Term: Knee Replacement Surgery

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Glossary Definition

Last Updated: 2020-05-21

Definition:

In knee replacement surgery, parts of the knee joint are replaced with prosthetic components. The surgery is done by separating the muscles and ligaments around the knee to expose the inside of the joint. The ends of the thigh bone (femur) and the shin bone (tibia) are removed as is often the underside of the kneecap (patella). The artificial parts are then cemented into place. The new knee typically has a metal shell on the end of the femur, a metal and plastic trough on the tibia, and sometimes a plastic button in the kneecap. Knee replacements often occur in the young due to injury and in older adults due to fractures, falls, and conditions associated with osteoarthritis.

Over time, knee replacement surgery is defined using different ICD procedure / CCI intervention codes, in any procedure / intervention field in the hospital discharge abstracts data.

• prior to April 1, 1990 - ICD-9-CM procedure code 81.41 (total knee replacement);
  
• April 1, 1990 to March 31, 2004 - ICD-9-CM procedure codes 81.54 (total knee replacement) or 81.55 (revision of knee replacement); and
  
• April 1, 2004 forward - CCI intervention codes 1.VG.53.LA-PN or 1.VG.53.LA-PP

In some cases, age restrictions (i.e.: age 40 and older) may apply to the definition.

NOTE: For fiscal years 1990/91 and 1991/92, a different ICD-9-CM procedure code (81.47) was used to identify knee replacement at Brandon General Hospital.

CAUTION: Procedure / intervention codes should be checked for every year of a study to ensure the appropriate codes are being used.

For more information, see:

• section 10.6 Knee Replacement in The Manitoba RHA Indicators Atlas by Martens et al. (2003)
  
• section 6.3 Knee Replacement Surgery in Sex Differences in Health Status, Health Care Use, and Quality of Care by Fransoo et al. (2005)
  
• section 8.5 Total Knee Replacement in Manitoba RHA Indicators Atlas 2009 by Fransoo et al. (2009)
  
• section 11.4 Knee Replacement Rates in Profile of Metis Health Status and Healthcare Utilization in Manitoba by Martens et al. (2010)
  
• section 11.5 Knee Replacement Surgery in Health and Healthcare Utilization of Francophones in Manitoba by Chartier et al. (2012)
  
• section 8.5 Total Knee Replacement in The 2013 RHA Indicators Atlas by Fransoo et al. (2013)
  
• section 8.5 Knee Replacement Surgery Rates in The 2019 RHA Indicators Atlas by Fransoo et al. (2019)

Related terms 

• Canadian Classification of Health Interventions (CCI)
• CCI
• Hospital Abstracts Data
• ICD-9-CM
• International Classification of Diseases, 9th Revision, with Clinical Modifications (ICD-9-CM)
• Joint Replacement Surgery
• Osteoarthritis (OA)
• Total Knee Replacement

References 

• Fransoo R, Martens P, Burland E, The Need to Know Team, Prior H, Burchill C. Manitoba RHA Indicators Atlas 2009. Winnipeg, MB: Manitoba Centre for Health Policy, 2009. [Report] [Summary] [Additional Materials] (View)
• Fransoo R, Martens P, The Need to Know Team, Burland E, Prior H, Burchill C, Chateau D, Walld R. Sex Differences in Health Status, Health Care Use, and Quality of Care: A Population-Based Analysis for Manitoba's Regional Health Authorities. Winnipeg, MB: Manitoba Centre for Health Policy, 2005. [Report] [Summary] [Additional Materials] (View)
• Fransoo R, Martens P, The Need to Know Team, Prior H, Burchill C, Koseva I, Bailly A, Allegro E. The 2013 RHA Indicators Atlas. Winnipeg, MB: Manitoba Centre for Health Policy, 2013. [Report] [Summary] [Additional Materials] (View)
• Martens PJ, Bartlett J, Burland E, Prior H, Burchill C, Huq S, Romphf L, Sanguins J, Carter S, Bailly A. Profile of Metis Health Status and Healthcare Utilization in Manitoba: A Population-Based Study. Winnipeg, MB: Manitoba Centre for Health Policy, 2010. [Report] [Summary] [Updates and Errata] [Additional Materials] (View)
• Martens PJ, Fransoo R, The Need to Know Team, Burland E, Jebamani L, Burchill C, Black C, Dik N, MacWilliam L, Derksen S, Walld R, Steinbach C, Dahl M. The Manitoba RHA Indicators Atlas: Population-Based Comparison of Health and Health Care Use. Winnipeg, MB: Manitoba Centre for Health Policy, 2003. [Report] [Summary] [Additional Materials] (View)
• Roos NP, Mustard CA. Variation in health and health care use by socioeconomic status in Winnipeg, Canada: does the system work well? Yes and no. Milbank Q 1997;75(1):89-111. [Abstract] (View)

Term used in 

• Chartier M, Finlayson G, Prior H, McGowan K, Chen H, de Rocquigny J, Walld R, Gousseau M. Health and Healthcare Utilization of Francophones in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)
• Fransoo R, Mahar A, The Need to Know Team, Anderson A, Prior H, Koseva I, McCulloch S, Jarmasz J, Burchill S. The 2019 RHA Indicators Atlas. Winnipeg, MB: Manitoba Centre for Health Policy, 2019. [Report] [Summary] [Updates and Errata] [Additional Materials] (View)