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Methodology for Wrist

ODEP Criteria - Wrist Replacement

Valid from 31 July 2023

ODEP Wrist A* Criteria

‡ The upper 95% confidence interval for KM revision rate (1 - Survival) must be lower than the specified level

ODEP Wrist A Criteria

‡ The upper 95% confidence interval for KM revision rate (1 - Survival) must be lower than the specified level

ODEP Wrist B Criteria


Following the introduction of ODEP ratings for smaller volume implants such as elbow replacements, a group was set up in 2021 to explore the possibility providing ODEP ratings for hand and wrist implants. The devices available for arthroplasty in the hand and wrist cover a variety of implant types and design philosophies. The group initially decided to set up a system to assess total wrist arthroplasty, and the assessment criteria were adapted based on the methodologies utilised for other joints. A literature review of best available evidence was used to formulate the assessment criteria.

In early 2023 manufactures were invited to submit data ‘dummy run’ process to test how the new assessment criteria (shown above) worked in practice. The submissions were assessed by the hand and wrist panel and recommendations made in accordance with standard ODEP practice and in relation to the assessment criteria.

For implants that have more than one type of bearing surface available it was made clear that these need to be assessed separately and they will be issued with a separate ODEP rating based on survival data that specifically relates to that bearing surface. For example if a manufacture supplied a metal-on-metal bearing and a metal-on-polyethylene bearing each would receive its own ODEP rating if sufficient data were supplied for each. If a bearing type lacks sufficient data it will not be awarded an ODEP rating.

Following this successful ‘dummy run’ manufactures were invited in late 2023 to submit data for the first official round of total wrist arthroplasty assessment. Following a detailed review the panel were able to award the first ODEP ratings for a wrist implant in November 2023. Going forward there will be regular opportunities to submit data for assessment by the panel. The dates of these will be advertised through the ODEP website.

The panel recognise that this process is new to total wrist arthroplasty and the assessment criteria will be regularly reviewed to ensure that the ratings awarded remain robust.