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Biomedical subjects

A Réffy

Publications and source records attributed to A Réffy.

At least 55 records · Page 3Linked to original sources

Experimental microvascular sleeve anastomoses.

Microvascular sutures are the most essential parrt of microsurgery. The three basic types of anastomosis, i.e. end to end (ETE), end to side (ETS) and end in end (EIE), differ, beside the flow parameters, also in the succession, number and depth of the sutures as well as in the technique of suturing. In clinical microsurgery ETE and ETS anastomoses are applied. Several authors have attempted to telescope the vascular ends into each other to simplify the technique of anastomosis, to reduce the time of operation as well as to eliminate intraluminar suturing [1, 3, 6, 9].

Animals↗

Muscle capillaries in tenotomized human muscles.

The capillaries were studied in tenotonized human muscles after tenotomy or spontaneous rupture of the tendon. The mean capillary area was not significantly different in the patients with tenotomy, or with spontaneous rupture of the tendon, as compared to intact muscles. The mean basement membrane area as a percentage of total capillary area was significantly larger and the size capillary lumen significantly smaller in the injured than in the intact muscles. The alterations of the capillaries were time-dependent.

Adult↗

Hypoxic alterations of tenocytes in degenerative tendinopathy.

The authors examined 34 tendons under the electron microscope, excised within 48 h after rupture of the tendons. The tendons did not exhibit any signs of inflammation or lipomatosis, but fine-structurally marked hypoxic alterations in the tenocytes could be seen. The degenerative (hypoxic tendinopathy appears in three phases, and the hypoxic lesions of the tendon occur at multiple foci or diffusely, and the various phases can exist simultaneously.

Adolescent↗

Tumours arising in skeletal muscles and tendons in adults.

Nineteen cases of tumours arising in the skeletal muscles and 22 cases of tumours arising in tendons seen over 15 years (1967-1981) are surveyed. Malignant tumours occurred most frequently in lower limb muscles and tendons, while benign tumours in the tendons of the hands.

Adolescent↗

[Changes of the tissue CO2 and O2 tension in the healing process of crushed muscles (author's transl)].

Silastic tonometer was implanted into the space between soleus and gastrocnemius muscles of the rat. When tissue O2 and CO2 tensions returned to normal, the muscles were crushed with the skin closed. The O2 tension in the muscles was found to decrease from 44 HGMM to 10-15 hgmm following the crush, and kept it until the 4th day. After the 5th day pO2 begins to increase on the 10th day it will reach the O2 tension of the intact muscle, and keeps increasing after the 10th day. Afterwards the muscular O2 tension begins to decrease, parallel with the development of granulation tissue and will return to the original rate on the 20th day post injury. Histological picture shows that regeneration has been completed by this time too.

Animals↗