title: Extensor mechanism function in single-radius vs multiradius femoral components for total knee arthroplasty.
abstract: The early outcomes of 2 newer-generation posterior cruciate ligament-retaining fixed-bearing total knee arthroplasty (TKA) implant designs were assessed to determine if a single sagittal radius femoral design has an advantage in obtaining earlier knee range of motion and function when compared with a contemporary multiradius femoral design. Total knee arthroplasty patients were prospectively randomized to receive either a single sagittal radius femoral design (n=50) or a multiradius femoral design (n=50). Knee extensor mechanism function after TKA with either a single sagittal radius or multiradius implant was comparable in contemporary posterior cruciate ligament-retaining TKA designs.
authors.affiliation: The Center Orthopaedic and Neurosurgical Care and Research, Bend, Oregon, USA.
authors.forename: James
authors.initials: J
authors.lastname: Hall
authors.forename: Steven N
authors.initials: SN
authors.lastname: Copp
authors.forename: Wendy S
authors.initials: WS
authors.lastname: Adelson
authors.forename: Darryl D
authors.initials: DD
authors.lastname: D'Lima
authors.forename: Clifford W
authors.initials: CW
authors.lastname: Colwell
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D006801:Humans; D007720:Knee Prosthesis; D016119:Posterior Cruciate Ligament; D011446:Prospective Studies; D011474:Prosthesis Design; D016059:Range of Motion, Articular