The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
Anterior Shoulder ... joint capsule => Anterior ... • Humeral head anterior ... signs #symptoms #msk ... #orthopedics #pathophysiology
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
femoral head onto anterior ... • Avulsion or shearing ... FemoralHead #Fractures #msk ... #diagnosis #pathophysiology ... signs #symptoms #orthopedics
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
Ring Fractures: Mechanisms ... Complications • Anterior ... Grades #Grading #Orthopedics ... #MSK #diagnosis ... complications #pathophysiology
Low Ankle Sprain: Pathomechanics and Clinical Findings

Grading Ligament Sprains
l: Minimal ligament disruption, mild swelling & tenderness,
ligament substance leading ... ligament substance leading ... LowAnkleSprain #Sports #MSK ... #orthopedics #Grading ... Grades #Diagnosis #pathophysiology
Menstrual Cycle Physiology: Ovarian Cycle – Follicular Phase Explained
Early Follicular Phase (Days 0-5)
 • Granulosa cells
feeding back on anterior ... of androgens (leading ... effect on the anterior ... #MenstrualCycle ... #OvarianCycle #pathophysiology
RICE: Mechanism of Action
Rest (weight bearing or stressful motion discontinued)
Ice (applied to injury)
Compression (wrap applied to
RICE: Mechanism ... Rest (weight bearing ... #RICE #Sports #pathophysiology ... #mechanism #MSK
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
clinical findings • Anterior ... Cord Syndrome -> Anterior ... Syndromes #diagnosis #pathophysiology ... signs #symptoms #msk ... #orthopedics #neurology
Menstrual Cycle Physiology: Correlating the Ovarian and Uterine Cycles
Note: Some charts show different relative levels of
puberty (unclear mechanisms ... feed back on the anterior ... #UterineCycle #MenstrualCycle ... #OvarianCycle #pathophysiology
Isolated Anterior Cruciate Ligament (ACL) Injury: Pathogenesis and clinical findings
 • Feeling a "pop"
 • Acute
Isolated Anterior ... clinical findings • Feeling ... Shift test + Anterior ... #ACL #Injury #MSK ... #Sports #pathophysiology
Fracture Healing (and disruptors of this process)
Inflammatory Stage (0-7d)
 • Fracture disrupts local blood vessels ->
Fracture Healing ... time, mechanisms ... #Stages #Orthopedics ... #msk #Staging # ... pathophysiology