title: Comparison of robotic-assisted and conventional manual implantation of a primary total knee arthroplasty.
abstract: This study was aimed to compare robotic-assisted implantation of a total knee arthroplasty with conventional manual implantation. We controlled, randomized, and reviewed 72 patients for total knee arthroplasty assigned to undergo either conventional manual implantation (excluding navigation-assisted implantation cases) of a Zimmer LPS prosthesis (Zimmer, Warsaw, Ind) (30 patients: group 1) or robotic-assisted implantation of such a prosthesis (32 patients: group 2). The femoral flexion angle (gamma angle) and tibial angle (delta angle) in the lateral x-ray of group 1 were 4.19 +/- 3.28 degrees and 89.7 +/- 1.7 degrees, and those of group 2 were 0.17 +/- 0.65 degrees and 85.5 +/- 0.92 degrees. The major complications were from improper small skin incision during a constraint attempt of minimally invasive surgery and during bulk fixation frame pins insertion. Robotic-assisted technology had definite advantages in terms of preoperative planning, accuracy of the intraoperative procedure, and postoperative follow-up, especially in the femoral flexion angle (gamma angle) and tibial flexion angle (delta angle) in the lateral x-ray, and in the femoral flexion angle (alpha angle) in the anteroposterior x-ray. But a disadvantage was the high complication rate in early stage.
authors.affiliation: Department of Orthopaedic Surgery, Dongguk University International Hospital, Ilsan, South Korea.
authors.forename: Sang Eun
authors.initials: SE
authors.lastname: Park
authors.forename: Chun Taek
authors.initials: CT
authors.lastname: Lee
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods*; D001696:Biomechanical Phenomena; D005269:Femur / Q000000981:diagnostic imaging / Q000502:physiology / Q000601:surgery*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000502:physiology / Q000601:surgery*; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D017755:Prosthesis Fitting; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012371:Robotics / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*