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 ... => Fracture propagation ... loading Stress Fracture ... StressFractures #msk #orthopedics
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
of Pelvic Ring Fractures ... Sacral compression fracture ... Grade 2 - Rami fracture ... posterior ilium fracture ... Grades #Grading #Orthopedics
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Open Fractures: ... Mechanisms, Clinical Features ... Classification #Open #Fractures ... 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 ... Atypical femur fracture ... Subtrochanteric #Femur #Fractures ... #msk #orthopedics
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Femoral Head Fracture ... • Non-union of fracture ... #FemoralHead #Fractures ... signs #symptoms #orthopedics
Clavicular Fracture: Pathogenesis and clinical findings

Group I (69%) - Middle third (mid-shaft)
Group II (29%) - Distal
Clavicular Fracture ... and the site of fracture ... with clavicle fractures ... #Clavicular #Fracture
Osteoarthritis (OA): X-ray features 
 - Joint space narrowing (least specific)
 - Subchondral Cysts (pockets of
Osteoarthritis (OA): X-ray features ... Osteoarthritis #OA #Xray #radiology
Rheumatoid arthritis (RA): X-ray features
 • Soft tissue swelling (best seen by comparing left & right
arthritis (RA): X-ray features ... HandXray #Diagnosis #Radiology
Acute Compartment Syndrome
 • Crush injuries, burns, circumferential constriction to limbs (each containing facially divided muscle
bleeding tendency/fracture ... pathophysiology #orthopedics
Necrotizing Fasciitis: Pathogenesis and Clinical Findings

#NecrotizingFasciitis #pathophysiology #orthopedics
pathophysiology #orthopedics