Exam 6: Lower Limb

A correctly positioned AP 45° medial oblique ankle projection frequently may also demonstrate a fracture of the base of the fifth metatarsal if present.

Extending the ankle joint or pointing the foot and toes downward is called:

A radiograph of a PA axial projection for the intercondylar fossa (Camp-Coventry method) does not demonstrate the fossa well.It is foreshortened.The following positioning factors were used: patient prone, knee flexed 40° to 45°, CR angled to be perpendicular to the femur, 40-inch SID, and no rotation of the lower limb.Based on the factors used, what changes need to be made to produce a more diagnostic image?

A radiograph of an AP oblique foot with medial rotation demonstrates considerable superimposition of the third through fifth metatarsals.How must the original position be changed to eliminate this problem?

A radiograph of a plantodorsal (axial) projection of the calcaneus reveals foreshortening.The technologist used 60 kV, 6 mAs, 40-inch (102-cm) SID, and a 25° cephalad CR angle from the long axis of the foot.Which of the following modifications will produce a more diagnostic image of the calcaneus?

A radiograph of a mediolateral projection of the patella reveals that the femoropatellar joint space is not open.The patella is within the intercondylar sulcus.The most likely cause of this is:

The adductor tubercle is located on the posterior aspect of the medial femoral condyle.

To decrease the angle between the anterior surface of the foot and anterior surface of the lower leg is described as:

Which projection of the knee will best demonstrate the neck of the fibula without superimposition of the tibia?

Match the correct disease or condition with the corresponding pathologic description.(Use each choice only once.) -Also known as osteitis deformans, a bone disease that disrupts new bone growth, resulting in overproduction of very dense yet soft bone

Match the correct disease or condition with the corresponding pathologic description.(Use each choice only once.) -Inherited type of arthritis commonly affecting males; frequently begins at first metatarsophalangeal joint

A patient comes to radiology with a history of chondromalacia of the patella.The orthopedic surgeon is concerned about possible loose bodies within the patellofemoral joint space.She wants the best projection to demonstrate this joint space.What projection should be performed?

Match the correct disease or condition with the corresponding pathologic description.(Use each choice only once.) -Benign, neoplastic bone lesion filled with clear fluid

Another term for the intercondylar sulcus is the:

Match the correct disease or condition with the corresponding pathologic description.(Use each choice only once.) -An inflammatory condition involving the anterior, proximal tibia

Which term describes the top or anterior surface of the foot?

Which of the following projections of the ankle will best demonstrate the open joint space of the lateral aspect of the ankle joint?

Which one of the labeled structures is the medial condyle of the femur?

What is one advantage of the lateromedial projection of the foot?

The distal tibiofibular joint is classified as a ____ joint.