Medium- to Long-Term Results of the Nexgen Legacy Posterior Stabilized Fixed-Bearing Knee Replacement

Oommen Mathew Arikupurathu; Linda Johnston; Alasdair MacInnes; Graeme Nicol; Manhal Nassif

doi:10.1055/s-0038-1660477

The Journal of Knee Surgery, Inhaltsverzeichnis

J Knee Surg 2019; 32(06): 554-559
DOI: 10.1055/s-0038-1660477

Original Article

Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Medium- to Long-Term Results of the Nexgen Legacy Posterior Stabilized Fixed-Bearing Knee Replacement

Autoren

Oommen Mathew Arikupurathu

¹University Department of Orthopaedic and Trauma Surgery, Tayside Orthopaedic and Rehabilitation Centre (TORT), Ninewells Hospital and Medical School, University of Dundee, Dundee, United Kingdom
Linda Johnston

¹University Department of Orthopaedic and Trauma Surgery, Tayside Orthopaedic and Rehabilitation Centre (TORT), Ninewells Hospital and Medical School, University of Dundee, Dundee, United Kingdom
Alasdair MacInnes

²Directorate of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, Dundee, United Kingdom
Graeme Nicol

²Directorate of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, Dundee, United Kingdom
Manhal Nassif

³Directorate of Orthopaedic and Trauma Surgery, Perth Royal Infirmary, Taymount Terrace, Perth, United Kingdom

Abstract

The NexGen legacy posterior stabilized (LPS) prosthesis was introduced in 1997 after many design changes to its predecessor, the Insall–Burstein II prosthesis. However, there have been no reported long-term studies on the performance of this implant. Prospectively, collected data from a local database comprising primary total knee replacements (TKRs) with LPS between 1997 and 2002 was analyzed. All implants were fixed with cement. Patients were followed up at 1, 3, 5, 7, and 10 years, with patient satisfaction, range of movement, and Knee Society score (KSS) assessed. A total of 621 primary TKRs were analyzed with an average follow-up of 11.25 years (9.15–14.55). The mean age was 69.53 years. The mean KSS was 88.97 and mean flexion increased from 88.3 to 103.5 degrees at 10 years. Kaplan–Meier's analysis revealed a survivorship of 96.5% with revision for any reason as the end point and 98.9% if aseptic loosening was the reason for revision at 14 years. This study revealed excellent mid- to long-term results with the NexGen LPS prosthesis.

Keywords

NexGen LPS - knee - score - Kaplan–Meier - survivorship

Volltext

Referenzen

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