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Biomedical subjects

J M Privat

Publications and source records attributed to J M Privat.

At least 37 records · Page 2Linked to original sources
PubMed1980

[Meralgia paresthetica: an uncommon entrapment neuropathy (author's transl)].

Meralgia paresthetica although it does not produce intensive pain is a cause of chronic disability, usually barely improved by medical treatment. From the report of two cases of neurolysis the authors stress on the possibility of entrapment neuropathy of the lateral femoral cutaneous nerve in its way through the femoral canal, between the inguinal ligament and the fascia-iliaca. Anatomically, there is in this canal a normal right angle between the horizontal portion (abdominopelvic) and the vertical course in the thigh. The compression is due to a thickening of the fascia-iliaca as it forms the postero inferior wall of this canal; the nerve is squeezed between the fascia and the inguinal ligament. In 60% of cases of meralgia paresthetica where this mechanism is involved, the funicular neurolysis appears to be a radical treatment.

Adult↗
PubMed1979

[Value of preoperative investigations in the so-called "cervical myelopathy" (author's transl)].

The particular value of clinical, radiological and electromyographical features is compared in 42 patients with motor deficit related to cervicarthrosic myelopathy or amyotrophic lateral sclerosis. The initial onset of the disease was identical (motor deficit and long tracts pathways involvement). Three different groups were identifyed according to the evolution: -- Group I: (13 cases): true lateral amyotrophic sclerosis which were not operated on. -- Group II (10 cases): myelopathy called "cervicarthrosic" because of radiological findings which were operated on but had the same steady worsened course as a lateral amyotrophic sclerosis. -- Group III (19 cases): cervical myelopathy which had surgery. The operation brought about stabilization or fairly good recovery over the 18 months following at least. From a clinical aspect, the "Lhermitte sign" or objective sensitive deficit are strongly significant for cervical myelopathy. On the contrary, diffuse fasciculations specially in the tongue seem to be mostly found in lateral amyotrophic sclerosis, whereas they are restricted into the paralysed area in cervical myelopathy. Electromyographic examination is decisive: simple activity with high frequency motor units (increased amplitude and polyphasic waves) or "preponderant potentials" into a cranial nerve territory or three segments of the lower limbs are frequently found in lateral amyotrophic sclerosis. These electromyographic features are less significant in the upper limbs. The neuroradiological findings lonely cannot assert definitely the cervicarthrosic origin of the myelopathy but visualize the conflicting situation between the spinal cord and the cervical canal and allow to choose the surgical procedure.

Aged↗
PubMed1979

[Entrapment neuropathies of the posterior interosseous nerve. Clinical findings and surgical treatment (author's transl)].

Radial nerve compression palsies at the elbow and forearm result in a lower radial nerve palsy whose clinical data are generally a hardly diagnosed dissociated radial palsy, or a rough paresis in the range of epicondylalgia. Apparently spontaneous non traumatic compressions are rare. They are essentially due to lipomas, to fibromas, or sometimes to synovial cysts of the elbow. In the course of rheumatoid arthritis, palsies must be isolated. Besides, there is an actual inflammatory canal syndrome of epicondylalgias range, in which radial nerve paresis must be investigated. Traumatic compressions are essentially due to Mongeggia fractures. Radial nerve injury at the elbow is explained by a real radial canal being, in which the nerve is entrapped and where it is especially fixed on a level of its entering the supinator brevis. Any addition of a pathological element in that area (traumatic or not, tumoral or inflammatory) will be able to involve a compression and a nerve stretching, on a level of the arch of Frohse, essentially. Surgical treatment in non traumatic compressions enables to give the etiological diagnosis and to warrant healing by opening the radial canal excising the added pathological element. To achieve a total surgical operation, in epicondylalgias, the surgeons will have to open this radial canal, as well. Traumatic compressions will be explored only in cases of non spontaneous recovery, after treating the osteoarticular injury.

Arteritis↗
PubMed1978

Cerebellar gangliocytoma dysplasticum in an infant.

A boy, 25 months old, presented a cerebellar syndrome with increased intracranial pressure. Despite a ventriculo-peritoneal bypass, death occurred at the age of 4 1/2 years. Autopsy revealed a very large cerebellum, presenting a "glossy" appearance, with swelling of the brain stem. Histologically, there was a very unusual lesion with a diffuse disorganization of the cortex, a neuronoglial mixed proliferation, a large number of calcospherites, small tumour-like nodules and many leptomeningeal glial bridges. The authors consider that their case is not related to L'Hermitte-Duclo's disease, nor to gangliogliomas, and they discuss the hypothesis of hamartoma.

Autopsy↗