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Updated: Jul 25, 2025

Knee Arthrocentesis in Adults
Published on: February 25, 2022
[Acute monoarthritis in a third level hospital]
Augusto Douthat1, Andrés Rodríguez Ruiz1, Martín Milanesio1
1Servicio de Clínica Médica, Hospital Privado Universitario de Córdoba, Córdoba, Argentina.
Septic arthritis was the leading cause of acute monoarthritis (AM), followed by microcrystalline causes like gout. Synovial fluid analysis is crucial for diagnosing AM and acute bursitis.
Area of Science:
- Rheumatology
- Infectious Diseases
- Crystal Arthropathies
Context:
- Acute monoarthritis (AM) and acute bursitis are common causes of joint pain requiring prompt diagnosis.
- Synovial fluid analysis is essential for differentiating the causes of these conditions.
Purpose:
- To determine the frequency and clinical-analytical characteristics of AM and acute bursitis.
- To identify the primary causes and affected joints in these conditions.
Summary:
- A 6-year retrospective study in Argentina analyzed 180 AM and 12 acute bursitis episodes.
- Septic arthritis (36%) was the most frequent cause of AM, followed by microcrystalline AM (28%), including gout and calcium pyrophosphate dihydrate (CPPD) deposition disease.
- The knee was the most commonly affected joint.
Impact:
- Highlights septic arthritis as the leading cause of AM, necessitating timely diagnosis and treatment.
- Emphasizes the critical role of synovial fluid analysis in the differential diagnosis of acute joint inflammation.
- Provides epidemiological data on AM and bursitis in a specific hospital setting.
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