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Biomedical subjects

A Renner

Publications and source records attributed to A Renner.

At least 37 records · Page 2Linked to original sources
PubMed1994

[Hand injury caused by a funnel-producing machine].

Authors describe a case of severe hand injury, caused by a funnel producing equipment. In the region between the metacarpals II and III a high pressure, penetrating, mechanical and thermal injury has arisen. The secondary necrosis expanded and this made a covering with soft tissue of full value necessary. Because of the local relations and allergic complications the local and distant possibilities were narrowed. It was possible to find a final solution by the transfer of flaps from the index and III finger and supplementary plastics, using split thickness skin grafts. The result was functionally perfect, esthetically adequate.

Accidents, Occupational↗
PubMed1993

[Management of malacia of the os lunatum by implantation of a dorsal metacarpal vascular bundle].

In the treatment of malacia of the lunate bone, beside the prosthesis and procedures aiming the decrease of load, the revascularization of the bone is the third basic therapeutic principle. One possibility of the later, not yet current in this country, is the implantation of the metacarpal vascular bundle in the lunate bone. As far as we know we were the first to perform this operation in Hungary. In this paper our first cases are described together with a detailed description of the operative technique and we would call at the same time to further common examinations.

Adult↗
PubMed1993

[Synovitis and bone changes induced by silicone prosthesis].

Authors report on the clinico-pathological analysis of cases of silicon granuloma, developed 5-15 years after the insertion of the prosthesis. It is thought on the basis of histological and electron microscopic examinations that the process of granulation already started, is augmented by the granules, newly arising from the attrition. The silicon granuloma causes not only the damage of the synovia but the destruction of the surrounding soft parts and bones too.

Adult↗
PubMed1993

[Experience with the management of fractures of the distal tibial end penetrating into the joint].

Authors made a follow-up of the pilon fractures treated in the National Institute of Traumatology during the five years period of 1983 through 1987. 43 of them could be controlled after 4-8 years personally. A radiological follow-up result of at least 1-2 years was nearly in all cases available. The surgical therapy in this period was almost exclusively stable osteosynthesis. Fixateur externe was used only exceptionally. On the basis of their results it is thought that in the treatment of pilon fractures the stable osteosynthesis with exposure should have an important role in the future too.

Ankle Injuries↗
PubMed1991

Tumors and tumor-like lesions arising in tendons. A clinicopathological study of 75 cases.

Eight cases of malignant tumors, 38 cases of benign tumors, 15 cases of metastatic tumors, and 14 cases of tumor-like lesions arising in tendons seen over a period of 22 years (1967-1988) are surveyed. Benign tumors of tendon occur relatively frequently - in 38 (1.7%) of 2143 tendon biopsies - but malignant tumors (0.37%) and metastases (0.70%) are extremely rare. Malignant tumors occurred most frequently in lower limb tendons, while benign tumors were most often found in the tendons of the hand.

Female↗
PubMed1991

[Selective denervation of the wrist joint].

The long-lasting pains of the wrist cause many times problems in the everyday trauma treatment. They are also frequently encountered by orthopedists, internists and rheumatologists. The pain is most frequently the characteristic symptom of osteoarthritis of the wrist, however it may appear without an accident (as a part of destructive and systemic disease, damaging the joints) too. Based on the paper published by WILHELM in 1966 we have performed in this Institute selective denervation of the wrist in 77 cases, with good results in 45 per cent. Our material is analysed in etiologic groups, giving light to the field of indication of this operation, that can be considered most generally as an alternative solution versus radiocarpal and intercarpal arthrodesis. This paper reports beside the description of the method on our favourable experiences, that are published in hope of a more wide spreading of the method.

Arthritis↗
PubMed1990

[Recurrent infantile digital fibromatosis].

In connection with a boy's case, receiving treatment in their institute several times, authors sum up our knowledge on infantile relapsing digital fibromatosis, first time in Hungary. Results of histological and electronmicroscopic examination are reported compared to results of foreign authors' studies of similar subject.

Amputation, Surgical↗
PubMed1989

[Immunohistochemical and immunologic changes in aponeurosis in Dupuytren's disease].

Authors examined the aponeurosis of 23 patients with Dupuytren's contracture and of 5, formerly healthy persons, who died in consequence of accidents. It was found that the IgA and IgM content of the palmar aponeurosis is significantly elevated in Dupuytren's disease. The distribution of the immunglobulin containing cells and the fibronection localisation of the aponeurosis was also examined. On the basis of their examinations they think that the autoimmun mechanism may have a role in the development of Dupuytren's disease.

Dupuytren Contracture↗
PubMed1988

Diurnal variations in unconjugated oestriol levels during early pregnancy and their relation to maternal cortisol levels.

We studied maternal plasma levels of oestriol (measured by radioimmunoassay) and total cortisol (measured by a protein binding method) in 11 women from 8 to 22 weeks gestation. Blood specimens (5 ml) were drawn over a 24-h period at 60 and 30 min intervals. The diurnal rhythm of cortisol with higher values in the morning than in the afternoon and evening was present at all gestational ages studied. Unconjugated plasma oestriol showed a similar circadian rhythm to maternal cortisol (r = 0.576, P less than 0.01) in the 8th week. From the 9th to the 11th week oestriol values rose and there was no evidence of a circadian rhythm. In the 12th week plasma oestriol again showed a circadian rhythm, with higher values at night (117.3 +/- 9.5 pg/ml) than during day-time (104 +/- 7.5 pg/ml, P less than 0.001). This pattern remained until the 22nd week, when plasma oestriol levels at night (3.78 +/- 0.49 ng/ml) were markedly higher than in the day-time (3.16 +/- 0.3 ng/ml, P less than 0.001). An inverse relation between oestriol and cortisol levels as shown in late human pregnancy could not be demonstrated for the early stages we studied. The interval between rising cortisol and falling oestriol levels decreased from 6 h in the 12th week to 3.5 h in the 22nd week of gestation. This suggests an increasing sensitivity of the fetal hypothalamus to the feedback effect of maternal cortisol.

Circadian Rhythm↗
PubMed1988

Immunopathological study on palmar aponeurosis in Dupuytren's disease.

The authors examined the immunological and immunohistochemical alterations of palmar aponeurosis in Dupuytren's contracture. In the IgG-content no difference were found between the intact and diseased aponeurosis. The mean of IgA content was 2 fold, the IgM content 3 fold higher in Dupuytren's aponeurosis than in normal ones. The immunoglobulin containing cells localised around the Dupuytren's nodules and in fibrotic, but not nodular parts of aponeurosis. Extracellular immunoglobulin deposits were not found.

Adult↗
PubMed1988

[Reconstruction of metacarpophalangeal and interphalangeal joints with endoprostheses following injuries].

Implants have been used since 1969 by the authors for the replacement of damaged finger joints following trauma. In several cases reconstruction of other damaged tissues in the same finger was also performed. A method is described for replacement of the central slip of the extensor tendon over the PIP joint. Analysis of twenty-one MP and sixty-eight PIP endoprostheses placed in eighty-three patients until 1979 is given. Significant improvement in the range of movement is seen. Preoperative pain was relieved in all cases. There was a need to change occupation in ten percent of patients. Careful analysis of early and late complications calls attention to the proper selection of patients for surgery.

Adolescent↗
PubMed1988

Fine structural alterations of the palmar aponeurosis in Dupuytren's contracture. A combined scanning and transmission electronmicroscopic examination.

The authors examined the fine structural alterations of palmar aponeurosis in Dupuytren's contracture. Two types of the fibroblasts can be identified: classic fibroblasts and myofibroblasts. In the Dupuytren's tissue one fourth of all non-inflammatory cells were regarded as myofibroblasts. In the Dupuytren's aponeurosis the orientation of the thin and thick collagen fibers varied. The Paccini corpuscles were hypertrophised and around them compact collagen tissue was increased.

Adipose Tissue↗