title: The radiological parameters correlated with the alignment of the femoral component after Oxford phase 3 unicompartmental knee replacement.
abstract: The purpose of this study was to measure the   radiological parameters of femoral component alignment of the Oxford   Phase 3 unicompartmental knee replacement (UKR), and evaluate their   effect on clinical outcome. Multiple regression analysis was used   to examine the relative contributions of the radiological assessment   of femoral component alignment in 189 consecutive UKRs performed   by a single surgeon. The American Knee Society scores were compared   between groups, defined as being within or outside recommended tolerances   of the position of the femoral component. For the flexion/extension   position 21 UKRs (11.1%) lay outside the recommended limits, and for   posterior overhang of the femoral component nine (4.8%) lay outside   the range. The pre-operative hip/knee/ankle (HKA) angle, narrowest   canal distance from the distal femoral entry point of the alignment   jig and coronal entry-point position had significant effects on   the flexion/extension position. Pre-operative HKA angle had a significant   influence on posterior overhang of the femoral component. However,   there was no significant difference in American Knee Society scores   relative to the position of the femoral component.
authors.affiliation: Korea University College of Medicine, Department of Orthopaedic Surgery, Guro Hospital, 97 Gurodong-gil, Guro-gu, Seoul 152-703, Korea.
authors.forename: J G
authors.initials: JG
authors.lastname: Kim
authors.forename: N S
authors.initials: NS
authors.lastname: Kasat
authors.forename: J H
authors.initials: JH
authors.lastname: Bae
authors.forename: S J
authors.initials: SJ
authors.lastname: Kim
authors.forename: S M
authors.initials: SM
authors.lastname: Oh
authors.forename: H C
authors.initials: HC
authors.lastname: Lim
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging* / Q000601:surgery; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016059:Range of Motion, Articular; D012044:Regression Analysis; D012189:Retrospective Studies; D016896:Treatment Outcome