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Arthrograms
Knee and Shoulders
Question | Answer |
---|---|
Purpose? (Knee) | To demonstrate and evaluate knee joint and associated structures. |
Structures of Interest? (Knee) | - Joint Capsule - Menisci - Collateral Cruciate Ligaments |
Clinical Indications? (Knee) | - Suspected tears of the joint capsule, menisci, and/or ligaments - Most injuries are results from trauma - A non-traumatic pathology is a baker cyst |
What is a Bakers cyst? (Knee) | Swelling behind the knee composed of a membrane lined sac of synovial fluid. |
Contraindications? (Knee) | Allergies to contrast media and/or local anesthetics |
What is being imaged and rotation between the images? (Knee) | - Views of meniscus - Leg is rotated 20 degrees between exposures |
Purpose? (Shoulder) | Demonstrates: - Joint Capsule - Rotator Cuff - Long tendons of the biceps - Articular cartilage |
Clinical Indications? (Shoulder) | - Cronic pain or generalized weakness in shoulder joint - Suspected rotator cuff tear |
What is the Rotator Cuff? | Group of 4 muscles and their tendons that wrap around the front, back, and top of shoulder |
Muscles that make up the rotator cuff? | - Supraspinatus - Infraspinatus - Teres minor - Subscapularis |
Needle used for shoulder arthrograms? | 2 1/4 - 3 1/2 inch spinal needle |