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Biomedical subjects

L Favard

Publications and source records attributed to L Favard.

11 recordsLinked to original sources
PubMed1992

[Experimental study of primary fixation of screw-ring acetabular components. Role of initial screw-cutting].

Three types of screw-ring acetabular components were implanted to determine the characteristics of their holding power and to study the influence of screw-cutting. The acetabular components were screwed into vinyl polychloride foam. Their resistance was measured. The optimal value of the locking screw couple and the value of the couple beyond the one at which the acetabular component loosened were determined. One of acetabular components was screwed in with and also without preliminary screw-cutting. Its resistance to wrenching was measured in both situations. The resistance curve at wrenching was characteristic of each screw-ring acetabular component. The resistance to wrenching was significantly higher (p < 0.01) for a given acetabular component if it was screwed into a largely open block of foam at its bottom. The screw-cutting allowed for a significantly higher resistance to wrenching (p > 0.05). It allowed for the screwing in with the least effort and for a better perception of the tightening. Knowledge of the comportment of screw-ring acetabular components once installed, usage of preliminary screw-cutting and recourse to a dynametric key are the means of improving the installation of screw-ring acetabular components.

Acetabulum↗
PubMed1991

[The combined luxation of the trapezoid and 2nd metacarpal bones. Apropos of a case].

The authors report a case of posterior dislocation of the trapezoid bone together with the second metacarpal. Among the 25 cases of trapezoid dislocations reported in the literature, no similar case has been found. The patient was seen 4 months after the injury and there was also a scaphoid instability. Open reduction and a scapho-trapezio-trapezoid arthrodesis were performed. The diagnosis, the mechanism and the treatment of this very unusual injury are discussed.

Adult↗
PubMed1990

Comparative double-blind study of two dosage regimens of low-molecular weight heparin in elderly patients with a fracture of the neck of the femur.

A randomized double-blind study comparing the efficacy and safety of two different dosage regimens of a low-MW heparin, Enoxaparin (Lovenox) 20 mg twice (group A) or 40 mg once (group B), was carried out in 103 elderly patients with a fracture of the neck of the femur. Distal and proximal thrombosis occurred in 18.3% of patients in group A and in 10.4% in group B. No major hemorrhagic complication was observed, except for two hematomas in each group. This trial suggests that a total daily dose of 40 mg of Enoxaparin can be effective in the prevention of deep vein thrombosis in elderly surgically treated patients and does not involve a major risk of bleeding.

Aged↗
PubMed1990

Two cases of plant thorn synovitis. Difficulties in diagnosis and treatment.

Two patients with inflammatory monoarthritis of the knee due to joint penetration by plant thorns are reported. Histopathology demonstrated granulomatous synovitis in both and visualized fragments of black thorn. Synovectomy was partly effective. Awareness of this cause of chronic monoarthritis will avoid delay in diagnosis and treatment.

Adult↗
PubMed1989

[Osteoarthritis of the hip in children. Proposal for a classification of sequelae guiding therapeutic indications].

Twenty-six hips in 21 patients were available at mean follow up of 5 years in a retrospective functional and radiographic analysis for the purpose of examining the late effects of infantile septic arthritis. Poor results after reconstructive efforts following hips joint sepsis suggest help classification of bony deformation. Epidemiologic and clinical findings were analysed. Late diagnosis and prematurity were found as poor forecast facts.

Acute Disease↗
PubMed1988

Fracture of the anterior arch of the atlas associated with a congenital cleft of the posterior arch. Demonstration by CT.

A case of a vertical fracture of the anterior arch of the atlas associated with a congenital cleft of the posterior arch of the same vertebra is reported. Such an association has not previously been described in the literature. X-Ray computed tomography is an excellent exam for visualizing this region and for easily distinguishing between fractures and congenital clefts.

Adult↗
PubMed1988

[Chronic anterior laxity of the knee treated by extra-articular ligamentoplasty. 226 cases reviewed after more than 2 years].

Two-hundred and twenty-six patients with chronic anterior laxity of the knee treated by Lemaire extra-articular ligamentoplasty were assessed after a follow-up of 2 to 9 years, with a mean of 4.5 years. Fifty-five knees had only an anterior laxity and 166 anterior laxity combined with medial laxity, in 100 of which tensioning or reinforcement of the medial ligament was needed. Forty-two per cent of sporting patients were able to return to sport at the same level, though half of them had some discomfort. Fifty-one per cent of patients did not experience any instability in daily and working life but half of them had occasional pain. Sixty-one per cent of knees did not, at review, show a positive MacIntosh pivot shift test and the absence of pivot shift correlated statistically with the quality of the functional result. In seventy-three per cent of knees there was a positive Lachmantest indicating definite laxity at the review. Thirty per cent of knees developed a lateral laxity, which questions the innocuousness of removal of the iliotibial tract. Twenty-seven per cent showed radiological deterioration of the medial joint space. A comparison of these results with the published results of intra-articular ligamentoplasty suggests that extra-articular ligamentoplasty with fascia lata should be limited to the treatment of isolated chronic anterior ligament laxity in middle-aged patients who do not participate in strenuous sporting activities.

Adolescent↗
PubMed1987

[Comparative study of 2 dosages of low molecular weight heparin, PK 10169, in the prevention of thromboembolic incidents during treatment of 103 femur neck fractures].

Results of this study in the elderly with fractures of femoral neck, in whom their exists an enhanced thrombogenic risk, showed that the dose of 40 mg per 24 hours as one or two divided injections of enoxaparine was as effective as adapted subcutaneous doses of calcium heparinate. It was also less iatrogenic and easier to manage (biological assays were of little use apart from platelet counts). Clinical evidence of pulmonary embolism, or mortality, were not observed in this series of 103 patients.

Aged↗