Early and mid-term results with the ATTUNE total knee replacement system compared to PFC Sigma: a prospective comparative study

• Published in: Journal of orthopaedic surgery and research Vol. 17; no. 1; pp. 509 - 5
• Main Authors: Willburger, Roland E, Oberberg, Stella
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 24.11.2022; BioMed Central; BMC
• Subjects: Arthroplasty (knee); Arthroplasty, Replacement, Knee - methods; ATTUNE; Cement; Comparative analysis; Conformity; Hospitals; Humans; Implants, Artificial; Joint surgery; Knee; Knee Joint - surgery; Knee Prosthesis; Ligaments; Orthopedics; Outcome; Pain; Parkinson's disease; Patient satisfaction; Patients; PFC Sigma; Polyethylene; PROMs; Prospective Studies; Prostheses; Prosthesis; Radiolucent lines; Range of Motion, Articular; Statistical analysis; Surgeons; Surgery; Surgical outcomes; Total knee arthroplasty; Transplants & implants; Radiolucent lines; ATTUNE; Total knee arthroplasty; Outcome; PFC Sigma; PROMs
• ISSN: 1749-799X; 1749-799X
• DOI: 10.1186/s13018-022-03397-7

Up to 20% of all patients are not satisfied with the result after total knee arthroplasty (TKA). To improve patient satisfaction manufacturers have modified prosthesis design. The ATTUNE prosthesis is a modified version of the PFC Sigma. Aim of this study was to evaluate the outcome at 6 months and 5 years after TKA with ATTUNE compared to PFC Sigma. Sixty patients were included prospectively (30 ATTUNE vs. 30 PFC Sigma). Knee Society Score and Hospital for Special Surgery Score were recorded preoperatively, at 6 months and at least 5 years postoperatively. At 5-years follow-up X-rays in two planes were evaluated, radiolucent lines were documented. Patient characteristics were similar in both groups. Both ATTUNE and PFC Sigma provided good to excellent clinical results. There were no statistically significant differences based on the overall scores and patient rated outcome measures. Nevertheless, patients in the ATTUNE group tended to be symptom-free earlier and to achieve better clinical results after 5 years. Even with the scores not being significantly different here, the modified design of ATTUNE could increase long-term satisfaction with the implant and reduce the need for revision surgery. However, long-term results are required to prove this.