[Anesthesia in percutaneous discectomy by the Onik's technique].

The type of anaesthesia used in percutaneous discectomy, a new technique for treating slipped disc, is described. The personal series consist of 960 patients. In 768, local anaesthesia by infiltration of the anatomical trajectory was used as a follow-up to nucleotome.

The Onik method of automated percutaneous lumbar diskectomy (A.P.L.D.). Criteria of selection, technique, and evaluation of results.

The Onik method of automated percutaneous lumbar diskectomy is a new type of percutaneous surgery for the treatment of herniated lumbar disk. Candidates for this procedure should be carefully evaluated on the basis of precise clinical criteria and instrumental diagnosis. The goal is to select patients in whom excellent results can be achieved, recognizing the limitations as well as the merits of the technique.

Atherosclerosis of the vessels in the ligamentum teres. Optical and electron microscopy findings in elderly patients with femoral neck fractures.

The ligamentum teres was studied in 20 subjects, aged from 64 to 83 years, with fractures of the femoral neck treated by prosthetic replacement during 1985. The arterioles were examined under a stereoscopic dissection microscope; they were further studied by optical and electron microscopy. Almost complete occlusion by typical proliferative atherosclerotic changes was a constant finding, thereby cutting off any significant vascular supply to the femoral head.

Atherosclerosis of the microcirculation in the femoral head: based on a study by optical and electron microscopy of femoral heads removed at operation.

The authors studied 56 femoral heads removed at operation, using dissection stereoscopic microscopy and electron microscopy. They were able to demonstrate atherosclerotic lesions involving the microcirculation in the femoral head. Atheromatous changes in the external iliac and profunda femoris arteries have already been documented, but similar changes in the small vessels within the femoral head have not previously been noted in the literature.