title: Long-term results of compartmental arthroplasties of the knee: Long term results of partial knee arthroplasty.
abstract: Partial knee arthroplasty (PKA), either medial or lateral unicompartmental knee artroplasty (UKA) or patellofemoral arthroplasty (PFA) are a good option in suitable patients and have the advantages of reduced operative trauma, preservation of both cruciate ligaments and bone stock, and restoration of normal kinematics within the knee joint. However, questions remain concerning long-term survival. The goal of this review article was to present the long-term results of medial and lateral UKA, PFA and combined compartmental arthroplasty for multicompartmental disease. Medium- and long-term studies suggest reasonable outcomes at ten years with survival greater than 95% in UKA performed for medial osteoarthritis or osteonecrosis, and similarly for lateral UKA, particularly when fixed-bearing implants are used. Disappointing long-term outcomes have been observed with the first generation of patellofemoral implants, as well as early Bi-Uni (i.e., combined medial and lateral UKA) or Bicompartmental (combined UKA and PFA) implants due to design and fixation issues. Promising short- and med-term results with the newer generations of PFAs and bicompartmental arthroplasties will require long-term confirmation.
authors.affiliation: Aix-Marseille University, IML Hopital Sainte Marguerite, 13008, Marseille, France.
authors.forename: S
authors.initials: S
authors.lastname: Parratte
authors.affiliation: Aix-Marseille University, 270 Boulevard Sainte Marguerite, BP 29, 13274 Marseille, France.
authors.forename: M
authors.initials: M
authors.lastname: Ollivier
authors.affiliation: Aix-Marseille University, 270 Boulevard Sainte Marguerite, BP 29, 13274 Marseille, France.
authors.forename: A
authors.initials: A
authors.lastname: Lunebourg
authors.affiliation: Mayo Clinic, 200 First Street S.W., Rochester, MN 55905, USA.
authors.forename: M P
authors.initials: MP
authors.lastname: Abdel
authors.affiliation: Aix-Marseille University, 270 Boulevard Sainte Marguerite, BP 29, 13274 Marseille, France.
authors.forename: J-N
authors.initials: JN
authors.lastname: Argenson
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation / Q000379:methods*; D062785:Hemiarthroplasty / Q000295:instrumentation; D006801:Humans; D007720:Knee Prosthesis; D020370:Osteoarthritis, Knee / Q000601:surgery*; D011474:Prosthesis Design; D016896:Treatment Outcome
keywords: Partial knee replacements (PKR) ; Unicompartmental knee arthroplasty (UKA); Fixed-Bearing PKR; Mobile-Bearing PKR; Patellofemoral arthroplasty (PFA); Bicompartmental arthroplasty