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Biomedical subjects

J Bernageau

Publications and source records attributed to J Bernageau.

14 recordsLinked to original sources

[Examination of the non-injured shoulder].

Modern imaging methods are undeniably very attractive. They should make possible an easy study of the musculotendinous rotator cuff of the shoulder joint, lesions of which are the cause of most painful or stiff shoulder syndromes. However, not all shoulder symptoms are due to rotator cuff lesions. Also, not all methods of imaging are equally suited to showing the different cuff lesions. Further, one cannot consider the treatment of a symptomatic shoulder without having an assessment of the present condition upon which to gauge the functional improvement due to the treatment. Hence clinical examination of the painful shoulder remains essential. This makes it possible (1) to exclude an extra-articular pathology, (2) to choose the method of imaging most suited to showing the suspected lesion, and finally (3) to quantify the functional state of the shoulder.

Arthrography

[Imaging of the shoulder in orthopedic pathology].

Radiological examination of an unstable shoulder relies on straight X-ray images which are better than CT scans to detect bone lesions consecutive to anterior destabilizing accidents. The indications of CT arthrography are very limited. Radiological studies of the rotator cuff must necessarily include a standard radiological examination. Contrast arthrography is used either to find out whether or not the cuff is damaged, or when the tear is thought to be small. Arthropneumotomography is useful in the preoperative assessment of severe postero-superior tears. CT arthrography is very good to explore the subscapular muscle and to detect medial dislocation of the biceps long head tendon. The first results of MRI are encouraging, and when the cost of this method is reduced it might replace arthrography.

Humans

Roentgenographic assessment of the rotator cuff.

In assessment of the rotator cuff, roentgenograms are mandatory. They permit judgment of the degree and site of bony involvement, assessment of the relationship between humeral head and glenoid, and differential diagnosis. Single-contrast arthrography is used to confirm the presence or the absence of a tear in the rotator cuff, particularly when a small tear is suspected. If the tear is large or if active lateral rotation is absent, tomoarthrography using air should be performed in the frontal and sagittal planes. If an anteromedial dislocation of the long head of the biceps or a tear of the subcapularis is suspected, computed tomoarthrography (CTA) is indicated. CTA shows the major part of the anterior cuff tendons. Computed tomography (CT) densitometry of the rotator cuff muscles, performed routinely before and after surgery, permits an objective evaluation of their functional status.

Humans

[The radiographic diagnosis of posterior dislocation of the shoulder (author's transl)].

In spite of its clinical features, the diagnosis of posterior dislocation of the shoulder is often missed. The authors considered that this is due to an inadequate analysis of the x-rays. They show that the diagnosis can be made on an antero-posterior x-ray and describe the findings in fourteen cases. They note a modification of the gleno-humera line and the features of the associated impaction fracture. A lateral view is necessary to make the diagnosis certain, an axillary view being preferred to a trans-thoracic late-femoral head or of the posterior glenoid margin.

Humans

[The measurement of the tibial tuberosity. Patella groove distanced technique and results (author's transl)].

The line between the summit of the tibial tuberosity and the bottom of the trochlea groove as seen on a radiograph taken with the knee in 30 degrees of flexion and neutral rotation is indicative of the valgus position of the quadriceps mechanism at the moment of engatement of the patella in the groove. The authors stress the technical requirements to obtain the radiograph which permits this measurement. Measurement of a group of normal knees and of two groups of knees presenting with known patello-femoral pathology (lateral patello-femoral arthrosis and current dislocation of the patella) are given. In the study of distrubance of the patello-femoral articulation, this measurement provides information of theoretical and therapeutic interest.

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