[Electrostimulation of anterior sacral nerve roots in the treatment of central neurogenic bladders. G.S. Brindley's technique. Results of the 40 first French cases].

The results of the first 40 cases who underwent implantation of a sacral anterior root stimulator (G.S. Brindley) in France are reported.

[Multidimensional analysis of reactive forces of the foot during normal walking].

The authors present the analysis of the three components of ground reaction forces on both left and right feet on 50 subjects. Fourier analysis shows that a 25-Hz sampling is sufficient to fully characterize the normal gait. The approach used in order to study the data tables built for each component consisted in principal component factor analysis.

[Correlation and validation of different methods of evaluation of results after surgery of the rotator cuff. Plea for a standardized method].

Several charts elaborated for the assessment of the results of surgical treatment of cuff rotators tears were critically analysed. Twenty-one patients were reviewed and results assessed with three different charts, the Patte, Kenesi and Constant ones. The correlation of the parameters was studied and was found to be satisfactory.

Percutaneous interbody osteosynthesis in the treatment of thoracolumbar traumatic or tumoural lesions. A review of 51 cases.

The authors describe a technique of percutaneous interbody osteosynthesis applicable to the dorsal and lumbar spine. 51 patients were so treated for different aetiologies: traumatic conditions (35 cases) and tumoural lesions (16 cases). The material used consisted of special instruments that are positioned in double obliquity by a percutaneous posterolateral approach.

Discectomies of the lower cervical spine using interbody biopolymer (B.O.P.) implants. Advantages in the treatment of complicated cervical arthrosis. A review of 150 cases.

The authors report their experience with 150 cases of discectomies performed with interbody grafts using a copolymer (Biocompatible Orthopedic Polymer or BOP). Made of N-Vinylpyrrolidone-Methylmethacrylate monomers, polyamide fibres and calcium gluconate. BOP is a biocompatible, biodegradable, osteoconductive matrix, easy to use and quite safe.

[Direct osteosynthesis of fractures of the odontoid process using a biodegradable implant (B.O.P.)].

The authors describe a new technique for treatment fractures of the dens. An anterior approach (technique of Boehler) is used. It provides for one-stage fusion and no additional disturbance of C1-C2 rotation.

Soft tissue augmentation as a method of reducing the liability to pressure sores in spinal injured patients.

The development of a procedure designed to reduce the liability to pressure sores over bony prominences is described. This employs the properties of a particular type of carbon fibre pad implanted surgically over the bony prominence. The mechanical response of the pad to loading has been examined.

[Pars tuberalis : a neuro-endocrine formation. Study in the piglet].

Pars tuberalis of the young Pig has been studied by cytoimmunological techniques and by electron microscopy. Electron microscopy demonstrates the high content of the area in nervous fibers and aminergy terminals making frequent synapses with granulated glandular cells. Amongst these, the majority were reacting as corticolipotropic cells of the intermediate lobe.

[Cyto-immunochemical detection of gamma endorphin in swine adenohypophysis].

An immunserum was prepared from gamma endorphin and its specifity was checked by the indirect method. It was tested on hypophysis which were taken from Pigs since birth till 3 months old. The anterior lobe as well as the intermediate lobe have reacted.

[Importance of acidophilic fine granulation cells in the corticotropic activity of the adenohypophysis].

The cyto-immunological tests prove that anti-ACTH (17-39) immunserums do not become localized only on beta cells of anterior lobe of Man's pituitary. They can also react upon cells with slender erythrosinophilic granules. Normally, these cells are very scattered.

[Pituitary modifications in a case of Schilder disease (author's transl)].

In a case of Schilder disease with a heavy atrophy of adrenal cortex the immunocytological analysis of anterior pituitary shows a generalized hypertrophy and a severe last of granulations of the beta cells which reacted very weakly to au anti-serum anti-ACTH 17-39. These modifications agree with biological titration proving an hypersecretion of ACTH and beta MSH.

[New histochemical contributions to the study of corticotropic cells in the adenohypophysis of the chick enbryo].

Comparative analysis of results obtained after subsequent treatments of chick embryo adenohypophysis by anti-ACTH 17-39 Is, PAS and Bodian method demonstrates that ACTH cells are PAS positive, Bodian negative and are located in the cephalic lobe. With the histochemical fluorescence method of Falck, the cells marked by anti-ACTH 17-39 Is exhibit an induced fluorescence, after L-DOPA injection. However, after treatment by metopirone, numerous cells of the caudal part of the adenohypophysis take up L-DOPA but they are not corticotrophs.

[Preliminary studies on the argyrophilic cells of the human hypophysis].

Appropriate technics such as Bodian's method prove the presence of very numerous argyrophilic cells in the human adenohypophysis in the enfant as well as in the adult. This population of argyrophilic cells is heterogenous, cytoimmunological tests demonstrate that a lot of them belong to the groups of gonadotropic cells. On the other hand, no argyrophilic cell stains positively with Falck's technic.

[Radioimmunoassay of bovine serum progesterone].

Radioimmunoassay determination of plasma progesterone in the cow without chromatographic purification was developed. The level ranged from 0.6 ng/ml during estrus to 6.