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Related Experiment Video

Updated: Jun 25, 2026

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis
06:28

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

Published on: September 2, 2025

Toothpick injury simulating a pigmented villonodular synovialitis.

Bernd Wegener1, Andreas Ficklscherer, Peter Ernst Müller

  • 1Department of Orthopedic Surgery, Ludwig-Maximilians-University of Munich, Munich, Germany. bernd.wegener@med.uni-muenchen.de

Journal of Pediatric Surgery
|February 24, 2009
PubMed
Summary

A retained toothpick in the foot, initially thought removed, caused pigmented villonodular synovitis years later. This case highlights the need for thorough diagnosis and treatment of foreign body injuries to prevent complications.

Related Experiment Videos

Last Updated: Jun 25, 2026

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis
06:28

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

Published on: September 2, 2025

Area of Science:

  • Orthopedic Surgery
  • Pathology
  • Traumatology

Background:

  • Foreign body injuries to the foot are common, often presenting with minor wounds.
  • Prompt and complete removal of foreign material is typically curative.
  • This report details a delayed complication from an incompletely removed foreign body.

Observation:

  • A patient sustained a penetrating foot injury from a toothpick 10 years prior.
  • A painless swelling developed 8 years post-injury, diagnosed as pigmented villonodular synovitis.
  • Recurrence of swelling led to revision surgery, revealing a retained toothpick.

Findings:

  • Histological examination confirmed pigmented villonodular synovitis.
  • A nearly intact toothpick was discovered surrounded by a foreign body granuloma.
  • The foreign body likely initiated the chronic inflammatory process.

Implications:

  • Foreign body injuries, even seemingly minor ones, require meticulous diagnostic evaluation.
  • Incomplete removal can lead to long-term complications like synovitis.
  • Medical history of foreign body trauma warrants consideration of retained fragments in persistent or recurrent conditions.