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J Knee Surg 2013; 26(04): 219-224
DOI: 10.1055/s-0032-1329233
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Outcomes of Total Knee Replacement after Patellofemoral Arthroplasty

Jonathan Hutt
1   Department of Trauma and Orthopaedics, Croydon University NHS Trust, Surrey, United Kingdom
,
Matthew Dodd
1   Department of Trauma and Orthopaedics, Croydon University NHS Trust, Surrey, United Kingdom
,
Henry Bourke
2   Department of Trauma and Orthopaedics, Frimley Park NHS Trust, Surrey, United Kingdom
,
Jonathan Bell
3   Department of Orthopaedics, Wimbledon Clinics, London, United Kingdom
› Author Affiliations
Further Information

Publication History

13 July 2012

23 August 2012

Publication Date:
30 November 2012 (online)

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Abstract

There is increasing interest in the use of patellofemoral joint replacements and the cohort receiving them are the youngest of any of the groups of patients undergoing a knee arthroplasty. With more contemporary prostheses, progression of arthritis in other parts of the knee joint is becoming the predominant mechanism of failure. We conducted a multicenter retrospective comparative cohort study to discover whether the outcome of total knee replacement is compromised by prior patellofemoral joint arthroplasty. A total of 21 patients with a mean age of 61 years, who were revised from a patellofemoral joint replacement to a total knee replacement, were compared with a matched cohort of patients who underwent primary total knee replacement. At a mean follow-up of 2.4 years, the primary total knee replacement cohort had significantly better Oxford Knee Scores, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) function scores, pain visual analog scores, and EQ–5D scores. There was no significant difference in patient satisfaction or EQ–5D visual analog scale.

Our results indicate that although the revision of a patellofemoral joint replacement to a total knee replacement is a technically straightforward procedure, the eventual outcome may be less satisfactory when compared with a primary total knee replacement.

Keywords

patellofemoral - arthroplasty - revision - outcomes
 

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