Biomedical subjects

H Cotta

Publications and source records attributed to H Cotta.

93 records · Page 6Linked to original sources

PubMedDate not supplied

[Possibilities of therapy of femur fractures following placement a of total hip endoprosthesis].

The postoperative fracture of the femur following total hip arthroplasty ranks third in occurring complications and the number of such cases is increasing. Most of the patients are elderly and multi-morbid and the fractured femur had undergone previous operations. Using the literature our own experience in 15 cases and applying a fracture classification we make suggestions for treatment of the different fracture types. Considering the patients overall health it's possible to obtain good results in the operative therapy which was necessary in most cases of these femur fractures.

Aged↗

PubMedDate not supplied

[Pathogenesis of pediatric spondylolisthesis].

62 children with spondylolisthesis were examined. Functional anatomical studies on 25 growing human spines were performed to analyse their macro morphological behavior before and after spondylolisthesis. The progression of spondylolisthesis is explained as growth disturbance. The high incidence of spina bifida occulta in spondylolisthesis is a mechanical induced osteochondrosis of the dorsal arc. The different morphology of the spondylolisthesis in children depends mostly of the age of the beginning of this disease. The differentiation between the dysplastic and spondylolytic isthmic type of spondylolisthesis is not indicated. Pour prognosis is expected in young children with kyphosis and high ventral dislocation in the involved segment.

Adolescent↗

PubMedDate not supplied

[Carbon band implants in animal experiments. Light and transmission electron microscopy studies of biocompatibility].

Part of the patella ligament was resected in rabbits and replaced by carbon fibre implants. After 1, 2, 3, 6 weeks, 3 and 12 months carbon implants with surrounding tissues as well as iliac lymph nodes were removed and examined by light- and transmission electron microscopy. Of special interest were the questions whether the carbon fibre implant, will be removed by phagocytosis and substituted by a new ligament or a adequate repair tissue? Our light- and transmission electron microscopic studies give no indication of successful removal of carbon fibres by phagocytosis. The carbon fibre implant was surrounded by dense connective tissue like a scar. In deep layers of the carbon implant was no vital dense or regular connective tissue, even not after 3 and 12 months. There is no replacement of the carbon fibre implant by a new ligament or tendon but a persistent foreign body reaction. With regard to these results it is very doubtful if good late results with ligament and tendon replacement by carbon fibre implants can be expected in patients.

Animals↗