The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
Fracture: Pathogenesis ... low energy fall fractures ... fracture -> Bisphosphonate ... #Fractures #msk ... #orthopedics #diagnosis
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
Stress Fracture: ... => Microscopic fractures ... => Fracture propagation ... loading Stress Fracture ... pathophysiology #symptoms
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Femoral Head Fracture ... • Non-union of fracture ... #FemoralHead #Fractures ... #msk #diagnosis ... #orthopedics
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
of Pelvic Ring Fractures ... bilateral rami fractures ... posterior ilium fracture ... Grades #Grading #Orthopedics ... #MSK #diagnosis
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Open Fractures: ... Mechanisms, Clinical Features ... Classification #Open #Fractures ... #Diagnosis #Complications ... #MSK #Orthopedics
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
interarticularis stress fracture ... Spondylolisthesis #MSK #diagnosis ... pathophysiology #signs #symptoms
Periorbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Dacryoadenitis: infection of the lacrimal glands
b. Conjunctivitis: inflammation of the
Periorbital Cellulitis ... #Periorbital #Cellulitis ... pathophysiology #ophthalmology ... #diagnosis #signs ... #symptoms
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
Orbital Cellulitis ... Blindness #Orbital #Cellulitis ... pathophysiology #ophthalmology ... #diagnosis #signs ... #symptoms
Paget’s Disease: Pathogenesis and Clinical Findings

 • Incr serum CTx - marker of bone resorption
 •
bodies, tibia, femur ... , kyphosis and fractures ... pathophysiology #diagnosis ... #signs #symptoms
Ankylosing Spondylitis: Pathogenesis and Clinical findings
 • Pain in lumbar area and gluteal region: (Dull, insidious
bamboo spine) -> Fracture ... pathophysiology #diagnosis ... #signs #symptoms