The method of fixation of the vertebra to an external leg

 

(57) Abstract:

The invention relates to traumatology and orthopedics, and can be applied in the treatment of diseases and injuries of the spine. The purpose of the invention is to enhance reliability of fixation of the vertebra to an external device and reducing the trauma intervention. This is achieved by fixing implement a screw rod, held in the body of the spine through the base of the spinous process of one of the halves of the pedicles of the vertebra.

The invention relates to medicine, namely to traumatology and orthopedics in the treatment of diseases and injuries of the spine.

There is a method of fixing vertebrae on external support by capturing the spinous process of two pairs of curved needles.

The disadvantage of this method is that the fixation of spinous process is carried out in its thinnest part, which can lead to fracture of the spinous process when attempting manipulation of the vertebra, the efforts of which exceeds the strength of the bone. In addition, the small depth of penetration of the sharp ends of the curved needles in compact bone of the spinous process implies the possibility of slipping off the needles.

Such ability is that often occurs in diseases of the spine. It is also impossible to implement this method of fixation in case of fracture of the spinous process of the injuries. The method involves the passage of a curved needle through the soft tissue, including fascial vagina and back muscles at many points, at least four, and with two sides, which makes it among traumatic.

The purpose of the invention to increase the reliability of fixation of the vertebra to an external device and reducing trauma.

The aim is achieved in that the fixation of the vertebra on external support for the spinous process is a screw rod threaded through the base of the spinous process and one of the halves of the pedicles of the vertebra.

The method is as follows.

In the position of the patient on his stomach a trocar is a puncture of the skin, subcutaneous fat, fascia and muscle with the orientation of the stylet so that its axis passes through the base of the spinous process and coincides with the longitudinal axis of the half arch of a vertebra.

In the second stage, remove the stylet trocar and through the base of the arch is injected screw rod in half the pedicles of the vertebra.

At the third stage are removed from the tissues of the outer cylinder of the trocar.

In the fourth stage the Cove on external support allows you to zastabilizirovat several spinal segments. Grip vertebra creates the opportunity for further necessary manipulation of the spine.

To confirm the effectiveness of the proposed method of fixation of the vertebral body were conducted bench test on universal testing machine for testing of polymeric materials FM 250. The studies were performed on preparations of the vertebrae taken from the corpses of people who died as a result of injury at the age of 30 to 50 years without spinal cord injuries. In 24 cases produced fixation proposed method. The strength of backlog vertebra screw rod was 99.2 of 5.29 kg in order To compare the tests on the reserve strength of a bell-curved needle (introduced in the spinous process). The strength of backlog amounted to 57.0 4,32 kg (number of studies 10). Thus, the increased strength of backlog in the proposed method is almost twice as compared with the prototype.

The proposed method allows for reliable fixation of the vertebra at the base of the spinous process and half of the pedicles of the vertebra. Thus improving the reliability of fixation is achieved by contact of the screw rod with greater bone mass. Reducing the morbidity is achieved by the fact that the introduction of rod sunesra fixation.

The METHOD of FIXATION of the VERTEBRA TO EXTERNAL SUPPORT by transcutaneous holding the lock, characterized in that use screw terminal, enter it through the base of the spinous process of one of the halves of the bows.

 

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SUBSTANCE: one should isolate and dissect the tendons of anterior tibial and long fibular muscles to dissect the tendon of posterior tibial muscle against the site of fixation and direct it towards plantar rear area in front of internal ankle through the tunnel in subcutaneous fiber, then one should subcutaneously direct dissected tendons of anterior tibial and long fibular muscles onto plantar rear area to suture them so to leave free the tendinous end of posterior tibial muscle which should be intraosseously fixed to median wedge bone that keeps the process of foot repulsion during walking.

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