The Calgary Guide to Understanding Disease @TheCalgaryGuide
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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 ... #orthopedics #pathophysiology
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
possible vascular injury ... - Type 1 or 2 injury ... Grades #Grading #Orthopedics ... #MSK #diagnosis ... complications #pathophysiology
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Femoral Head Fracture ... Avulsion or shearing injury ... #msk #diagnosis ... #pathophysiology ... signs #symptoms #orthopedics
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Open Fractures: ... Typically "inside out" injury ... Classification #Open #Fractures ... #Diagnosis #Complications ... #MSK #Orthopedics
Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
Subtrochanteric Femur Fracture ... low energy fall fractures ... #msk #orthopedics ... #diagnosis #differential ... #causes #pathophysiology
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
spinal artery injury ... #Syndromes #diagnosis ... #pathophysiology ... signs #symptoms #msk ... #orthopedics #neurology
Low Ankle Sprain: Pathomechanics and Clinical Findings

Grading Ligament Sprains
l: Minimal ligament disruption, mild swelling & tenderness,
(uncommonly injured ... LowAnkleSprain #Sports ... #MSK #orthopedics ... Grading #Grades #Diagnosis ... #pathophysiology
Clavicular Fracture: Pathogenesis and clinical findings

Group I (69%) - Middle third (mid-shaft)
Group II (29%) - Distal
Clavicular Fracture ... the mechanism of injury ... and the site of fracture ... #Grading #Diagnosis ... #pathophysiology
Acute Compartment Syndrome
 • Crush injuries, burns, circumferential constriction to limbs (each containing facially divided muscle
bleeding tendency/fracture ... pressure #Acute #CompartmentSyndrome ... #ACS #pathophysiology ... #orthopedics
RICE: Mechanism of Action
Rest (weight bearing or stressful motion discontinued)
Ice (applied to injury)
Compression (wrap applied to
Ice (applied to injury ... wrap applied to injured ... heart) #RICE #Sports ... #pathophysiology ... #mechanism #MSK