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Related Experiment Video

Updated: Jul 14, 2026

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Predicting joint replacement waiting times.

Lauren E Cipriano¹, Bert M Chesworth, Chris K Anderson

¹Institute for Technology Assessment, Massachusetts General Hospital, Boston, MA, USA.

Health Care Management Science

|July 5, 2007

Summary

To reduce hip and knee replacement wait times in Ontario, a 12% annual increase in surgical supply is needed. Regional allocation based on wait times, not just population, improves efficiency and long-term outcomes.

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Area of Science:

Orthopedic Surgery
Health Services Research
Health Economics

Background:

Median wait times for total hip and knee replacement in Ontario exceed 6 months.
Extended waiting periods may diminish post-operative benefits for patients.

Purpose of the Study:

To estimate the proportion of patients receiving timely hip and knee replacement surgery.
To evaluate the impact of demand growth and surgical supply variations on wait times over 10 years.

Main Methods:

Development of a simulation model to project surgical wait times.
Analysis of various demand growth scenarios (estimated at 8.7% annually).
Assessment of different annual surgical supply increase rates (e.g., 10%, 12% or greater).

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Last Updated: Jul 14, 2026

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Main Results:

A 10% annual increase in surgical supply is insufficient to maintain current wait times amidst projected demand growth.
An annual supply increase of 12% or greater is required to reduce wait times within 10 years.
Regional allocation of surgeries proportional to wait times is more effective than population-based allocation for long-term wait time reduction.

Conclusions:

Significant increases in surgical capacity are necessary to address long hip and knee replacement wait times in Ontario.
Optimized, needs-based regional allocation strategies can enhance surgical access and improve patient outcomes.