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PubMed1980

Pseudomasses in the suprapatellar pouch at arthrography.

An arthrographic appearance, confidently diagnosed as synovial chrondromatosis, showed no abnormality at surgery. This experience prompted further investigation which led to the conclusion that a normal variant of the suprapatellar pouch may be confused with synovial masses. Single or multiple pseudomasses in this region may relate to the presence of an embryonic remnant of the synovial folds, the plicae synovialis. If the finding is looked for, with careful arthrographic technique and palpation under fluoroscopic control, along with correlation with the clinical findings, unnecessary arthrotomy may be avoided.

Adolescent↗
PubMed1977

An aid to knee arthrography.

Towels, intravenous pyelogram compression device, and fluoroscopy with phototimed, small focal spot-filming allow for simple, virtually foolproof knee arthrograms in real time.

Fluoroscopy↗
PubMed1977

Gamekeeper's thumb. Evaluation by arthrography and stress roentgenography.

We reviewed 197 previously reported cases of acute rupture of the ulnar collateral ligament of the metacarpophalangeal joint with respect to anatomy, diagnosis, surgical findings, and management. A standardized roentgenographic technique in stress abduction of the thumb was developed from thirty normal patients. The correlation between the abduction arc as recorded by our technique, the arthogram, and surgical pathology in twenty patients is reported.

Female↗
PubMed1992

[MR imaging of rotator cuff tears].

A total of 115 patients with clinical symptoms and signs suggesting rotator cuff tears underwent MR imaging with a 1.5-Tesla system. The body coil was used as the receiver coil in 24 patients and a single 10 cm surface coil in 91. Arthrography or MR imaging with intra-articular Gd-DTPA (MR arthrography) was performed in 95 of the 115. T2-weighted images with the body coil showed high signal intensity lesions in rotator cuffs in only seven of the 10 patients who had tears demonstrated by arthrography or MR arthrography. On the other hand, T2-weighted images with the surface coil demonstrated high signal intensity lesions in cuffs in all 27 patients who were diagnosed to have tears by arthrography or MR arthrography. In 12 patients, T2-weighted images with the surface coil showed high signal intensity lesions in cuffs, while arthrography and MR arthrography did not show tears. Surgery was performed in four of the 12 patients and partial tears were confirmed. A single 10 cm surface coil, 3 mm slice thickness and 2.5 second repetition time seem to account for the fine visualization of cuff tears by the T2-weighted images. These results suggest that T2-weighted images obtained with the surface coil are superior to arthrography and MR arthrography.

Adult↗
PubMed1994

MR arthrographic depiction of tears of the rotator cuff: benefit of abduction and external rotation of the arm.

PURPOSE: To show the effectiveness of positioning the arm in abduction and external rotation (ABER) during magnetic resonance (MR) arthrography for depiction of tears of the rotator cuff. MATERIALS AND METHODS: Five throwing athletes with shoulder pain were prospectively imaged with standard MR imaging, MR arthrography, and ABER MR arthrography. The status of the rotator cuff was recorded; arthroscopic correlation was obtained. RESULTS: One partial tear of the distal infraspinatus tendon was detected with ABER MR arthrography only. One full-thickness tear was detected with both MR arthrography and ABER MR arthrography, but the component of the tear that extended into the infraspinatus tendon was depicted with ABER MR arthrography only. One partial tear was detected with both MR arthrography and ABER MR arthrography; no additional information was provided by either technique alone. CONCLUSION: The ABER position may be useful in detection and characterization of tears of the rotator cuff, especially partial tears of the undersurface. This information would be useful in selection of patients for conservative therapy, arthroscopy, or arthrotomy.

Adult↗
PubMed1996

Evidence-based evaluation of three imaging methods for the temporomandibular disc.

OBJECTIVES: To review the literature and evaluate the evidence for the diagnostic outcome of arthrography, computed tomography (CT) and magnetic resonance imaging (MRI) in the assessment of temporomandibular joint (TMJ) disc position. METHODS: A literature search from 1978 to 1994 was conducted. Data on sensitivity, specificity, predictive values and likelihood ratios were collected and, if not available, calculated for each imaging method. Measures of observer performance were also recorded. RESULTS: In total, more than 400 publications were retrieved on imaging of TMJ disc position, 219 on arthrography, 99 on CT and 147 on MRI, with a marked decrease in recent years. The majority of the publications (54%) presented series of patients. The diagnostic outcome cold be obtained from only 7% of the studies and the observer performance from only two of these. Arthrography had the highest diagnostic outcome for the diagnosis of anterior disc position; sensitivity 0.90, specificity 0.80, positive predictive value 0.88 and negative predictive value 0.82. Corresponding figures for CT were 0.66, 0.68, 0.66 and 0.74 and for MRI 0.86, 0.63, 0.67 and 0.83. The diagnostic outcomes expressed as the likelihood ratios for positive test outcome were 4.5 for arthrography, 2.3 for MRI and 2.1 for CT. The outcomes in diagnosing sideways and rotational displacements were higher for MRI (sensitivity 0.81, specificity 0.87, positive predictive value 0.82, negative predictive value 0.88) than for arthrography (0.64, 0.83, 0.70, 0.79). The likelihood ratios were 6.2 for MRI and 3.8 for arthrography. The interobserver performance ranged between moderate to substantial for arthrography and was almost perfect for MRI. CONCLUSIONS: Based on current evidence on the diagnostic outcome, MRI seems to be the method of choice for diagnosing TMJ disc position. Arthrography has a higher diagnostic outcome for anterior disc position but the disadvantage of being an invasive method. We suggest that the quality of the evidence should be improved and that an analysis of the impact of the imaging methods on patient treatment should be performed.

Arthrography↗