The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Low Ankle Sprain: Pathomechanics and Clinical Findings

Grading Ligament Sprains
l: Minimal ligament disruption, mild swelling & tenderness,
Clinical Findings Grading ... most commonly injured ... (uncommonly injured ... PTFL is rarely injured ... LowAnkleSprain #Sports #MSK
Myelopathy - Injury to the entire spinal cord - Signs and Symptoms
 • Ataxia (early sign)
Myelopathy - Injury ... spinal cord - Signs ... Ataxia (early sign ... weakness (late sign ... #symptoms #msk
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
spinal artery injury ... tumour causing injury ... Acute #SpinalCord #Injury ... pathophysiology #signs ... #symptoms #msk
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
subthreshold mechanical loading ... from continued loading ... StressFractures #msk ... pathophysiology #symptoms #signs
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Avulsion or shearing injury ... onto lateral hip Signs ... /Symptoms/Complications ... FemoralHead #Fractures #msk ... pathophysiology #signs
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
Clinical Features and Complications ... possible vascular injury ... - Type 1 or 2 injury ... Classification #Grades #Grading ... #Orthopedics #MSK
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Clinical Features and Complications ... Typically "inside out" injury ... Fractures #Diagnosis #Complications ... #MSK #Orthopedics
Disc Herniations - Pathogenesis and Complications
• 90% of Lumbar disc herniations happen at L4/5 and L5/S1
•
Pathogenesis and Complications ... -> Mechanical loading ... DiscHerniations #complications ... #msk #pathophysiology
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 ... pathophysiology #diagnosis #signs ... #symptoms #complications
Patellofemoral Syndrome - Pathogenesis and clinical findings
 • Anterior Knee Pain with possible symptoms of 'catching'
pain • Palpable grinding ... pathophysiology #diagnosis #signs ... #symptoms #msk