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Total hip arthroplasty for diffuse skeletal fluorosis.

Tony Chang1,2, Kathryn J Steven3, Gregory Charville4

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Summary

This case study details a woman diagnosed with diffuse skeletal fluorosis due to chronic inhalant abuse. Early symptoms mimicked other bone disorders, highlighting diagnostic challenges in complex medical histories.

Keywords:
Calcium and boneDegenerative joint diseaseDrugs: musculoskeletal and joint diseasesMusculoskeletal and joint disorders

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Area of Science:

  • Orthopaedic Surgery
  • Radiology
  • Toxicology

Background:

  • A woman in her late 50s with prior orthopaedic surgeries presented with severe hip pain.
  • Initial radiographs showed diffuse bone sclerosis, suggesting Paget's disease or metabolic bone disorders.

Purpose of the Study:

  • To report a case of diffuse skeletal fluorosis secondary to inhalant abuse.
  • To emphasize diagnostic challenges in patients with complex medical histories and potential substance abuse.

Main Methods:

  • Radiographic and advanced imaging (e.g., CT, MRI) were used for skeletal assessment.
  • Patient history, including chronic inhalant abuse (computer duster), was crucial for diagnosis.
  • Pathological examination of the femoral head after total hip arthroplasty was performed.

Main Results:

  • Widespread skeletal sclerosis and cortical thickening were observed throughout the axial skeleton.
  • Diagnosis of diffuse skeletal fluorosis was established, linked to difluoroethane exposure from inhalant abuse.
  • Pathology confirmed osteosclerotic bone disease with enlarged, irregular trabeculae and high osteoclastic activity.

Conclusions:

  • Diffuse skeletal fluorosis can present with symptoms mimicking other bone diseases, complicating diagnosis.
  • Inhalant abuse, particularly with computer dusters, is a potential cause of severe skeletal pathology.
  • Comprehensive patient evaluation and awareness of environmental/substance exposures are vital for accurate diagnosis and management.