Background: Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. Methods: A consecutive group of 100 patients undergoing TKA using a classic cemented fixed-bearing PS TKA system was matched by age, gender, body max index to 100 patients having the newer cemented fixed-bearing PS design, both by the same manufacturer. Patients were assessed preoperatively, at 12 months and at 24 months minimum follow-up (range, 24-46) in a standard prospective fashion. The outcome assessments used were the Oxford Knee Score, the Knee Society Score, range of motion, and a satisfaction survey. A 2-sample t test comparing the 2 groups was performed. Results: No patients were lost at follow-up. At 2-year follow-up, differences in clinical and radiological Knee Society Score (P ¼ .09), Oxford Score (P ¼ .08), and overall satisfaction rate did not reach statistical significance. Implant group 2 showed a statistically significant decrease in postoperative anterior knee pain (P ¼ .006). At final follow-up, 16% of group 1 knees achieved > 130 flexion compared with 37% in group 2 (P ¼ .0009). There were 2 revisions for any reason in group 1 and none in group 2. Conclusions: Design modifications applied to the newer TKA system allowed greater flexion and lower patellofemoral complications but did not appear to achieve better overall clinical scores.

Posterior-stabilized (PS) total knee arthroplasty: a matched pair analysis of a classic and its evolutional design / INDELLI, PIER FRANCESCO; PIPINO, GENNARO; JOHNSON, PAUL; GRACEFFA, ANGELO; MARCUCCI, MASSIMILIANO. - In: ARTHROPLASTY TODAY. - ISSN 2352-3441. - STAMPA. - (2016), pp. 193-198.

Posterior-stabilized (PS) total knee arthroplasty: a matched pair analysis of a classic and its evolutional design

MARCUCCI, MASSIMILIANO
2016

Abstract

Background: Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. Methods: A consecutive group of 100 patients undergoing TKA using a classic cemented fixed-bearing PS TKA system was matched by age, gender, body max index to 100 patients having the newer cemented fixed-bearing PS design, both by the same manufacturer. Patients were assessed preoperatively, at 12 months and at 24 months minimum follow-up (range, 24-46) in a standard prospective fashion. The outcome assessments used were the Oxford Knee Score, the Knee Society Score, range of motion, and a satisfaction survey. A 2-sample t test comparing the 2 groups was performed. Results: No patients were lost at follow-up. At 2-year follow-up, differences in clinical and radiological Knee Society Score (P ¼ .09), Oxford Score (P ¼ .08), and overall satisfaction rate did not reach statistical significance. Implant group 2 showed a statistically significant decrease in postoperative anterior knee pain (P ¼ .006). At final follow-up, 16% of group 1 knees achieved > 130 flexion compared with 37% in group 2 (P ¼ .0009). There were 2 revisions for any reason in group 1 and none in group 2. Conclusions: Design modifications applied to the newer TKA system allowed greater flexion and lower patellofemoral complications but did not appear to achieve better overall clinical scores.
2016
193
198
INDELLI, PIER FRANCESCO; PIPINO, GENNARO; JOHNSON, PAUL; GRACEFFA, ANGELO; MARCUCCI, MASSIMILIANO
File in questo prodotto:
File Dimensione Formato  
PIIS2352344116300115.pdf

accesso aperto

Tipologia: Pdf editoriale (Version of record)
Licenza: Open Access
Dimensione 1.09 MB
Formato Adobe PDF
1.09 MB Adobe PDF

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1078758
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact