Advances in orthopedics
Reevaluating Projections: Total Knee Arthroplasty Volume Before and After COVID-19 in a Single Orthopedic Practice
By Hawley M, Anderson LF, Olfson ER and 1 others.
Abstract
Introduction
The increasing demand for primary (pTKA) and revision total knee arthroplasty (rTKA) has been well documented, with previous literature projecting growth through the year 2030. However, the COVID-19 pandemic introduced a significant disruption to healthcare delivery, and its long-term impact on arthroplasty volume trends remains unclear. This study examines the trajectory of pTKA and rTKA volumes in a high-volume private orthopedic practice before and after the pandemic to assess potential lasting effects.
Methods
This retrospective observational study included 11,589 pTKA and 857 rTKA procedures performed between January 1, 2018, and December 31, 2023. Quarterly volumes were analyzed using segmented interrupted time-series regression, with Q2 2020 (April-June) defined as the interruption. Models estimated the preinterruption trend, immediate level change, change in slope, and postinterruption trend using Newey-West standard errors. Sensitivity analyses excluded Q2 2020, modeled it as a temporary shutdown, and adjusted for calendar-quarter seasonality.