INJURIES
IN SPORTSMR
ARTHROGRAPHY TECHNIQUE AND
CLINICAL INDICATIONS
Bolog
N1,
Mangrau Angelica1, Oancea Irinel 1,
Banicescu Antonia 1, Andreisek G2
1 Phoenix Diagnostic Clinic,
Bucharest, Romania, 2 University Hospital Zurich,
Switzerland
Direct magnetic resonance (MR)
arthrography consists of direct injection of diluted gadolinium in the
joints. The technique is used mostly for evaluating certain pathologic
conditions of the shoulder and hip. During the MR arthrography of the
shoulder, the joint is in a neutral position and is punctured with a
21-gauge spinal needle under fluoroscopic guidance. Approximately 1-2
mL of contrast medium is injected under fluoroscopic guidance for
confirmation of the intraarticular location of the needle tip and is
followed by slow injection of 15-20 mL of diluted MR contrast medium.
MR arthroagraphy of the shoulder is indicated in patients with
suspected labral tears, shoulder instability, loose bodies.
Practically, at this moment more than 90% of the shoulder MR
examinations in clinical practice are performed with this technique.
For MR arthrography of the hip a direct anterior or anterolateral
approach to the hip is used. A small amount of iodinated contrast
material is injected to document intraarticular needle position. Once
the intraarticular position is fluoroscopically confirmed, 8-15 mL of
dilute solution of gadopentetate dimeglumine is injected. MR
arthrography may depict intraarticular loose bodies, osteochondral
abnormalities, and abnormalities of the supporting soft-tissue
structures.
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