Abstract
This study compares the relative risk of revision and associated risk factors after
total or unicompartmental knee arthroplasty (TKA or UKA) in the Medicare population.
A total of 61 767 TKA and 2848 UKA patients were identified. Reviewed data included
type of treatment, gender, age, race, Charlson Index for comorbidity, length of stay,
Medicare buy-in for socioeconomic status, region, and year. Unicompartmental knee
arthroplasty patients were at increased risk for revision at 2 and 5 years. Those
patients undergoing UKA were significantly more likely to require revision in the
first 5 years as compared with those undergoing TKA. Risk factors contributing to
TKA revision included younger male patients with higher comorbidities and lower socioeconomic
status. About UKA, lower revision rates tend to favor those surgeons with higher volume.
Keywords
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References
- A 5- to 7-year follow-up of unicondylar arthroplasty.J Bone Joint Surg Am. 1980; 62: 1329
- Unicompartmental tibiofemoral resurfacing arthroplasty.J Bone Joint Surg Am. 1978; 60: 182
- Unicompartmental versus total knee arthroplasty in the same patient: a comparative study.Clin Orthop Relat Res. 1991; 273: 151
- Cost-effectiveness of unicompartmental and total knee arthroplasty in elderly low-demand patients. A Markov decision analysis.J Bone Joint Surg Am. 2006; 88: 2348
- Cost-effectiveness analysis of unicompartmental knee arthroplasty as an alternative to total knee arthroplasty for unicompartmental osteoarthritis.J Bone Joint Surg Am. 2006; 88: 1975
- Unicompartmental or total knee arthroplasty?: results from a matched study.Clin Orthop Relat Res. 2006; 451: 101
- Early failures in unicondylar arthroplasty.Orthopaedics. 2010; 33: 11
- Unicompartmental knee arthroplasty: long-term results.Clin Orthop Relat Res. 2001; 392: 272
- Unicompartmental or total knee replacement: the 15-year results of a prospective randomized controlled trial.J Bone Joint Surg Br. 2009; 91: 52
- Comparison of a mobile with a fixed-bearing unicompartmental knee implant.Clin Orthop Relat Res. 2002; 404: 62
- Oxford meniscal bearing knee versus the Marmor knee in unicompartmental arthroplasty for arthrosis. A Swedish multicenter survival study.J Arthroplasty. 1995; 10: 722
- Comparison of a mobile with a fixed bearing unicompartmental knee prosthesis: a prospective randomized trial using a dedicated outcome score.Knee. 2004; 11: 357
- Revision of failed unicondylar unicompartmental knee arthroplasty.J Bone Joint Surg Am. 1987; 69: 1328
- Revision of Oxford medial unicompartmental knee arthroplasty to total knee arthroplasty—results of a multicentre study.The Knee. 2007; 14: 275
- Future clinical and economic impact of revision total hip and knee arthroplasty.J Bone Joint Surg Am. 2007; 89: 144
- Risk of subsequent revision after primary and revision total joint arthroplasty.Clin Orthop Relat Res. 2010; 468: 3070
- Risk of complication and revision total hip arthroplasty among Medicare patients with different bearing surfaces.Clin Orthop Relat Res. 2010; 468: 2357
- A new method of classifying prognostic comorbidity in longitudinal studies: development and validation.J Chronic Dis. 1987; 40: 373
- Unicompartmental knee arthroplasty: a multicenter investigation with long-term follow-up evaluation.Clin Orthop. 1993; 286: 154
- Unicompartmental knee arthroplasty surgery: 10-year minimum follow-up period.J Arthroplasty. 1996; 11: 782
- Oxford medial unicompartmental knee arthroplasty. A survival analysis of an independent series.J Bone Joint Surg [Br]. 2001; 83: 191
- Unicompartmental Oxford meniscal knee arthroplasty.J Arthroplasty. 1987; 2: 1
- Unicompartmental knee arthroplasty: 3- to 10-year results in a community hospital setting.J Arthroplasty. 2002; 17: 293
- Unicompartmental knee arthroplasty. Clinical experience at 6- to 10-year follow-up.Clin Orthop. 1999; 367: 50
- The Oxford unicompartmental arthroplasty: a ten-year survival study.J Bone Joint Surg [Br]. 1998; 80B: 983
- The Swedish Knee Arthoplasty Register 1975-1997: an update with special emphasis on 41,223 knees operated on in 1988-1997.Acta Orthop Scand. 2001; 72: 503
- Incidence and reasons for reoperation after minimally invasive unicompartmental knee arthroplasty.J Arthroplasty. 2006; 21: 98
- Hospital for Special Surgery, New York, New York.Clin Orthop. 1993; 286: 94
- Long-term follow-up of nonmodular total knee replacements.Clin Orthop. 2002; 404: 34
- Survivorship analysis of total knee arthroplasty.J Bone Joint Surg [Am]. 1991; 73: 397
- Long-term follow-up of anatomic graduated components posterior cruciate-retaining total knee replacement.Clin Orthop. 2001; 388: 51
Article info
Publication history
Published online: April 05, 2012
Accepted:
February 23,
2012
Received:
September 29,
2011
Footnotes
The Conflict of Interests statement associated with this article can be found at doi:10.1016/j.arth.2012.02.019.
Source of funding: No external sources of funding were obtained for this study with no pertinent disclosures by any author concerning their work with this study.
Identification
Copyright
© 2012 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
