[Cornea and anterior chamber implant with flexible closed haptics]. / Cornée et implant de chambre antérieure à anses flexibles fermées.

Authors report the result of 148 cases of flexible (with closed haptics) anterior chamber lens implantation. Analysis of per and post-operative corneal complications, Study shows increase in time of such complications, in relation to secondary displacement and alteration of lens shape.

["Bell clappers" with "ophthalmologic alarm". Apropos of 2 cases of colloid cysts of the 3d ventricle]. / "Battants de cloche" à "alarme ophtalmologique". A propos de deux cas de kyste colloïde du 3e ventricule.

We report two cases of third ventricle colloid cyst in atypical adult's neurological descriptions, tracked down by ophthalmologist, proved by computed tomography and magnetic resonance imaging. We describe physio-pathological mechanism and dwell on different ophthalmological events of exceptional occurrence with those benign tumours and on ophthalmological investigation's importance in case of persisting and unexplained headache. We conclude with spontaneous clinical course, and neurological surgery's efficacy on hydrocephalus.

[Significance of diskography and contrast medium/enzyme interaction]. / Bedeutung der Diskographie und Kontrastmittel-Enzyme-Interaktionen.

The introduction and routine usage of nucleolysis in treatment of lumbar disc disease has led to recognition of the importance of discography. In addition to confirmation and documentation of needle placement, discography is useful for diagnosis and exclusion of contraindications to nucleolysis such as escape of enzyme to nerve sheath or vascular system. Gross leakage of radiopaque material indicates probable communication to nervous structures. Possible interaction of enzyme and radiopaque were examined.

The biomechanics of posterior lumbar interbody fusion (PLIF) in spondylolisthesis.

A biomechanic analysis of the lower lumbar segments leads to the recommendation that during posterior lumbar interbody fusion it is desirable to preserve the dorsal structures, particularly of the facet joints. The area of the interbody graft should cover an area as large as possible in order to attain the benefit of the compression forces through the tension of the anterior longitudinal ligament. Preservation of the midline structures or application of a tension clamp to add dorsal tension aids bony fusion. Salvage operations in patients with previously excised posterior elements require the addition of dorsal or dorsolateral fusion to PLIF.

The effects of lead and X-rays, alone or in combination, on blastocyst formation and cell kinetics of preimplantation mouse embryos in vitro.

Two-cell embryos in late G2-phase (cytofluorometrically determined) at 32 hours post-conception were treated in vitro with PbC12 (0 . 1 or 1 . 0 micrograms per ml). An additional group was X-irradiated 1 hour later (0 . 94 Gy) with or without lead treatment. Lead alone impaired formation and hatching of blastocysts. The combined treatment increased this deleterious effect on preimplantation development but synergism was not observed. Cell proliferation was disturbed by lead alone but to a higher degree by lead plus X-rays. A pronounced reduction of cell number per embryo was found during the period after reaching the morula stage although the labelling index increased. Apparently cell death occurred. Unlabelled S-phase cell nuclei (comparison between autoradiographic results and cytofluorometric DNA-determinations on the same isolated cell nuclei) and cell nuclei with a hyperploid (0 . 1 microgram PbC12 + 0 . 94 Gy) or hypoploid (1 . 0 microgram PcC12 + 0 . 94 Gy) DNA-content may have contributed to this cell loss. Labelling of cell nuclei which according to their DNA-content were not in S-phase was only observed when 0 . 1 microgram PbC12 alone or in combination with X-rays was used. This effect may be due to unscheduled DNA-repair synthesis or to the induction of chromosome aberrations (acentric fragments or non-disjunction).