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Alexander Shared "MSKS week 1" - 22 Picmonics

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MSKS week 1

Types of Fractures
Nondisplaced
Displaced
Incomplete
Complete
Closed
Open
Direction of Fracture Line
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2 mins
Osteogenesis Imperfecta
Pathophysiology
Autosomal Dominant
Decreased Type I Collagen Production
Symptoms
Phenotypically Diverse
Brittle Bone Disease
Fractures from Minimal Trauma
Confused with Child Abuse
Hearing Loss
Dental Imperfections
Blue Sclera
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1 min
Paget's Disease of Bone
Pathophysiology
Men > Age 40
Increased Osteoblast and Osteoclast activity
Mosaic Pattern
Signs and Symptoms
Increased Skull Diameter
Hearing Loss
Fractures
Bone Ache and Joint Pain
High Output Heart Failure
Diagnosis
Bone Scan
Normal Parathyroid hormone (PTH) and Calcium
Elevated ALP
Treatment
Bisphosphonate
Calcitonin
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2 mins
Muscular Dystrophy
Mechanism
X-linked Recessive
Signs and Symptoms
Muscle Weakness
Motor Problems
Gower Sign
Large Calves
Waddling Gait
Loss of Ambulation
Consideration
Cardiac and Respiratory Failure
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2 mins
Myotonic Dystrophy
Pathophysiology
Autosomal Dominant
Trinucleotide Repeat
CTG
Signs and Symptoms
Facial Muscle Weakness
Frontal Balding
Sustained Grip
Conduction Defects
Cataracts
Selective Atrophy of Type 1 Fibers
Testicular Atrophy
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2 mins
Ehlers-Danlos Syndrome Types
Types
Types 1 and 2 - Classical
Type V Collagen Mutation
Joints and Skin
Type 3 - Hypermobility
Most Common
Tenascin X Deficiency
Joint Instability
Type 4 - Vascular
Type III Collagen Mutation
Vascular and Organ Rupture
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2 mins
Polymyositis / Dermatomyositis Disease
Pathophysiology
Idiopathic Inflammatory Myopathy
More Common in Women
Endomysial Inflammation with CD8+ Cells (Polymyositis)
Perimysial Inflammation with CD4+ Cells (Dermatomyositis)
Signs and Symptoms (Both)
Symmetric Proximal Muscle Weakness
Dysphagia
Lung and Cardiac Involvement
Signs and Symptoms (Dermatomyositis)
Malar Rash
Shawl-like Shoulder Rash
Gottron Papules on Knuckles
Heliotrope Rash
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3 mins
Polymyositis / Dermatomyositis Diagnosis and Treatment
Diagnosis
Increased CK (CPK)
Increased Aldolase
Anti-JO-1 Antibody
Anti-SRP Antibody
Antinuclear Antibody
Abnormal EMG
Biopsy
Treatment
Corticosteroids
Methotrexate
Azathioprine
Treatment For Resistant Disease
Intravenous Immunoglobulin (IVIG)
Cyclophosphamide
Rituximab
Calcineurin Inhibitors
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2 mins
Wilson's Disease Symptoms
Cirrhosis
Hepatocellular Carcinoma
Basal Ganglia Degeneration
Dementia
Dyskinesia
Asterixis
Kayser-Fleischer Rings
Slit Lamp Exam
Hemolytic Anemia
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2 mins
Vitamin D Deficiency
Signs & Symptoms
Rickets in children
Bending bones
Rachitic rosary
Breast milk has decreased vitamin D
Osteomalacia in adults
Tetany from Hypocalcemia
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2 mins
Vitamin C Mechanism and Deficiency
Mechanism
Ascorbic acid
Antioxidant
Protects Against Free Radicals
Keeps Iron in Reduced State
Hydroxylation of Proline and Lysine
Necessary for Dopamine B Hydroxylase
Deficiency Signs and Symptoms
Scurvy
Swollen Gums
Bruising
Poor Wound Healing
Hemarthrosis
Perifollicular Hemorrhages
Anemia
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4 mins
Williams Syndrome
Pathophysiology
Microdeletion Of Long Arm Of Chromosome 7
Elastin Gene
Signs and Symptoms
Elfin Facies
Intellectual Disability
Extreme Friendliness with Strangers
Well Developed Verbal Skills
Cardiovascular Problems
Hypercalcemia
Increased Sensitivity To Vitamin D
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2 mins
Osteoporosis Interventions
Increased Calcium Intake
Vitamin D Supplements
Bisphosphonates
Raloxifene
Denosumab
Calcitonin
Teriparatide
Bone Densitometry (DEXA) Scan
Weight Bearing Exercises
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2 mins
Achondroplasia
Mechanism
Autosomal Dominant
Advanced Paternal Age
Most Common Cause of Dwarfism
Mutation of FGFR3 (Fibroblast Growth Factor Receptor 3)
Defective Endochondral Ossification
Symptoms
Delayed Motor Milestones
Shortened Limbs with Normal Axial Skeleton Size
May Develop Hydrocephalus
Symptoms of Spinal Stenosis
Normal Life Span and Fertility
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2 mins
Hunter Syndrome
Pathophysiology
X-linked Recessive
Mucopolysaccharidoses
Iduronate Sulfatase Deficiency
Increased Dermatan Sulfate
Increased Heparan Sulfate
Signs and Symptoms
No Corneal Clouding
Aggressive Behavior
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1 min
Osteoid Osteoma and Osteoblastoma
Characteristics
Benign Bone Tumors
Osteoid Osteoma
Osteoid Osteoma
Cortex of Long Bones
Pain Relieved by NSAIDs
Pain Worse at Night
<2 cm
Radiolucent Nidus with Surrounding Sclerosis
Osteoblastoma
Osteoblastoma
Spine
Pain Not Relieved by NSAIDs
> 2 cm
Radiolucent Nidus without Surrounding Sclerosis
Management
Surgery
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3 mins
Osteosarcoma
Pathophysiology
Osteogenic Sarcoma
Peak incidence men 10-20 years old
Metaphysis of Long Bones
Knee Region
Radiation
Familial Retinoblastoma
Paget's Disease
Diagnosis
Codman Triangle
Sunburst Pattern from Elevated Periosteum
Grave Prognosis
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2 mins
Osteochondroma
Characteristics
Most Common Benign Bone Tumor
Males Under 25
Cartilage-capped Spurs
Metaphysis of Long Bones
Small Risk of Chondrosarcoma
Clinical Features
Painless Mass near Joint
Painful if Growing or Malignant
Workup
X-Ray
MRI if Concern for Malignancy or Functional Limitation
Management
Monitoring
Surgery
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3 mins
Chondrosarcoma
Pathophysiology
Cartilaginous tumor
Malignant
Men 30-60 years old
Pelvic and femur bones
Signs & Symptoms
Glistening mass in medullary cavity
Can be primary in origin or from osteochondroma
Metastasize to lungs
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1 min
Ewing's Sarcoma
Epidemiology
Most Common in Boys < 15 years old
Pathophysiology
11;22 Translocation
Characteristics
Long bones, Pelvis, Ribs
Diaphysis
Small Blue Cells
Malignant
Aggressive
Onion-skin Appearance
TREATMENT
Responsive to Chemotherapy
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2 mins

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Alexander Shared MSKS week 1 - 22 Picmonics