Related Experiment Video
Updated: Aug 7, 2026
08:32
A Pre-Clinical Model of Synovitis Using Ex vivo Human Synovial Tissue with Preserved Function and Architecture
Published on: March 20, 2026
[Low-grade-/high-grade-synovitis: synovitis-score as a gold standard?]
V Krenn1, L Morawietz, B König
1Institut für Pathologie, Moltkestrasse 32, 54292 Trier. krenn@patho-trier.de
Der Orthopade
|July 5, 2006
Summary
A new histopathological grading system for chronic synovitis stratifies disease severity. This synovitis score helps differentiate between rheumatic and non-rheumatic joint diseases, aiding in diagnosis.
Area of Science:
- Histopathology
- Orthopedic Pathology
- Rheumatology
Context:
- Synovectomy specimens are crucial for diagnosing joint diseases.
- Currently, no standardized histopathological grading system exists for chronic synovitis.
- This limits objective assessment and disease classification.
Purpose:
- To develop and validate a semiquantitative histopathological grading system for chronic synovitis.
- To correlate synovitis scores with clinical diagnoses of degenerative and inflammatory joint diseases.
- To establish a tool for differentiating rheumatic from non-rheumatic joint conditions.
Summary:
- A novel synovitis score was developed, grading three compartments: lining cell layer, synovial stroma cell density, and leukocytic infiltrate.
- Scores range from 0-9, categorizing synovitis as absent (0-1), low-grade (2-4), or high-grade (5-9).
- Analysis of 618 synovial specimens showed significant correlation between synovitis scores and disease type, with high inter-observer reliability.
Impact:
- The proposed synovitis score effectively stratifies chronic synovitis into low-grade and high-grade categories.
- This grading system aids in distinguishing between rheumatic and non-rheumatic joint diseases.
- It provides a valuable diagnostic tool for pathologists and clinicians in joint disease management.
Related Concept Videos
01:22Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies
The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
01:26Nephrotic Syndrome II : Assessment and Medical Management
IntroductionNephrotic syndrome is a kidney disorder marked by excessive protein loss in the urine, leading to various systemic complications. This condition often results from damage to the glomeruli—the kidney's filtering units—causing proteinuria, low blood protein levels, and fluid retention. Understanding the assessment, diagnosis, and management of nephrotic syndrome is essential for effective treatment and prevention of further kidney damage.AssessmentPatient History: Document any history...
01:19Pericarditis II: Clinical Features and Diagnostic Tests
Pericarditis is distinguished by inflammation of the pericardium, the fibrous sac that encases the heart. It can be acute, lasting less than six weeks, or chronic, persisting for over three months. Understanding its clinical manifestations and diagnostic findings is crucial for timely and effective management.Clinical ManifestationsWhile pericarditis can be asymptomatic, it usually presents with characteristic symptoms such as:Chest Pain: The most characteristic symptom of pericarditis is chest...
01:15Myasthenia Gravis: Diagnostic Tests
Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...