METHOD OF POSTERIOR INTERBODY SPONDYLOSYNDESIS AND IMPLANT FOR ITS REALISATION Russian patent published in 2015 - IPC A61F2/44 

FIELD: medicine.

SUBSTANCE: unilateral interlaminar access to the intervertebral space is performed. After decompression and medial displacement of roots and the dural sac a restrictor is installed for their protection. Direction and height of the interbody space are specified by means of the butt end mill. The claimed intervertebral implant for operations of posterior spondylosyndesis is screwed into a prepared space in an oblique-transverse direction. The implant contains a metal hollow cylindrical body with through holes in the side surface and a transverse partition with a slot for the instrument in one of the butt ends. It is provided with a screw thread on the outer lateral surface with the thread profile in the form of a cone not lower than 2 mm high. The thread profile is made with a truncated tooth apex not more than 0.3 mm wide. The thread step constitutes from 1.6 to 2.0 heights of the thread profile, the angle of the tooth profile constitutes 20-35°. A part of the outer lateral surface, adjoining the butt end, opposite to the transverse partition, is made with a conic slant.

EFFECT: method ensures the reliability of posterior spondylosyndesis due to the application of the claimed intervertebral implant for the operations of posterior spondylosyndesis.

4 cl, 5 dwg, 2 ex