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Biomedical subjects

A Réffy

Publications and source records attributed to A Réffy.

At least 37 records · Page 2Linked to original sources
PubMed1987

Studies of human antagonistic muscles after rupture of the tendon of biceps brachii.

The fibre type ratio and the cross sectional areas of fibres were studied in triceps brachial muscle after rupture of tendon of the biceps brachial muscle in man. On the healthy and injured sides of the m. triceps brachii, the mean value of type 1 fibres was 51.9% and 52.4%, respectively. The mean cross sectional area of fibre on the two sides of the triceps muscle varied considerably among individuals without any significant correlation to injury of the biceps tendon.

Arm↗
PubMed1986

[Fine structural changes in degenerative tendinopathy].

50 tendons were examined by electron microscopy. Although they did not demonstrate any signs of inflammation or lipomatosis marked hypoxic changes in the tenocytes were evident on ultrastructural examination. The most frequent alterations were longitudinal splitting, disintegration, angulation and the so-called "kink deformation" of the collagen fibers.

Adult↗
PubMed1985

Recapillarization of tenotomized skeletal muscles after delayed tendon suture. I. Experimental study.

The investigation was under taken to study the long-term effect of tendon suturing on the capillarization of guinea-pig crural muscle after Achilles tenotomy. The results indicate that the capillary density has been greatly decreased by the tenotomy. The recapillarization and the time of restitution of the crural muscle are influenced by the interval between tenotomy and tendon suture.

Adenosine Triphosphatases↗
PubMed1985

Histochemical and biochemical alterations in skeletal muscles of rats during combined chronic hypoxia and hypokinesia.

This investigation was designed to study the long term effect of combined hypokinesia and hypoxia on the skeletal muscle. In the muscles of the hypoxic and hypokinetic animals, serious degenerative changes were found and the fibre type ratio was alterated. The malate dehydrogenase activity was decreased, and both LDH and MDH isoenzymes pattern were alterated.

Adenosine Triphosphatases↗
PubMed1985

Thermal injuries of human tendons.

Forty-two burn injuries and 22 cold injuries were investigated. Both high temperature and cold induced tenocyte necrosis, and denatured and fragmented the collagen fibres. As a consequence of severe damages of tendon and of long lasting regeneration, it was believed that even in case of incidental healing restoration of the original function could not be expected.

Adolescent↗
PubMed1985

Analysis of skeletal muscle capillarization: methodological problems.

Capillarization of skeletal muscle has been studied on the same muscle with different methods. Capillary/muscle fibre ratio, number of muscle fibres in contact with capillaries, capillary density in a unit area, capillary density on the muscle fibre surface were determined. The various methods gave different numerical data. Determination of capillary/muscle fibre ratio seemed to be the most reliable index of the changes in pathological conditions.

Animals↗
PubMed1984

The pathogenesis of tendolipomatosis; an electron microscopical study.

The development of tendolipomatosis has been studied both by light and scanning electron microscopy in the tendons of healthy persons killed in accidents. Lipid cells are rarely seen in the intact tendon. In the early stages of tendolipomatosis lipid cells are found deep and singly but in the later phases lipocytes are seen to disrupt the continuity of collagen fibres and tendon bundles and so reduce the strength of the tendon.

Adolescent↗
PubMed1984

Fine structural alterations of collagen fibers in degenerative tendinopathy.

Fine structural alterations of collagen fibers were analyzed in 29 ruptured tendons. The most frequent alterations were longitudinal splitting, disintegration, angulation, and the so-called "Knickdeformation" of the collagen fibers. All these phenomena were considered to be the consequences of stress fatigue and mechanical injuries of fibers.

Adult↗
PubMed1984

Polarization and electron microscopic studies on the collagen of intact and ruptured human tendons.

The intact and degenerated tendons were studied by the Picrosirius polarization microscopic method and by transmission and scanning electron microscopy. In the intact tendon, type I collagen were found as sole component. In the degenerated tendon, the collagen revealed histochemical and ultrastructural aspects with are typical of collagen type III. The formation of type III collagen must be an integral part of the disease process.

Adult↗