LRA-220 Week 2 Review

Question 1

Which projection will best demonstrate signs of Osgood-Schlatter disease?

Answer 1

AP and a Lateral Knee

Question 2

How much knee flexion is required for the weight-bearing PA axial projection (Rosenberg method) of the knee?

Answer 2

45 degree

Question 3

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

Answer 3

AP Oblique with medial rotation

Question 4

Which special position of the knee requires that the patient be placed supine with 40° flexion of knee with the CR angled 30° from the long axis of the femur?

Answer 4

Bilateral Merchant Method

Question 5

Which of the following projections of the patella requires the patient to be placed in a prone position, a 55° flexion of the knee, and a 15° to 20° angle of the CR?

Answer 5

Hughston Method

Question 6

Define Osgood-Schlatter disease

Answer 6

• involves inflammation of the bone and cartilage of the anterior proximal tibia,
• the large patellar tendon detaches part of the tibial tuberosity to which it is attached
• common in boys 10 to 15 years old.

Question 7

Define Lisfranc Joint Injury

Answer 7

• range from sprains to fracture-dislocations of the bases of the first and second metatarsals.
• may be missed if weight-bearing AP and lateral foot projections are not performed.
• prone to stress injury caused by motor vehicle crashes, twisting falls, and falls from high places

Question 8

Define Gout

Answer 8

• a form of arthritis that may be hereditary
• uric acid appears in excessive quantities in the blood and may be deposited in the joints and other tissues
• common initial attacks occur in the first MTP joint of the foot.
• Most cases occur in men, and first attacks rarely occur before the age of 30.

Question 9

Define Exostosis

Answer 9

• is a benign, neoplastic bone lesion that is caused by consolidated overproduction of bone at a joint (usually the knee)
• tumor grows parallel to the bone and away from the adjacent joint.
• Tumor growth stops as soon as the epiphyseal plates close.

Question 10

Define Paget’s Disease

Answer 10

• a non-neoplastic bone disease that disrupts new bone growth, resulting in overproduction of very dense yet soft bone
• Lesions typically occur in the skull, pelvis, femurs, tibias, vertebrae, clavicles, and ribs.
• The pelvis is the most common initial site of this disease.

Question 11

Define Chondrosarcoma

Answer 11

• malignant tumors of the cartilage
• usually occur in the pelvis and long bones of men older than 45 years.

Question 12

Define Reiter’s Syndrome

Answer 12

• affects the sacroiliac joints and lower limbs of young men
• caused by a previous infection of the gastrointestinal tract, such as salmonella, or by a sexually transmitted infection