08/14/2024
Annual statistics for hip and knee replacements, 2021–2022 - Canadian Institute of Health Information:
• 58,635 hip and 58,443 knee replacements were performed in 2021–2022. These numbers are 6.0% and 5.7% higher, respectively, compared with 2020–2021 but still lower than before the COVID-19 pandemic. Using the average year-over-year increases in the pre-pandemic period, i we estimate that a total of 91,600 surgeries were not performed over the past 3 years, as would have been expected.
• As in previous years, a higher proportion of patients were female than were male, with 57% of hip replacements and 58% of knee replacements performed on female patients. ii • Most patients were age 65 and older. Among hip replacement patients, the most common age group was age 75 and older (female patients, 44.0%; male patients, 31.6%). For knee replacements, the most common age group was 65 to 74 (female patients, 41.2%; male patients, 42.3%).
• The most common diagnosis for primary hip and knee replacement patients was OA, at 69.3% and 99.4%, respectively. • There were 4.6% more hip and knee revisions performed compared with the previous year (8,942 in 2021–2022 versus 8,548 in 2020–2021).
• The top 3 reasons for hip and knee revisions combined were infection (32.5%), instability (14.3%) and aseptic loosening (14.0%).
• On average, patients undergoing inpatient revision surgery stayed in hospital more than twice as long as patients undergoing inpatient primary surgery (9.1 days versus 3.9 days, respectively).
• Patients treated with cemented hemiarthroplasty after hip fracture had a lower risk of revision than patients treated with hemiarthroplasty with cementless fixation. This finding holds true when controlling for age, s*x and surgeon volume.
• For knee replacements, there was no difference in revision risk for total knee replacement regardless of the type of fixation used (cemented, hybrid, cementless).
