[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.