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Updated: Jun 1, 2025

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint
Published on: July 22, 2021
Synovial Fistula Associated With Total Knee Replacement Aseptic Loosening and Polyethylene Wear
Saul Hernandez-Rodriguez1, Liannette Padilla-Martinez1
1Hospital Pavia Arecibo, Arecibo Orthopedic Institute, Arecibo, PR, USA.
Abstract:
Synovial fistula of the knee occurs when a defect in the joint capsule creates a connection between skin, bursa, and a near tissue, manifesting as an opening with continuous draining fluid or a cyst. This is a case of an 80-year-old male who developed a synovial fistula with cystic presentation 6 years after the primary total knee arthroplasty. Management included a total knee arthroplasty revision surgery with intraoperative identification of the fistula with methylene blue, and using a gelatin-thrombin matrix for closure. This case shows a possible complication of catastrophic polyethylene insert wear and management.
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