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Biomedical subjects

A Chevrot

Publications and source records attributed to A Chevrot.

At least 19 recordsLinked to original sources
PubMed1992

[Sub-acromio-deltoid bursography].

Subacromio-deltoid bursography may be diagnostic and/or therapeutic. As a diagnostic procedure, it opacifies the bursa, which may be more or less fused. It visualises the superior surface of the cuff, which may be fissured and it demonstrates exaggerated impression of the acromio-coracoid ligament. It is only indicated when arthrography of the shoulder is normal. As a therapeutic procedure, it constitutes a more sensitive test than Neer's test. When it is negative, the diagnosis of anterior conflict is doubtful. The addition of a corticosteroid prolongs the therapeutic effect and facilitates rehabilitation.

Acromioclavicular Joint↗
PubMed1992

[X-ray guided puncture-aspiration of refractory calcifications of the shoulder].

Calcifying periarthritis of the shoulder may have either an acute or a chronic course. In both cases, direct puncture of the calcification shortens the natural history and facilitates and accelerates resorption in 50% of cases. The addition of a small amount of corticosteroid relieves the painful syndrome, with 80% good and very good results. The use of low doses of corticosteroid is particularly important in diabetics, patients with peptic ulcer and sportsmen. The puncture technique and the necessary precautions are described.

Adrenal Cortex Hormones↗
PubMed1992

Imaging of degenerative disk diseases.

This review provides a new understanding of the areas of disk anatomy, degeneration, herniation, and lumbar canal stenosis. It discusses new findings on calcified disks, disk imaging, intraspinal synovial cysts and even intraspinal pigmented villonodular synovitis. Special attention has been given to percutaneous therapeutic procedures and the postoperative spine.

Discitis↗
PubMed1992

Magnetic resonance imaging assessment of sacroiliac joint involvement in Gaucher's disease.

A young woman with Gaucher's disease experienced acute pain in her right sacroiliac (SI) joint. Although pelvic radiographs and computed tomographic scan showed no significant change in the right SI joint, magnetic resonance imaging demonstrated an area of high signal intensity in the iliac part of the right SI joint, and a periosseous collection of blood. This skeletal location is rarely reported in Gaucher's disease; the mechanism of bone crisis is still controversial and our case suggests the occurrence of a bone infarct.

Adult↗
PubMed1991

[Radiologic anatomy of the wrist].

Wrist imaging still relies first on plain X-Ray films, MRI allows excellent appreciation of the sculture of bones, ligaments, tendons and even nerves. C.T. is essentially useful in traumatology, while Wrist arthrography can be useful for detection of small ligament lesions.

Humans↗
PubMed1991

[A criterion of validity of the x-ray computed tomographic measurement of femoral neck anteversion].

A wrong patient's position on the CT scan table may lead to mistakes in the measurement of femoral neck anteversion. We present an experimental demonstration using a wood manufactured femur model. If the slices are performed with flexion of the thigh, the measurement is lower than the true value. Thus, to check the measurement on the picture of added slices, it is necessary to have a superimposition of the pictures of the upper part and the lower part of the femur. Otherwise, the measure is wrong and the mistake depends of the direction of the shifting: --if the lower part of the femur is higher, the anteversion measure is lower than expected. --if the lower part of the femur is lower, the anteversion measure is higher.

Femur Neck↗
PubMed1990

[Anulography].

Despite new imaging modalities such as MRI, the discography remains useful, particularly as the first step of chemonucleolysis. The anulography corresponds to a technical error due to the wrong position of the needle during the procedure. We have noticed 32 anulographies on 1226 discographies done in our department, between 1985 and 1989. The anulography exhibits a typical pattern that must be diagnosed; if not, that can lead to a diagnosis mistake or a wrong therapeutic attitude. The needle of discography must then be repositioned.

Adult↗
PubMed1990

[Coxarthrosis].

Explore the source record for details and available documents.

Humans↗
PubMed1989

[Sciatica caused by a posterior articular cyst. Apropos of 8 cases].

The authors report 8 cases of sciatica secondary to a posterior articular cyst. They emphasize the clinical manifestations permitting to suspect this etiology of root compression, which, until now, was rather unusual. Computerized axial tomography makes the diagnosis possible along with posterior arthrography. This arthrography represents the first stage of the medical treatment by posterior joint infiltration of a steroid derivative. In 60 p. cent of the cases, a definite and persisting improvement permits to avoid a surgical procedure.

Aged↗
PubMed1989

[Value of tomodensitometry sagittal reconstruction in aseptic osteonecrosis of the hip].

CT scan sagittal reconstructions allow accurate angular measurements of the extent of the avascular necrosis of the hip, that is necessary to consider in view of an osteotomy of rotation Sugioka type. This method is performed on a supine patient with internal rotated and extended lower limbs, using 5 mm slices from the acetabular roof to the distal part of the femoral neck. A sagittal reconstruction through the middle of the femoral head is then performed, owing a direct measurement of the extent of the necrosis and of the theoretical rotation to be used in order to keep it out of the carrying zone. Twenty hips have been studied by this method which can be used post-operatively with satisfying results. It replaces the more radiating conventional tomographies. The protonic image of MRI will perhaps substitute it, but CT gives a "calcium" image probably more accurate for the analysis of the carrying zones.

Femur Head Necrosis↗
PubMed1988

Infection versus tumor in the spine: criteria for distinction with CT.

To develop criteria to distinguish among pyogenic infection, nonpyogenic infection, and neoplastic processes in the spine by means of computed tomography (CT), the authors retrospectively analyzed 17 cases of pyogenic infection (20 sites), 40 cases of neoplastic disease (56 sites), and five cases of granulomatous infection (eight sites). Reliable criteria for pyogenic infection were complete prevertebral soft-tissue involvement, diffuse osteolytic destruction, gas within both bone and soft tissue, and a process centering on an intervertebral disk. Neoplastic disease was characterized by posterior element involvement, partial or absent prevertebral soft-tissue swelling, and osteoblastic alterations. In a limited number of cases, nonpyogenic infection was characterized by focal lytic bone involvement and marginal sclerosis. Blinded testing of these criteria indicated potential for improved diagnostic accuracy in clinical practice.

Humans↗
PubMed1988

[Long-term results of chymopapain nucleolysis].

The retrospective study of the first 67 patients treated by chemonucleolysis, since December 1980, shows a good overall result, in 69 p. cent of the cases (40 patients) and a failure in 31 p. cent of the cases (18 patients), with a 42 months follow-up. The radiculalgia is cured or quite improved in one month in 90 p. cent of the cases and in 2 years in 88 p. cent. Lumbalgia is absent or moderate after 1 month in 58 p. cent of the cases and after 2 years in 81 p. cent. It persists, most of the time, in women, and this is statistically significant. 15 immediate failures and 3 recurrent sciaticas at the same level are noticed after a 22 months free interval. The possibility of severe complications requires a perfect technique and well-defined indications. The study confirms the good results of nucleolysis with a 42 months follow-up.

Adult↗