Raegan Shared "MSK" - 73 Picmonics
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MSK
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
2 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
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
2 mins
Giant Cell Tumor
- Pathophysiology
- Osteoclastoma
- Epiphyseal End of Long Bones
- Peak Incidence 20-40 Years
- Benign
- Knee Region
- Diagnosis
- Soap Bubble Appearance on X-ray
- Spindle-shaped Cells
- Multinucleated Giant Cells
46 secs
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
3 mins
Langerhans Cell Histiocytosis
- Characteristics
- Antigen Presentation Defect
- Lytic Bone Lesions
- Skull
- Presentation
- Hypopituitarism
- Diabetes Insipidus
- Skin Rash
- Recurrent Otitis Media
- Diagnosis
- Birbeck Granules
- "Tennis Racket" Appearance
- S100 Positive
- Management
- Observation
- Prednisone +/- Vinblastine
4 mins
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
3 mins
Osteoma
- Benign
- Cortex
- Compact and Wavy (Trabecular) Bone
- Skull and Paranasal Sinuses
- Symptoms are Variable
- ASSOCIATIONS
- Gardner Syndrome
- Tuberous Sclerosis
- CHARACTERISTICS
- Lesions with Density Identical to the Cortex
- TREATMENT AND PROGNOSIS
- Observation
- No Malignant Transformation
3 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
2 mins
Osteopetrosis (Marble Bone Disease)
- Pathophysiology
- Defective Osteoclast Resorption
- Carbonic Anhydrase II Mutation
- Lack of Acidic Environment
- Symptoms
- Fractures
- Nerve Palsies
- Diagnosis
- Myelophthisic Anemia
- Erlenmeyer Flask Bones
- Normal ALP and PTH
- Normal Calcium and Phosphorus
- Bone-in-bone Appearance
- Treatment
- Bone Marrow Transplant
2 mins
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
2 mins
Renal Osteodystrophy
- Pathophysiology
- Chronic Kidney Disease
- Secondary Hyperparathyroidism
- Hyperphosphatemia
- Hypocalcemia
- Decreased Calcitriol
- Clinical Features
- Osteitis Fibrosa Cystica
- Osteoporosis
- Osteomalacia
- Management
- Treating Underlying Disorder
2 mins
Pseudohypoparathyroidism Type 1A
- Characteristics
- Defect in PTH Receptor
- Increased PTH
- Hypocalcemia and Hyperphosphatemia
- Autosomal Dominant
- Mutation in GNAS Gene
- Maternal Imprinting
- Clinical Features
- Short Stature
- Shortened 4th Fingers
- Developmental Delay
- Subcutaneous Calcifications
- Tetany
- Seizures
- Management
- Calcium and Vitamin D Supplementation
3 mins
Deep Gluteal Muscles
- General Action
- Lateral Rotation and Abduction
- Muscles
- Gluteus Minimus
- Medially Rotates Leg
- Piriformis
- Superior Gemellus
- Obturator Internus
- Inferior Gemellus
- Quadratus Femoris
- Other Structures
- Sacrotuberous Ligament
1 min
Hand Muscles
- Characteristics
- Opponens Pollicis
- Abductor Pollicis Brevis
- Flexor Pollicis Brevis
- Flexor Digiti Minimi Brevis
- Abductor Digiti Minimi Brevis
- Opponens Digiti Minimi
- Lumbricals
- Interossei (Palmar and Dorsal)
- Palmaris Brevis
- Adductor Pollicis
2 mins
Rotator Cuff
- External Rotation
- Teres Minor
- Infraspinatus
- Internal Rotation
- Subscapularis
- Abduction
- Supraspinatus
1 min
Upper Limb - Arm Muscles
- Anterior Superficial Muscles
- Biceps Brachii
- Anterior Deep Muscles
- Coracobrachialis
- Brachialis
- Posterior Superficial Muscles
- Long Head of Triceps Brachii
- Lateral Head of Triceps Brachii
- Posterior Deep Muscles
- Medial Head of Triceps Brachii
2 mins
Upper Limb - Anterior Forearm Muscles
- Superficial Muscles
- Pronator Teres
- Palmaris Longus
- Flexor Carpi Radialis
- Flexor Carpi Ulnaris
- Intermediate Muscles
- Flexor Digitorum Superficialis
- Deep Muscles
- Flexor Pollicis Longus
- Flexor Digitorum Profundus
- Pronator Quadratus
2 mins
Anterior Thigh Muscles
- Innervation
- Femoral Nerve
- Muscles
- Iliopsoas
- Psoas Innervated by L1-3
- Sartorius
- Pectineus
- Quadriceps Femoris
- Vastus Lateralis
- Vastus Intermedius
- Vastus Medialis
- Rectus Femoris
2 mins
Posterior Thigh Muscles
- Innervation
- Sciatic Nerve
- Muscles
- Biceps Femoris
- Long and Short Head
- Flex Knee
- Extend Hip
- Laterally Rotate Hip
- Semitendinosus and Semimembranosus
- Flex Knee
- Extend Thigh
- Medially Rotate Thigh and Leg
1 min
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