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Biomedical subjects

A Renner

Publications and source records attributed to A Renner.

At least 19 recordsLinked to original sources
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↗
PubMed1979

Correlation of plasma non-conjugated oestriol and plasma cortisol in late human pregnancy.

The present study concerns the diurnal variations of free plasma oestriol and their relationship to maternal plasma cortisol in late human pregnancy. Four pregnant women volunteered for the study. According to the half-life time of oestriol blood was drawn at intervals of 30 and 60 minutes, respectively, over a period of 24 hours. Free oestriol was measured by radioimmunoassay and cortisol was quantitated by a protein binding method. All patients exhibited a circadian rhythm for free oestriol with higher values in the evening and early night (14.4 +/- 3.7 ng/ml) than in the morning (11.3 +/- 2.3 ng/ml, P less than 0.001). The course of oestriol followed plasma cortisol in a significant negative correlation (r = -0.566, P less than 0.001). During the period of low cortisol concentration oestriol levels demonstrated the phenomenon of episodic secretion. The results suggest that the maternal adrenals predominantly regulate the circadian rhythm of free oestriol by a negative feed-back action on the foetal hypothalamus.

Circadian Rhythm↗
PubMed1979

[Bridge transplantation in "no man's land"].

From 1968 to 1976, 89 flexor tendon injuries were reconstructed with bridging (mini-)-tendon grafts. This technique was also applied to injuries in "no-man's land". The results were better than with traditional tendon grafts. According to the criteria of BUCK-GRAMCKO there were very good and good results in 65% as compared to 51% with traditional tendon grafting. The method is recommended only for experienced hand surgeons.

Hand Injuries↗
PubMed1979

[Microscopic surgery (author's transl)].

Author having reviewed the past of Hungarian hand surgery is dealing with the development and present state of microscopic surgery. The preconditions from point of view of the National Institute of Traumatology for realizing microscopic surgery in this country are summarized.

History, 20th Century↗
PubMed1979

[Corrective osteotomy in malalignment of healed fractures of the metacarpal and phalangeal bones].

As a result of improper immobilization in extension following phalangeal and metacarpal fractures, rotation and deviation deformities can occur. The functional disturbance and aesthetic deformities can be corrected with an osteotomy through the proximal phalanx of the metacarpal. The technique and results of this correction osteotomy are described. Prevention of these malunions by proper positioning at the time of primary treatment is emphasized.

Finger Injuries↗
PubMed1978

[Ganglion in the ulnar nerve groove (author's transl)].

Two cases of a rare localisation of ganglion is reported in this paper. A ganglion in the ulnar nerve presented by complete loss in ulnar nerve function. Attention is drawn to the importance of early diagnosis, and to the fact, that in cases of ulnar nerve lesions of unknown origin tumors in the ulnar groove must be considered.

Adult↗
PubMed1978

Ultrastructural investigation of the human hand after tendon and motor nerve injury.

Specimens of the affected muscles obtained during reconstructive surgery 4 to 16 weeks after injury of the tendon or of the motor nerve of the human hand were studied. After tenotomy the most serious lesions were displayed by the contractile elements which were homogeneous brittle and atrophied, and disintegrated independently of the functional units. The number of mitochondria decreased, the sarcoplasmic reticulum accumulated and the red and white muscle fibres could not be distinguished. After motor nerve injury the motor end plates were completely destroyed and Wallerian degeneration appeared. The contractile elements atrophied and were brittle. The number of mitochondria and the sarcoplasmic reticulum decreased, the sarcoplasmic glycogen content was higher than normal, and often the cell nuclei occupied a central position.

Adult↗
PubMed1977

[Glomus tumor].

Explore the source record for details and available documents.

Adult↗
PubMed1976

[Ultrastructural changes of human skeletal muscle after tendon and nerve injuries. I. Fine-structural changes of the hand muscles after tendor injuries (author's transl)].

During reconstructive procedures performed 4--16 weeks after the tendon lesion the specimens obtained from the injured muscle have been examined by the authors. It was found that after the tendon injury inactivity atrophy develops and a condition of equilibrum could be observed at this time. The most important changes in the fine structure were seen in the contractile elements: there were atrophied, homogenized, fragmentated and ragged independently from the functional unities. The number of the mitochondria was considerably decreased, the sarcoplasmatic reticulum was increased, and the difference between the originally red and white muscular fibres was indistinct. The glycogen content of the musculature was decreased, or it disappeared completely. No pathological changes have been observed in the sarcolemme, the cell nuclei and the motor nerve end-plates.

Adolescent↗
PubMed1976

[Ultrastructural changes of human skeletal muscle after tendon and nerve injuries. II. Fine-structural alterations of the hand muscles after injuries of the motor nerve (author's transl)].

The authors examined the fine structural alterations of the muscles after traumatic neurotomy. The most important changes were forro found on the contractile elements, especially atrophy, and fragmentation. The number of mitochondria and sarcoplasmatic reticulum decreased both the glycogen content of sarcoplasma increased. The motor end plates were complete destroyed. On the motor motor-neurons typical Wallerian degeneration could be seen.

Adult↗