[Total venous autograft of the superior longitudinal sinus. Experimental study in the dog (author's transl)].

The authors describe an original technique for the total replacement of a segment of the superior sagittal sinus in the dog. The graft, by its venous structure lined with a dural wall and by its triangular shape ensured through a certain tension, is close to the anatomical aspect. The authors use an autogenous vein graft. The latter is kept open by a wide suture to a fragment of dura which is fastened to the falx and to the dura of the vault. This fragment forms a "V" gutter in which lies the venous graft, thus protected from post-operative brain oedema. After suturing, a first sinusography is done, and a second one between the 7th and the 15th post-operative day. A study is thus made of the permeability of the graft. This permeability depends on the quality of the sutures and on the reconstruction of the dural wall of the sinus. Twenty operations have been carried out using various techniques. With the technique described, there were 11 permeable sinuses for 11 operations shown by the first sinusography. On second sinusography, 8 sinuses in 11 remained permeable.