Wait Times for Knee Replacement (Percentiles)
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care.
This indicator is calculated based on provincial and national wait time data for the first two quarters of the fiscal year (April–September), and includes all procedures that are publicly funded under the provincial health plan.
Measures:
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care.
Unit of Analysis: Episode of care
Calculation of all-Canada estimates:
All-Canada Median and 90th Percentile Waits
The national estimate for the 50th and 90th percentiles was calculated using a weighted average of provincial submissions. Weights were calculated using provincially submitted surgical volumes.
Not applicable
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care
Methodology
Name
Wait Times for Knee Replacement (Percentiles)
Short/Other Names
Not applicable
Description
The number of days a patient waited, between the date when the patient and the appropriate physician agreed to a total knee replacement and the patient was ready to receive it, and the date the patient received a planned total knee replacement
Rationale
In 2004, Canada's first ministers agreed to work toward reducing wait times for five priority areas: cancer treatment, cardiac care, diagnostic imaging, joint replacement and sight restoration. CIHI was mandated to collect wait time information and monitor provincial progress in meeting benchmarks.
Many factors affect wait times, for example, availability of resources, efficiency of a particular facility, seasonal effects, volumes, patient choice, patient condition, follow-up care and/or treatment complexity.
This indicator can be used to help understand access to care and to know how provinces are performing in providing access to services.
Interpretation
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care.
HSP Framework Dimension
Health system outputs: Access to comprehensive, high-quality health services
Areas of Need
Getting Better
Targets/Benchmarks
Within 26 weeks (182 days)
Available Data Years
to (fiscal years)
Geographic Coverage
- All provinces
Reporting Level/Disaggregation
- National
- Province/Territory
- Region
Indicator Results
Update Frequency
Every year
Latest Results Update Date
Updates
There may be some provincial exceptions to the standard methodology each year. For details, please see the Trend tab of CIHI’s wait times visualization.
Description
This indicator is calculated based on provincial and national wait time data for the first two quarters of the fiscal year (April–September), and includes all procedures that are publicly funded under the provincial health plan.
Measures:
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care.
Unit of Analysis: Episode of care
Calculation of all-Canada estimates:
All-Canada Median and 90th Percentile Waits
The national estimate for the 50th and 90th percentiles was calculated using a weighted average of provincial submissions. Weights were calculated using provincially submitted surgical volumes.
Type of Measurement
Number - 50th percentile, 90th percentile
Denominator
Description:
Not applicable
Numerator
Description:
50th percentile: Half of all patients waited this many days before receiving care.
90th percentile: 1 out of 10 patients waited this many days or more before receiving care
Inclusions:
- Age 18 and older
- 1.VG.53.^^ Implantation of internal device, knee joint (except 1.VG.53.LA-SL-N — cement spacer)
- 1.VP.53.^^ Implantation of internal device, patella
- All knee replacements (primary and revision); bilateral joint replacements count as a single wait
- Unicondylar procedures
- All priority levels
Exclusions:
- Emergency cases
- Abandoned procedures
- Days when patient was unavailable
Method of Adjustment
Not applicable
Adjustment Applied
None
Geographic Assignment
Place of service
Data Sources
- Provincial Wait Times Registry
Data may come from various sources, depending on the province.
Caveats and Limitations
Some provinces may have some exceptions and their methodology may be slightly different than the standard methodology. For details, please see the Trend tab of CIHI’s wait times visualization.
Trending Issues
Since 2008, an increasing number of provinces have adapted to the standard methodology in order to increase the comparability of results. When comparing data for a particular province over time, attention should be given to the exceptions. For details, please see the Trend tab of CIHI’s wait times visualization.
References
Health Canada. A 10-Year Plan to Strengthen Health Care. Health Canada. Updated September 16, 2004. Accessed June 7, 2013.
How to cite:
Canadian Institute for Health Information. Wait Times for Knee Replacement (Percentiles). Accessed April 25, 2025.
If you would like CIHI information in a different format, visit our Accessibility page.
Comments
In 2023, Saskatchewan began reporting wait times based on a new set of health regions. Data for previous years (from the old health regions) has been mapped to the new health regions.