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GOUT. Why so angry?. “Dino-sores”. Quiz. Metabolic Syndrome X does not include: High Cholesterol (HLD) High Blood Pressure (HTN) High Fat (Obesity) High Sugar (DM) Super Hero Powers. Quiz. Metabolic Syndrome X does not include: High Cholesterol (HLD) High Blood Pressure (HTN)
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Quiz • Metabolic Syndrome X does not include: • High Cholesterol (HLD) • High Blood Pressure (HTN) • High Fat (Obesity) • High Sugar (DM) • Super Hero Powers
Quiz • Metabolic Syndrome X does not include: • High Cholesterol (HLD) • High Blood Pressure (HTN) • High Fat (Obesity) • High Sugar (DM) • Super Hero Powers
Synovial Joint Anatomy • Synovial fluid – raw egg white • Tendon – bone to muscle • Ligament – bone to bone
Synovial Joint Physiology • Movement • Clean • Cartilage
Diet • Exercise • Genetics Uric Acid
Monosodium Urate Crystals (MSU) • Uric acid > 6.8 • Temperature
Tophus • Crystals • Surrounded by Immune cells, epithelial cells, fibroblasts
Tophus • crystals surrounded by inflammatory reaction
1. Asymptomatic Hyperuricemia • Blood Concentration > 6.8 • Sometimes leads to Gout
2. Acute Gouty Arthritis • First Metatarsal phalangeal (MTP) joint • Macrophage response • “Inflammation”
Morphology • Dense neutrophilic infiltrate permeating the synovium and synovial fluid. • Long, slender needle-shaped monosodium urate crystals are frequently found in the cytoplasm of the neutrophils as well as in small clusters in the synovium. • The synovium is edematous and congested, and contains scattered mononuclear inflammatory cells. • When the episode of crystallization abates and the crystals solubilize, the attack remits.
3. Intercritical Period • Complete remission • Medication, diet, exercise • Second attack within a couple years
4. Chronic Tophaceous Gouty Arthritis • Joint Damage • Tophus Formation • 10 years later
Morphology • Evolves from repetitive precipitation of urate crystals during acute attacks. • The urates can heavily encrust the articular surfaces and form visible deposits in the synovium. • The synovium becomes hyperplastic, fibrotic, and thickened by inflammatory cells, forming a pannus that destroys the underlying cartilage, and leading to juxtaarticular bone erosions. • In severe cases fibrous or bony ankylosis ensues, resulting in loss of joint function.
Summary • Asymptomatic • Acute Attack • Intercritical Period • Chronic Tophaceous Gout
Movies to watch • Gout in blood https://www.youtube.com/watch?v=ymhmqoRR_y8 • Gout in knee joint https://www.youtube.com/watch?v=vuoBE5uE9y8