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Biomedical subjects

J Zadeh

Publications and source records attributed to J Zadeh.

17 recordsLinked to original sources
PubMed1998

Microsurgical anatomy of the internal vertebral venous plexuses.

Few studies have been done about the venous vascularization of the spine since neuroradiologic studies in the 1960s and 70s. The aim of this study was to clarify the topography of the internal vertebral venous plexuses in relation to the posterior longitudinal ligament and the dura. The relationships of the vv. were studied at different levels of the spine. The internal vertebral venous system of seven cadavers was injected with a blue bicomponent silicon rubber. It consisted with an anterior and a posterior venous plexus. At the cervical level, the anterior longitudinal vv. are located in a dehiscence of the periosteal layer, in the lateral part of the spinal canal. At each level, they joined the contralateral one at the midline by a retrocorporeal v. located behind the posterior longitudinal ligament. No vv. were found in the epidural space. There was a major development of the retrocorporeal v. of the axis, but it did not receive any venous drainage from the vertebral body. At the thoracic and lumbar levels, the anterior venous plexuses remain within a dehiscence of the periosteal layer, which is thinner. The retrocorporeal vv. become pre-ligamentous. We did not find any posterior venous plexuses at the cervical level, but they were evident at the thoracic level and became more voluminous and sinusoidal in the lumbar region.

Adult↗
PubMed1997

[Utilization of thermosettable compounds in anatomic research].

The authors described a method of vascular injection with a coloured silicon rubber. The injected material was a biocomponent silicon elastomer, with ambiant temperature room vulcanizing. It was supple, easily dissequable and diffuse well into all small caliber vessels. The soft pressure injection did not cause neither material collection by vessels rupture nor anatomic structure distortion. This material could constitute an excellent alternative to coloured latex injection.

Anatomy↗
PubMed1989

[The posterior sacral plexus].

The posterior sacral branches, when connecting, form the posterior sacral plexus and its terminal branch, the posterior gluteal nerve that we suggest be called the inter-gluteal nerve because of its course and territory. Apart from their anatomic interest, their lesions can explain some neuralgias in sacrococcygeal attacks.

Back Pain↗
PubMed1989

[The spinal periosteal layer and the fibrous sheath of the cervical spinal canal].

At the cervical level, in the foramen, the rachidian nerve is surrounded by two mantles: a dural one and a fibrous one continuing the epidural periosteal sheet of which it is a thickening. We can wonder whether this fibrous sheath is at the origin of some cervical radiculalgias in which one cannot detect any radiological lesion of the skeleton or disk.

Cervical Vertebrae↗
PubMed1987

[Cutaneous territory of the posterior branches of spinal nerves. A review of Dejerine's scheme].

This report concerns not only anatomical study of posterior branches of the spinal nerves, but has also a clinical aim. The cutaneous territories and the sites of pain irradiation are precised. In the cervico-thoracic region emphasis is placed on the importance of the fourth cervical posterior branch and of the second dorsal posterior branch. At the lumbar and sacral levels the authors distinguish three pain pathways: from up to down and from outside to inside: the first corresponding to posterior branches of 11th and 12th dorsal nerves, the second to those of first, second and third lumbar nerves and the third to sacral nerves.

Humans↗
PubMed1986

[Make-up of the posterior branches of the spinal nerves].

By opposition to the anterior branches of spinal nerves which are constituted by motor, sensitive and autonomic fibers, some of the posterior branches have not or have few of sensitive territory: C1, C5, C6, C7, D1, L4, L5 are like that. This particularity ought to be reflected in their histogram. In a first analyse authors study number of fibers, in a second their caliber.

Cell Count↗
PubMed1984

[Temporal osteomuscular flap. Anatomical study and experimental and surgical technic].

Mandibular reconstruction can be realized through use of an osteo-muscular flap of the temporal bone by a sagittal rotation around it's principal vessels. Experiments and anatomy study have desined the details of the technique which has been demonstrated in one clinical case. In spite of the necessity of neurosurgical collaboration the technique is easy and rapid and the flap's excellent blood supply makes it a good choice when local conditions of mandibular osteoplasty are bad.

Adult↗
PubMed1977

[Age and other factors in the prognosis and operative indications for brain surgery].

Attempt at evaluation of the operative risk depending on seven factors. 1--For benign tumours (Example: meningiomas): 1--greater than 65 years; 2--functional insufficiency, depending on the type of tumour; 3--the volume of the tumour; 4--site of the tumour; 5--foreseeable operative difficulties; 6--the importance of intra-cranial hypertension and the level of pre-operative consciousness; 7--life expectancy, quantitative and qualitative. II--Extrapolation of the previous equation to malignant tumours, chronic sub-dural hematoma, intra-cerebral hematoma and surgery of pain.

Age Factors↗
PubMed1975

[The surgical approach to spontaneous intracerebral hematomas (author's transl)].

Following a recent statistical survey of 56 cases over a period of 3 years the authors considered the choice between the frontal or the parieto-temporal approaches to intracerebral haematomas. From their anatomical studies they considered that the frontal route is the better for approach to haematomas of the external capsule, whereas the parieto-temporal approach is preferred for haematomas of the internal capsule.

Cerebral Hemorrhage↗