The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
Findings Compression/injury ... MeralgiaParesthetica #MSK ... pathophysiology #differential
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
spinal artery injury ... below level of injury ... spinal artery injury ... below level of injury ... signs #symptoms #msk
Myelopathy - Injury to the entire spinal cord - Signs and Symptoms
 • Ataxia (early sign)
Myelopathy - Injury ... signs #symptoms #msk
Low Ankle Sprain: Pathomechanics and Clinical Findings

Grading Ligament Sprains
l: Minimal ligament disruption, mild swelling & tenderness,
most commonly injured ... the CFL is also injured ... (uncommonly injured ... PTFL is rarely injured ... LowAnkleSprain #Sports #MSK
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Typically "inside out" injury ... Complications #MSK
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Avulsion or shearing injury ... FemoralHead #Fractures #msk
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
possible vascular injury ... - Type 1 or 2 injury ... #Orthopedics #MSK
Spondylosis - Pathogenesis and Complications

Vertebral disease that may compress the vertebral canal from all sides
Note: Do
pathophysiology #msk
Acute Rheumatic Fever: Pathogenesis and Clinical Findings

Delayed autoimmune reaction
-> Molecular mimicry
-> GAS antigen cross-reacts with host
->
cells -> Tissue injury ... Pancarditis and valvular injury
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
StressFractures #msk