title: The cruciate ligaments in total knee arthroplasty: a kinematic analysis of 2 total knee arthroplasties.
abstract: In vivo weight-bearing fluoroscopic kinematic analysis using an interactive model fitting technique with 3-dimensional computer-aided design solid models was done using 16 anterior and posterior (bicruciate)-sparing and 6 posterior cruciate-sparing total knee arthroplasties (TKAs). All patients had a satisfactory clinical result with a minimum of 12 months' follow-up. The femorotibial contact position of TKAs started posterior to the midline in extension. Bicruciate TKAs revealed gradual posterior femoral rollback and limited anterior-posterior translation but remained posterior to the sagittal plane midline in all positions. Posterior cruciate-sparing TKAs began significantly posterior in extension, demonstrated progressive anterior translation with flexion, and had exaggerated medial condyle translation on deep knee bend. The posterior cruciate-retaining TKAs of this study had the most abnormal kinematic performance.
authors.affiliation: Midwest Orthopaedic Biomechanical Laboratory, St. Luke's Hospital, Milwaukee, Wisconsin, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Stiehl
authors.forename: R D
authors.initials: RD
authors.lastname: Komistek
authors.forename: J M
authors.initials: JM
authors.lastname: Cloutier
authors.forename: D A
authors.initials: DA
authors.lastname: Dennis
mesh_terms: D016118:Anterior Cruciate Ligament / Q000601:surgery*; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D001696:Biomechanical Phenomena; D005471:Fluoroscopy; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007719:Knee Joint / Q000502:physiology* / Q000601:surgery; D007720:Knee Prosthesis; D009068:Movement; D016119:Posterior Cruciate Ligament; D011474:Prosthesis Design; D016474:Weight-Bearing