METHOD FOR INTERNAL FUSION Russian patent published in 2013 - IPC A61B17/68 A61B17/00 

FIELD: medicine.

SUBSTANCE: invention refers to traumatology and orthopaedics, and can find application in performing internal fusion in surgical management of traumatic and degenerative spondylolisthesis. A method consists in forming a canal of an intervertebral disk region, inserting therein a metal device with through holes on a working surface which before the insertion into the formed canal is filled with a cortical-spongy autograft of wing of ilium. The canal is vertically extends through a vertebral body overlying to underlying in relation to the spondylolisthesis height. The metal device with the through holes represents a hollow polyhedron represented in the form of a pyramid with a square hollow base; on each of three planes of the device there are three through holes, and the fourth plane is continuous. All the four planes of the device are uniformly curved at an angle open from front, and their apexes are ball-rounded. The cortical-spongy autograft in the form of three fragments is tightly knocked through the oval through holes formed on the three planes of the device so that the autograft fragments project by the device planes by 1-2 mm. The device is introduced into the formed canal with its ball-shaped apex downwards, a continuous plane parallel to the vertebral canal until the square hollow bass of the device cannot be compared to the upper closing plate of the upper vertebra. A curvature of the device and a length of the device are specified by the surgery according to a lateral X-ray image depending on upper vertebral dislocation at the spondylolisthesis height.

EFFECT: use of the given invention enables providing stability of the operated vertebral segment without additional metal fixation, simultaneous reduction in horizontal dislocations of the vertebral bodies, reducing a number of the injuries accompanying inserting the device and reducing a risk of potential complications both when implementing the method, and in the postoperative period, reducing length of bone block formation between the vertebrae and length of staying in hospital, eliminating postoperative lumbar external vibration.

1 dwg, 1 ex