title: Defining the femoral axis on lateral knee fluoroscopy.
abstract: The methodological detail about determining the femoral axis on lateral fluoroscopic images of the knee is lacking. This paper reports on the use of the posterior border of the lower femoral diaphysis to represent the axis. This method is accurate, simple, reliable and can be used by researchers studying knee joint kinematics using dynamic video fluoroscopy. It is also useful in the outpatient clinic to assess the flexion/extension position of femoral components after knee arthroplasty.
authors.affiliation: Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, OX3 7LD, Oxford, UK.
authors.forename: J L
authors.initials: JL
authors.lastname: Rees
authors.forename: A J
authors.initials: AJ
authors.lastname: Price
authors.forename: D J
authors.initials: DJ
authors.lastname: Beard
authors.forename: B J
authors.initials: BJ
authors.lastname: Robinson
authors.forename: D W
authors.initials: DW
authors.lastname: Murray
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D018483:Diaphyses / Q000000981:diagnostic imaging / Q000601:surgery; D005269:Femur / Q000000981:diagnostic imaging* / Q000601:surgery*; D005471:Fluoroscopy / Q000379:methods; D006801:Humans; D007718:Knee Injuries / Q000000981:diagnostic imaging* / Q000601:surgery*; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000601:surgery*; D015203:Reproducibility of Results