measure in many clinical trials comparing computer-assisted- and conventional TKA. However, the evidence supporting this arbitrary value is unreliable because previous reports are limited by their small sample size, inadequate radiographs, short follow-up and lack of clarity when defining a margin of accuracy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
520
Non-Computer Assistance Total Knee Arthroplasty
Computer Assistance Total Knee Arthroplasty
Ewha Womans University Mokdong Hosptial
Seoul, South Korea
Improvement in Knee Society Knee Score
change in knee score will be compared with initial score, until follow up of 10.5 years
Time frame: 10.5 years
Improvement in the range of motion
change in the range of motion of knee joint will be compared with the initial value, until follow up of 10.5 years.
Time frame: 10.5 years
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