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Analysis of synovial fluid components of hydrarthrosis in long-term hemodialysis patients

E Shiota1, M Maekawa, M Ohtani

  • 1Department of Orthopaedic Surgery, Chikushi Hospital, Fukuoka University, Chikushino, Fukuoka 818-8502, Japan.

Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association
|June 17, 1999
PubMed

Insights

Synovial fluid analysis in long-term hemodialysis patients reveals similarities to osteoarthritis but a chondroitin sulfate ratio resembling rheumatoid arthritis, suggesting potential synovitis. Further research is needed to determine the cause.

Area of Science:

  • Rheumatology
  • Nephrology
  • Biochemistry

Background:

  • Long-term hemodialysis (HD) patients may experience joint complications.
  • Understanding synovial fluid composition is crucial for diagnosing and managing joint conditions.

Purpose of the Study:

  • To investigate and compare synovial fluid components in long-term hemodialysis patients with those in osteoarthritis (OA) and rheumatoid arthritis (RA) patients.
  • To explore potential differences in hyaluronic acid, protein, chondroitin sulfate isomers (C6S, C4S), and viscosity.

Main Methods:

  • Synovial fluid samples were collected from HD (n=43), OA (n=21), and RA (n=26) patients.
  • Concentrations of hyaluronic acid, protein, C6S, and C4S were measured.
  • Synovial fluid viscosity was assessed.

Main Results:

  • Hemodialysis patients showed synovial fluid viscosity and hyaluronic acid concentrations similar to OA patients.
  • The chondroitin 6-sulfate/chondroitin 4-sulfate (C6S/C4S) ratio in HD patients was comparable to RA patients.
  • These findings suggest the presence of synovitis in hemodialysis-induced hydrarthrosis.

Conclusions:

  • Synovial fluid analysis in long-term HD patients indicates a unique profile with features of both OA and RA.
  • The observed C6S/C4S ratio suggests underlying synovitis in HD patients.
  • The etiology of this potential synovitis in hemodialysis patients requires further investigation.

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