A Selective arthroplasty algorithm contributes to clinical outcome and patient satisfaction in patients with osteoarthritis of the knee

Aims and Objectives: The purpose was to evaluate the clinical outcomes and patient satisfaction of patients with knee osteoarthritis treated within a selective arthroplasty algorithm, using focal metal implants (FMI), unicompartmental (UKA), patellofemoral (PFA), bicompartimental (BKA) and total knee arthroplasty (TKA) in a single center. Materials and Methods: This is a prospective study analyzing a consecutive series of 613 patients treated by two surgeons in a single center. In 283 men and 330 women either partial or total knee replacement were performed. Their mean age at surgery was 63±6,85 years and mean BMI 29,55±5,00 kg/m2. 357 UKA, 178 TKA, 30 PFA, 23 BKA and 25 FMI were performed. Implants were cemented or cementless (UKA) and made of cobalt chrome in partial knee and zirconium oxide in total knee replacement. Demographics and patient reported outcomes (VAS, KOOS, Oxford Knee Score (OKS) and Knee Society Score (KSS Expectations and satisfaction)) were collected preoperatively and 3,6 and 12 months postoperatively. A total of 442 of 457 eligible patients (Compliance = 96,7%) have thus far completed the 12 months follow-up time point. Results: All mean KOOS, OKS, KSS and VAS scores improved significantly 1 year after surgery (p