Other than conventional radiography of synovial joints (e.g., arthrography), which imaging procedure is
preferred by physicians for studying synovial joints? - Correct Answers MRI or CT
List the three common forms of knee injury that may require arthrography: - Correct Answers 1. Tears
of the joint capsule
2. Tears of the menisci
3. Tears of ligaments
Give an example of nontraumatic pathology of the knee joint indicating arthrography. - Correct Answers
Baker's cyst
What are the two primary contraindications for arthrography of any joint? - Correct Answers Allergic
reactions to iodine-based contrast media and local anesthetics
True/False: An arthrogram must be approached as a sterile procedure. Proper skin prep and sterility
must be maintained. - Correct Answers True
True/False: After the contrast medium is introduced into the knee joint, the knee must not be flexed or
exercised. - Correct Answers False; needs to be flexed to distribute contrast media
What is the normal appearance of synovial fluid? - Correct Answers Clear and tinged yellow
List the two types of contrast media used for a knee arthrogram: - Correct Answers 1. Positive or
radiopaque media such as iodinated, water-soluble contrast agent
2. Negative or radiolucent contrast agents, such as room air, oxygen, or carbon dioxide
, List the two routine projections for conventional radiographic projections used for knee arthrography: -
Correct Answers 1. AP
2. Lateral
On average, how many exposure are taken of each meniscus during fluoroscopy of the knee? - Correct
Answers Nine images per meniscus
How many degrees of rotation of the leg are used between exposures? - Correct Answers 20 degrees
What four aspects of shoulder anatomy are demonstrated with shoulder arthrography? - Correct
Answers 1. Joint capsule
2. Rotator cuff
3. Long tendon of biceps
4. Articular cartilage
What is the general name for the conjoined tendons of the four major shoulder muscles? - Correct
Answers Rotator cuff
What type of needle is commonly used for shoulder arthrograms? - Correct Answers 2 3/4-3 1/2" spinal
needle
List three clinical indications for a shoulder arthrogram: - Correct Answers 1. Chronic pain
2. General weakness
3. Suspected tear in the rotator cuff
List the six projections frequently taken during a shoulder arthrogram: - Correct Answers 1. AP Scout
2. AP internal rotation
3. AP external rotation
4. Glenoid fossa (Grashey) projection
5. Transaxillary (inferosuperior axial) projection