The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
Sacral compression fracture ... bilateral rami fractures ... 2 - Rami fracture ... posterior ilium fracture ... #Orthopedics #MSK
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
Stress Fracture: ... => Microscopic fractures ... loading Stress Fracture ... StressFractures #msk ... pathophysiology #symptoms #signs
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Femoral Head Fracture ... onto lateral hip Signs ... • Non-union of fracture ... #msk #diagnosis ... pathophysiology #signs
Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
Subtrochanteric Femur Fracture ... low energy fall fractures ... in elderly Causes ... #msk #orthopedics ... #differential #causes
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
interarticularis stress fracture ... XR — scotty dog sign ... Spondylolisthesis #MSK ... pathophysiology #signs
Prader-Willi Syndrome: Pathogenesis and clinical findings
 • Maternal uniparental disomy: inheriting 2 copies of maternal chromosome
Prader-Willi Syndrome ... hypothalamus =>Prader-Willi ... Syndrome Signs ... Incr Skeletal fractures
Acute Otitis Media: Complications
Infection and inflammation of the middle ear
 - Prolonged obstruction of e. tube
Acute Otitis Media ... becomes more severe Signs ... abscess • High grade ... Balance Problems #Acute ... pathophysiology #symptoms #signs
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
Greater Trochanter Fracture ... pathophysiology #causes ... #symptoms #signs ... #diagnosis #msk
Achilles Tendon Rupture - Pathogenesis and clinical findings
 • The Achilles tendon is 15cm long in
warriors") • Acute ... pre-determined etiology Signs ... TendonRupture #diagnosis #signs ... pathophysiology #msk
Systemic Lupus Erythematosus (SLE): Musculoskeletal Manifestations

 • Immune Complex Deposition
    - Arthralgia, Arthritis
Myopathy (Also caused ... Erythematosus #SLE #MSK ... pathophysiology #signs