Please find the document 'Prostheses used in hip, knee, ankle, elbow and shoulder replacements 2018' in the right-hand column under 'PDF downloads'.
This accompanies the main NJR Annual Report and contains information on:
Prostheses used in hip procedures
Prostheses used in knee procedures
Prostheses used in ankle procedures
Prostheses used in elbow procedures
Prostheses used in shoulder procedures
Cement use and
Bone substitute use
The Implant Scrutiny Committee reports Level 1 outlier implants to the MHRA. Since the committee’s formation in 2009 there have been four hip stems, nine hip acetabular (cup) components and 28 hip stem/cup combinations reported. Seven knee brands have been notified.
An implant is considered to be a Level 1 outlier when its Prosthesis Time Incident Rate (PTIR) is more than twice the PTIR of the group, allowing for confidence intervals. These are shown as the number of revisions per 100 prosthesis-years. As of March 2015, we have started to identify the best performing implants, these would have a PTIR less than half that of their group, allowing for confidence intervals. To date no implants have reached that level.
Components and constructs previously reported to MHRA, but no longer at Level 1, are not listed.
Hip implant performance
Table 1 Level 1 outlier stems/femoral components reported to MHRA. Table 2 Level 1 acetabular components reported to MHRA.Table 3 Level 1 outlier stem/cup combinations. Best performing hip implants
There are no hip implants or combinations performing statistically less than half their expected PTIR.
Knee implant performance
Table 4 Level 1 outlier implants reported to MHRA. All of these implants have been discontinued.
Best performing knee implants
There are no knee implants performing statistically less than half their expected PTIR.