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Biomedical subjects

R G Dussault

Publications and source records attributed to R G Dussault.

At least 55 records · Page 3Linked to original sources
PubMed1992

[Adhesive capsulitis of the shoulder: a comparative study of arthrography with intra-articular corticotherapy and with or without capsular distension].

A double-blind, prospective study of 45 patients with adhesive capsulitis of the shoulder compared the therapeutic efficacy of distensive and nondistensive arthrography in combination with the intra-articular injection of corticosteroids. After 1 and 3 months there was no significant difference between the two treatments in the degree of pain or of limitation of movement experienced by the patients. More than 80% of the patients who experienced pain at rest and nocturnal pain improved under both treatment regimens. Scapulohumeral mobility increased significantly but only partially within the first month of treatment. Articular capacity and the duration of symptoms before treatment were of no prognostic value.

Adrenal Cortex Hormones↗
PubMed1991

Plain-film diagnosis of joint disease.

The authors describe a systematic approach to plain-film diagnosis of joint disease. The major radiologic criteria--soft-tissue swelling, joint-space narrowing, bone erosion, bone sclerosis and osteophytosis, and chondrocalcinosis--are considered first. Assessing the involvement of the minor criteria of joint disease--soft-tissue atrophy or calcification, malalignment, osteoporosis, abnormal growth, intra-articular bony ankylosis, bone fragmentation, periostitis, subperiosteal resorption or acro-osteolysis--narrows the probabilities to the more likely diagnoses. Further analysis includes the distribution of joint injury, whether mono- or polyarticular, symmetrical or asymmetrical. Added to clinical information, this approach leads to a specific or refined differential diagnosis.

Cartilage, Articular↗
PubMed1990

Imaging of the facet joints.

Facet joints have a variable anatomic orientation, and their imaging must be adapted to this variation. They have an important role in the stability and mobility of the spine at all levels. They are the sites of microtrauma leading to degenerative changes. Trauma may cause subluxation, dislocation, and fracture. As synovial joints, they manifest inflammatory processes and can present as part of a systemic disease. The facet joints are a component of a trijoint complex at each motion segment and cannot be separated biomechanically. Their visualization and analysis must be integrated with the adjoining soft tissue, and with neural and bone components.

Diagnostic Imaging↗
PubMed1989

[Distention arthrography in the treatment of adhesive capsulitis of the shoulder].

Adhesive capsulitis of the shoulder is an idiopathic condition characterized clinically by pain and limitation of movement. The characteristic arthrographic features are those of limited capacity of the joint, pain during injection, and retracted recesses. Progressive distension of the capsule with 1% lidocaine and 40 mg of triamcinolone acetonide (Kenalog) is a recommended form of treatment for this condition. Twenty-five patients treated by this method were reviewed retrospectively. Eleven (44%) were completely relieved of their symptoms, 6 (24%) had a 50% improvement, and 8 (32%) had no relief. Patients with idiopathic adhesive capsulitis responded more favorably to the treatment than those with a traumatic etiology. The duration of symptoms had no correlation with the results of therapy. There were no complications from the treatment.

Adult↗
PubMed1988

Clinical evaluation of cervical facet joint infiltration.

Twenty-one patients with cervical facet syndrome underwent 39 facet joint infiltrations with corticosteroids using fluoroscopic guidance. There were 22 intra-articular and 17 peri-articular injections. This treatment relieved symptoms in 91% of patients. Follow-up ranged from one week to 12 months. However, symptoms usually recurred, specifically in 71% of patients with complete responses and in 42% of those with partial relief. There was no significant difference in response between patients receiving intra-articular or peri-articular injections (chi 2 = 2.283).

Adult↗
PubMed1988

[Stress fractures of the femoral neck].

Four young patients who developed a fatigue fracture of the femoral neck are presented. The clinical features of pain with movement are described. The role of nuclear medicine is discussed with emphasis on its importance in the early diagnosis of this entity. The radiologic stages based on the site and time of presentation are analyzed: 1) normal, 2) sclerotic bands perpendicular to the trabeculations, 3) incomplete fracture, 4) complete fracture.

Adult↗
PubMed1985

Cervical facet joint arthrography.

We describe a technique for cervical facet joint arthrography; a posterior approach is used. The patient is positioned prone, the neck flexed maximally, and the head turned 60-90 degrees opposite to the side of injection. The x-ray tube is angled cephalad in order to obtain a true tangent to the facet joint. The needle is inserted using fluoroscopic control in a direction parallel to the x-ray beam. Before the therapeutic infiltration, the intraarticular position of the needle is confirmed by injecting 0.3 ml of contrast medium.

Arthrography↗
PubMed1985

Complementary role of wrist arthrography in non-union of scaphoid fractures.

Plain radiographs and wrist arthrography of 11 patients with non-united fractures of the scaphoid were retrospectively studied. The arthrographic feature of non-union was found to be opacification of the fracture line and, secondly, of the midcarpal compartment, whereas in patients with fibrous or cartilaginous union no opacification of the fracture line was obtained. There was no single plain radiographic feature that could distinguish non-union from fibrous or cartilaginous union.

Adolescent↗
PubMed1984

Hand osteoarthropathy in pianists.

We evaluated radiographs of the hands of 20 pianists. The radiologic manifestations arising from long-term stress and strain applied to the hands were recorded. The changes are characterized by: 1) alignment adaptation consisting of axial radial rotation of the digits, particularly the fifth but also the third and fourth, 2) degenerative changes at the distal interphalangeal DIP and metacarpophalangeal MCP joints, and 3) mechanical remodeling manifested as periostal thickening and flattening of the phalangeal tufts associated with sclerosis. These findings suggest the existence of an occupational entity which might be described as pianist's osteoarthropathy.

Adult↗
PubMed1983

[Acetabuloplasty using pedicle graft of the iliac crest epiphysis in puppies].

Pedicled iliac crest epiphysis transplantation was performed after resection of the outer portion of the acetabulum in 30 puppies 3 months old. The best joint congruency was obtained when using a vertical pedicled graft, the surface of which developed into normal articular cartilage through metaplasia, and presented normal cartilage growth by means of conservation of the epiphyseal vessels. The results of this experiment enable the authors to propose a new surgical technique in the treatment of certain difficult dysplastic conditions in the hip.

Acetabulum↗
PubMed1983

Carpenter's syndrome with empty sella and abnormal LRH and TRH response.

Two sisters with Carpenter's syndrome and empty sella have been evaluated for pituitary function. The TRH injection brought a normal response of TSH and prolactin. There were no change in FSH and LH, but a paradoxical increase of growth hormone and cortisol. The injection of LRH brought a normal response of FSH and LH, no change in TSH and cortisol values and a paradoxical increase in prolactin and growth hormone.

Abnormalities, Multiple↗
PubMed1983

Undergraduate radiology clerkship: the Universite de Montreal program.

At the Université de Montréal, a four-week rotation in radiology is part of the core curriculum for students in their fifth and final year of medicine. The objective of this undergraduate radiology clerkship is to prepare the future physician to use efficiently the resources of radiology and nuclear medicine in patient care. Specific goals and methods used to achieve them are described and analysed.

Clinical Clerkship↗
PubMed1981

Fractures of the ring of the axis. A classification based on the analysis of 131 cases.

The retrospective analysis of 131 patients suffering from a fracture of the ring of the axis is reported. The injury was classified into three types according to radiological displacement and stability. Associated injuries and neurological deficit are discussed and a theory of pathogenesis presented. Guidelines for the management of each type of fracture are proposed.

Adolescent↗
PubMed1981

Contribution of CT in thoracic bony lesions.

Fourteen patients with bony lesions of the thoracic wall, seven benign and seven malignant, were evaluated. In lesions with an aggressive appearance on plain films, computed tomography proved to be very accurate for mapping their extent, and for evaluating adjacent organ involvement. For non-aggressive bony lesions of the chest wall, plain films are sufficient for determining the nature of the lesion.

Adolescent↗
PubMed1981

Thoracic fatty lesions - some usual and unusual appearances.

Since the advent of computed tomography (CT) special attention has been given to fatty lesions because of their specific coefficient of attenuation (-100 to -30 Housfield units) permitting a definitive non-interventional diagnosis. Many reports have appeared in connection with unusual conventional radiographic images related to lipid lesions as demonstrated by CT. We reviewed the different features of fatty accumulations in the thorax and report on 15 lesions, not including a number of large pleuropericardial fat pads, that we have encountered in our practice between January 1976 and December 1979. Two patients underwent surgery. The diagnosis was otherwise established by CT. All the lesions were benign. A classification is suggested.

Adult↗