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Biomedical subjects

I Eventov

Publications and source records attributed to I Eventov.

10 recordsLinked to original sources
PubMed1991

Osteopenia, hematopoiesis, and bone remodelling in iliac crest and femoral biopsies: a prospective study of 102 cases of femoral neck fractures.

Cancellous microanatomy, bone remodelling, and hematopoietic tissue were studied in iliac crest and femoral neck biopsies taken intraoperatively in 102 consecutive patients with displaced intracapsular fractures. About half of the femoral biopsies had osteopenia, and most showed replacement of hematopoietic tissue by fat cells, with absence of osteoblasts and osteoclasts. In contrast, most of the iliac crest biopsies showed relatively less decrease in cancellous bone, while hematopoietic tissue and bone remodelling cells were present in approximately 75%. These results indicate that the iliac crest biopsy does not necessarily reflect cancellous microanatomy, hematopoietic tissue, and bone remodelling at other skeletal sites in any given patient.

Aged↗
PubMed1990

Postoperative injuries of upper limb nerves.

Three cases of different types of nerve injuries following orthopedic and chest surgery are described. Recovery from these nerve injuries was prolonged and incomplete. By constant awareness of potential nerve damage during operation, it is possible to prevent such injuries.

Angina Pectoris↗
PubMed1989

Bone biopsies and serum vitamin-D levels in patients with hip fracture.

To assess the correlation between osteoid and vitamin D in patients with a proximal femoral fracture, bone biopsies of the fracture site and the iliac crest were studied; and vitamin-D levels were measured in fasting blood taken on the day of admission. No osteomalacia was found at either site in any of the 95 patients investigated. In 65/95 patients, levels of 25-hydroxy-vitamin D (25-OHD) and 24,25-dihydroxy-vitamin D (24, 25-OH2D) were within the normal range, whereas 30/95 patients were deficient. Because there was no correlation between the amount of osteoid and vitamin-D metabolites in our patients, we concluded that osteomalacia was not a contributory factor in the pathogenesis of the hip fracture.

24,25-Dihydroxyvitamin D 3↗
PubMed1987

Development of the olecranon bursa. An anatomic cadaver study.

Anatomic dissection of the elbows of 63 cadavers selected at random were performed in an attempt to find out whether the incidental disparity of olecranon bursitis between children and adults might be explained by anatomic differences. The volume of the bursae was determined by syringes used for methylene blue injections. There were no olecranon bursae in children under the age of 7 years; the volume of the bursae increased with age; and the bursa was usually larger on the right, i.e., the common dominant side. The formation of the bursae in late childhood can explain the low incidence of olecranon bursitis in children.

Adolescent↗
PubMed1987

Multiple osteonecrotic lesions in systemic lupus erythematosus.

A patient with systemic lupus erythematosus who developed osteonecrosis in 13 sites is presented. Most lesions occurred while corticosteroid dose was increased during disease exacerbations. Pathogenetic mechanisms are reviewed and possible simulation of polysynovitis is discussed.

Adult↗
PubMed1986

Hematopoiesis in osteoporosis--preliminary report comparing biopsies of the femoral neck and iliac crest.

Undecalcified plastic-embedded semithin sections of femoral neck and iliac crest biopsies taken at operation in 44 patients with intracapsular femoral neck fractures were examined for hematopoiesis, osseous remodelling and osteopenia. Osteopenia, osseous remodelling and hematopoiesis were present in over half of the iliac crest biopsies. More than half of the femoral neck biopsies showed osteopenia and replacement of the hematopoiesis by fat cells with virtual absence of osteoblasts and osteoclasts. In these patients, osteopenia in the iliac crest appears to be of the "high turnover type" while that in the femoral neck is of the "low turnover type." These results indicate that the iliac crest biopsy is not necessarily representative of osseous remodeling and hematopoiesis at other skeletal sites.

Aged↗
PubMed1983

Hip fractures in patients with Parkinson's syndrome.

Hip fractures in patients with Parkinson's syndrome present a continuing challenge to orthopaedic surgeons. Sixty-two consecutive such patients have been reviewed. With or without operation, there was very high rate of mortality (31%) and complications. However, the functional results, the ability to walk, progression of the disability, and the quality of life were significantly better after operation. The results suggest that operation is the preferable solution for these patients. They require, however, much more particular care than other patients with hip fractures. This includes adequate adjusted antiparkinson medication, appropriate anesthesia with special attention to adequate ventilation and postoperative analgesia, more intensive respiratory and functional physiotherapy, very meticulous nursing care, and a relatively extended period of preventive antibiotics.

Aged↗
PubMed1979

Cleidocranial dysplasia. A family study.

The incidental observation of Wormian bones in the skull and defective ossification of the public symphysis in a mildly scoliotic 12-year-old girl prompted a clinical and radiological study of members of her family. The diagnosis of cleidocranial dysplasia (CCD) was established by observing similar skeletal abnormalities in eight out of ten of them but the classical clavicular defect in only one, the last to be examined. Abnormal modelling of the medial end of both clavicles was observed in all those affected. A modelling defect of the public bones is suggested as an additional, hitherto undescribed, radiological sign. The progression with age of certain radiological features of CCD is discussed. It is suggested that this family represents an atypical variant of CCD. Such variance may be more prevalent in patients with mild scoliosis than presently suspected. A complete skeletal survey with espeical attention to the skull, pelvis and medial aspect of the clavicle and family studies may be essential for the definitive diagnosis of CCD in certain patients.

Adolescent↗
PubMed1978

An evaluation of surgical and conservative treatment of fractures of the ankle in 200 patients.

The longterm results of surgical and conservative treatment in two almost identical groups of patients with fractures of the ankle have been analyzed. The results were better after conservative treatment; delayed operation and repeated manipulations were found to be the main reason for the poorer postoperative results, especially in elderly osteoporotic patients. The damage consequent to repeated manipulations, the difficulties resulting from delaying operation, and the advantages of early open reduction are discussed. It may be that under certain conditions of unavoidable delay, a mild residual displacement should be accepted rather than repeated manipulation and delayed open reduction. It is concluded that, when indicated, operations should be performed as early as possible after injury, probably giving the best end results as evidenced by the preliminary findings of a prospective study currently under way.

Adolescent↗