Which bone is located in the thigh region of the lower extremity?

• Tibia

• Femur

• Fibula

• Patella

What is the primary purpose of performing an anteroposterior (AP) projection of the knee?

• To visualize the lateral condyle

• To assess the joint space and alignment

• To evaluate the patella in profile

• To examine the tibial tuberosity

Which artery supplies blood to the lower extremity?

• Brachial artery

• Femoral artery

• Radial artery

• Carotid artery

Which of the following is a common complication following a lower extremity orthopedic procedure?

• Deep vein thrombosis (DVT)

• Asthma

• Myopia

• Otitis media

When positioning a patient for a lateral projection of the ankle, which of the following is correct?

• The foot should be dorsiflexed and the lateral side against the image receptor

• The foot should be plantarflexed and the medial side against the image receptor

• The patient should stand on tiptoes

• The knee should be fully extended

A patient presents with a suspected fracture of the distal tibia. Which radiographic projection would best demonstrate this injury?

• AP and lateral projections of the lower leg

• Oblique projection of the foot

• PA projection of the knee

• Tangential projection of the patella

During a total knee replacement, which anatomical structures are most likely to be replaced?

• Femoral head and acetabulum

• Femoral condyles and tibial plateau

• Patella and fibula

• Tibial tuberosity and talus

A technologist is asked to perform a tangential (sunrise) projection of the patella. What is the main reason for using this projection?

• To visualize the patellofemoral joint space

• To assess the tibial plateau

• To evaluate the femoral shaft

• To examine the ankle mortise

Which patient positioning error is most likely to result in a rotated image on an AP projection of the femur?

• The leg is externally rotated

• The knee is flexed

• The foot is dorsiflexed

• The patient is supine

A patient with a recent lower extremity surgery develops swelling, pain, and redness in the calf. What is the most likely complication, and what imaging study should be ordered?

• Deep vein thrombosis; Doppler ultrasound

• Osteoarthritis; X-ray

• Cellulitis; CT scan

• Compartment syndrome; MRI