2 - Aldridge - Lower Limb Radiology Flashcards
Routine views of hip for x-ray?
Anterior Posterior (AP)
Lateral/Frog View
Shenton’s Line
What does loss indicate?
Normal arch formed by:
Superior Pubic Ramus and Femoral Neck
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Loss = sign of fractured neck of femur
Posterior Hip Dislocation
Radiographic Presentation?
90% of all hip dislocations
High energy trauma to anterior
May compromise sciatic nerve
Femoral Head Lateral and Superior
Femur in Internal Rotation and Adduction
Head may appear Smaller
What structure of the femur would not be visible during Posterior Hip Dislocations?
Lesser Trochanter
Anterior Hip Dislocation
Radiographic Features?
Femoral Head Medial and Inferior
Femur in External Rotation and Abduction
Head may appear Larger
What are some signs of Osteoarthritis?
Join space narrowing
Osteophyte formation
Subchondral cysts
What appears dark between the Quadriceps Femoris Tendon and the femur?
Fat pads
What view is good for evaluating the patella?
What will swelling appear as?
Lateral view
Increased white
Bipartite Patella
Patella with unfused accessory ossification center
Upper Lateral, Smooth Edges
Fabella
Sesamoid Bone present in tendon of origin of lateral head of gastrocnemius
Often mistaken for a fracture
Injury?
Tibial Stress Fracture
What view allows no overlapping of ankle?
Mortise View
15-20 deg internal rotation
Most commonly injured weight bearing joint in the body?
Ankle
Soft tissue swelling of ankle on the lateral side
Most inferior of the tarsals?
Cuboid
Stress fracture of foot
March Fracture
May initially appear normal in 85% of cases
Apophysis of the 5th Metatarsal
Longitidinally/parallel to the shaft
12 for boys, 10 for girls–fuses 2-4 years later
Often confused with an avulsion fracture
Avulsion Fracture of 5th Metatarsal
Pull from the lateral band of the plantar fascia and or peroneus brevis
Transverse / Slightly Oblique
