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) -
of Pelvic Ring Fractures ... possible vascular injury ... - Type 1 or 2 injury ... #Orthopedics #MSK ... complications #pathophysiology
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Femoral Head Fracture ... Avulsion or shearing injury ... • Non-union of fracture ... #msk #diagnosis ... #pathophysiology
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Open Fractures: ... Mechanisms, Clinical Features ... Typically "inside out" injury ... Classification #Open #Fractures ... Complications #MSK
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
spinal artery injury ... function below injury ... below level of injury ... Syndromes #diagnosis #pathophysiology ... signs #symptoms #msk
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 ... #Clavicular #Fracture ... Grading #Diagnosis #pathophysiology
Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
Subtrochanteric Femur Fracture ... low energy fall fractures ... Atypical femur fracture ... #msk #orthopedics ... differential #causes #pathophysiology
Carpal Tunnel Syndrome: Pathogenesis and clinical findings
 • Dysthesias - Tingling, burning, or painful sensation at
CarpalTunnel #Syndrome #pathophysiology ... #msk #overuse
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
interarticularis stress fracture ... Spondylolisthesis #MSK ... #diagnosis #pathophysiology
Low Ankle Sprain: Pathomechanics and Clinical Findings

Grading Ligament Sprains
l: Minimal ligament disruption, mild swelling & tenderness,
most commonly injured ... (uncommonly injured ... PTFL is rarely injured ... LowAnkleSprain #Sports #MSK ... Grades #Diagnosis #pathophysiology