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Delayed Total Knee Replacement with Hylan G-F 20.

David D Waddell1, Biji Joseph2

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Hylan G-F 20 injections effectively delay the need for total knee replacement (TKR) in patients with severe osteoarthritis (OA). This treatment demonstrated a significant delay in TKR for a majority of patients, extending relief beyond seven years.

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Area of Science:

  • Orthopedics
  • Rheumatology
  • Biomaterials Science

Background:

  • Osteoarthritis (OA) is a degenerative joint disease leading to significant pain and disability.
  • Total knee replacement (TKR) is a common surgical intervention for end-stage OA.
  • Hylan G-F 20, a hyaluronic acid derivative, is used for OA symptom management.

Purpose of the Study:

  • To evaluate the long-term efficacy of Hylan G-F 20 in delaying TKR in patients with Grade IV OA.
  • To assess the influence of Hylan G-F 20 on the time to TKR in two distinct patient cohorts.

Main Methods:

  • Retrospective analysis of prospective data from 1997-2010.
  • Inclusion of two cohorts: full cohort (1,863 knees) and original cohort (1,187 knees).
  • Survival analysis to determine time to TKR after Hylan G-F 20 treatment.

Main Results:

  • Approximately 25-28% of knees underwent TKR, with an average delay of 2.8-3.1 years post-injection.
  • Survival analysis indicated TKR was delayed for over 7 years in 75% of patients.
  • Age was a significant predictor of time to TKR; mild to moderate synovitis noted with repeat injections.

Conclusions:

  • Hylan G-F 20 treatment continues to demonstrate a significant ability to delay the need for total knee replacement in patients with Grade IV osteoarthritis.
  • The findings support the long-term utility of Hylan G-F 20 as a conservative management option for severe OA, extending the period before surgical intervention is required.