ACR Meeting Abstracts

ACR Meeting Abstracts

  • Meetings
    • ACR Convergence 2024
    • ACR Convergence 2023
    • 2023 ACR/ARP PRSYM
    • ACR Convergence 2022
    • ACR Convergence 2021
    • ACR Convergence 2020
    • 2020 ACR/ARP PRSYM
    • 2019 ACR/ARP Annual Meeting
    • 2018-2009 Meetings
    • Download Abstracts
  • Keyword Index
  • Advanced Search
  • Your Favorites
    • Favorites
    • Login
    • View and print all favorites
    • Clear all your favorites
  • ACR Meetings

Abstract Number: 1840

Value of Various Intra-Articular Injections for Knee Osteoarthritis Management

Hanna Mass1, Jamie Collins1, david Hunter2, Catherine Yang1, Morgan Jones1, Stephen Messier3, Tuhina Neogi4, A. David Paltiel5, Jeffrey Katz1 and Elena Losina6, 1Brigham and Women's Hospital, Boston, MA, 2Sydney Musculoskeletal Health, University of Sydney, St. Leonards, Australia, 3Wake Forest University, Winston-Salem, NC, 4Boston University School of Medicine, Boston, MA, 5Yale School of Public health, New Haven, CT, 6Brigham and Women's Hospital, Boston, MA

Meeting: ACR Convergence 2023

Keywords: corticosteroids, Cost-Effectiveness, Hyaluronan, Osteoarthritis, Outcome measures

  • Tweet
  • Click to email a link to a friend (Opens in new window) Email
  • Click to print (Opens in new window) Print
Session Information

Date: Tuesday, November 14, 2023

Title: (1840–1861) Health Services Research Poster III

Session Type: Poster Session C

Session Time: 9:00AM-11:00AM

Background/Purpose: Intra-articular injections (IAI) are commonly used to relieve pain and delay total knee replacement (TKR) in persons with knee OA. Despite higher costs and conflicting evidence of efficacy, utilization of hyaluronic acid (HA) and platelet rich plasma (PRP) IAIs have increased dramatically over the last decade.

Methods: We used the Osteoarthritis Policy (OAPol) Model, a widely published and validated microsimulation of knee OA, to assess the value of alternative IAIs. We considered 5 strategies: 1) no IAI, 2) saline (placebo), 3) corticosteroid (CS), 4) HA, and 5) PRP. We assumed that IAIs are offered to patients with inadequate pain control from NSAIDs. In the model, if and when IAIs do not provide adequate pain relief, OA care progresses to opioids and/or TKR. We used a random-effects meta-analysis to estimate IAI-specific pain reduction from high-quality (Jadad score 4+) RCTs. We analyzed data from 11 RCTs for saline, 12 for CS, 24 for HA, and 8 for PRP. We estimated pain reductions for one IAI series of -14 points for saline at 3 months, -22 for CS at 3 months, -22 for HA at 6 months, and -17 for PRP at 12 months. The cost of IAIs included the visit, IAI administration and medication costs. We derived the cost of CS ($315), HA ($795), and saline ($309) IAI from the Medicare Drug Fee Schedule and estimated the cost of PRP ($2586) from literature. In the base case analysis, based on the literature, we assumed that repeat CS injections increase the risk of OA progression (HR=3.02). We ran the model over the remaining lifetime of a cohort with average age 50 years at the start of simulation, pain 51 (WOMAC, 0-100, 100 worst), 50% KL3/50% KL2. We determined the value of specific IAIs using incremental cost-effectiveness ratios (ICERs), evaluated from the health care perspective and calculated as the ratio of the difference in lifetime costs to the difference in quality adjusted life years (QALYs) between two strategies. The IAI that maximizes QALYs with ICER< willingness to pay (WTP) threshold is considered the most cost-effective strategy.

Results: QALYs and costs for each strategy are presented in Table 1. Assuming CS does not increase the risk of OA progression, CS results in an ICER of $11,800/QALY compared to no injection, and PRP results in an ICER of $177,000/QALY compared to CS. Assuming CS does increase the risk of OA progression, the resultant ICERS are $12,900/QALY for saline compared to no injection, $32,500/QALY for CS compared to saline, $62,100/QALY for HA compared to CS, and $159,400/QALY for PRP compared to HA. If CS increased the risk of OA progression, PRP would achieve ICERs of $100K/QALY ($50K/QALY) at a price of $1,965 ($1,448). If CS did not increase risk of OA progression, even lower PRP prices ($1,655 and $1,086) would be required to attain these ICER thresholds.

Conclusion: For WTP thresholds between $11,800 and $62,100/QALY, CS is the preferred strategy, regardless of what we assume about their impact on OA progression. If CS has no impact on risk of OA progression, it remains the preferred strategy until WTP exceeds $177,000/QALY. If CS increases risk of OA progression, HA becomes preferred for WTP > $62,000.

Supporting image 1


Disclosures: H. Mass: None; J. Collins: None; d. Hunter: None; C. Yang: None; M. Jones: Biosplice, 1, 2, Pacira, 5, Regeneron, 1, 2; S. Messier: None; T. Neogi: None; A. Paltiel: None; J. Katz: Biosplice, 5; E. Losina: None.

To cite this abstract in AMA style:

Mass H, Collins J, Hunter d, Yang C, Jones M, Messier S, Neogi T, Paltiel A, Katz J, Losina E. Value of Various Intra-Articular Injections for Knee Osteoarthritis Management [abstract]. Arthritis Rheumatol. 2023; 75 (suppl 9). https://acrabstracts.org/abstract/value-of-various-intra-articular-injections-for-knee-osteoarthritis-management/. Accessed .
  • Tweet
  • Click to email a link to a friend (Opens in new window) Email
  • Click to print (Opens in new window) Print

« Back to ACR Convergence 2023

ACR Meeting Abstracts - https://acrabstracts.org/abstract/value-of-various-intra-articular-injections-for-knee-osteoarthritis-management/

Advanced Search

Your Favorites

You can save and print a list of your favorite abstracts during your browser session by clicking the “Favorite” button at the bottom of any abstract. View your favorites »

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM ET on November 14, 2024. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].

Wiley

  • Online Journal
  • Privacy Policy
  • Permissions Policies
  • Cookie Preferences

© Copyright 2025 American College of Rheumatology