title: Minimum two-year outcomes of modular bicompartmental knee arthroplasty.
abstract: The purpose of this study was to determine the results of modular unlinked bicompartmental knee arthroplasty (BiKA) for medial (or lateral) and patellofemoral arthritis. Twenty-nine modular BiKAs were followed prospectively, for a mean of 31 months (range, 24-46 months). Outcome measures included Knee Society Knee and Function Scores, KOOS, SF-12, and WOMAC, as well as radiographic assessments and implant survivorship. Two tail paired Student's t test was used to determine statistical differences between preoperative and postoperative scores. Mean range of motion (ROM) improved from 122° to 133° (P<0.001). There was a statistically significant improvement across all functional scores. One patient underwent conversion to total knee arthroplasty at 3 years for knee instability. There were no cases of patellar instability, implant loosening or wear, or progressive arthritis.
authors.affiliation: Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Atul F
authors.initials: AF
authors.lastname: Kamath
authors.forename: Ashley
authors.initials: A
authors.lastname: Levack
authors.forename: Thomas
authors.initials: T
authors.lastname: John
authors.forename: Beverly S
authors.initials: BS
authors.lastname: Thomas
authors.forename: Jess H
authors.initials: JH
authors.lastname: Lonner
mesh_terms: D000328:Adult; D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D020127:Recovery of Function; D016896:Treatment Outcome
keywords: arthroplasty; bicompartmental; knee; patellofemoral; unicompartmental