title: The gender solutions Natural-Knee flex system and future directions.
abstract: The morphology of the distal femur varies. Whether or not the variability falls strictly along gender lines, a better fit to the distal femur can be obtained without intraoperative compromises by making available both a narrow and a wider medial-lateral/anterior-posterior aspect ratio. In our 1-year outcomes of the first 360 patients who received the Zimmer Gender Solutions Natural-Knee Flex System, mean flexion was 131 degrees (10 degrees better than mean flexion with the earlier Natural-Knee I and II systems), and the lateral release rate decreased to 2%. We no longer need to downsize during surgery to achieve good fit in femurs-in female patients typically-with narrower medial-lateral/anterior-posterior aspect ratios.
authors.affiliation: Eastern Oklahoma Orthopedic Center, Tulsa, OK 74136, USA. Joints4yu@aol.com
authors.forename: Rodney L
authors.initials: RL
authors.lastname: Plaster
authors.forename: Kara B
authors.initials: KB
authors.lastname: Starkman
authors.forename: Julie
authors.initials: J
authors.lastname: McGee
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D001843:Bone Cements; D002484:Cementation; D005260:Female; D005269:Femur / Q000033:anatomy & histology; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D020959:Polyethylene; D011446:Prospective Studies; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012737:Sex Factors; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D020959:Polyethylene