Anterior H-shaped plate fixation

Anterior H-shaped plate fixation is used for the treatment of spinal fracture and dislocation. Treatment of diseases: spinal fractures Indication Anterior H-shaped plate fixation is suitable for: 1. Single-segment dislocation injury without bone defect or vertebral compression fracture requires interbody fusion. 2. For the anterior column of the vertebral body due to severe wedge-shaped compression fracture or burst fracture, accompanied by neurological dysfunction, anterior decompression and bone grafting are required for vertebral body resection. Double-segment fixation is optional. Surgical procedure 1. Expose the anterior approach to reveal the diseased vertebral body and intervertebral disc. 2. If the single segment is fixed, the disc tissue of the lesion segment is removed, and the endplate of the upper and lower vertebral bodies is included until the subchondral bone. A humerus block with three-sided cortical bone was cut from the iliac crest, and the humeral block was trimmed into a wedge shape so that the thicker part was located at the leading edge of the vertebral body to facilitate restoration of the physiological lordosis of the cervical vertebra. With the H-shaped steel plate, it is possible to simultaneously exert a pressurizing action at the front and the back of the transplanted bone. If the transplanted bone is in the shape of a distance, the application of the steel plate only exerts a pressurizing effect on the anterior side of the plate, and the posterior vertebral facet joint has a distracting effect, which may cause damage to the posterior ligament structure. 3. After the bone or bone cage (Cage) is implanted between the vertebral bodies, an appropriate length of the H-shaped steel plate is selected and gently curved to accommodate the physiological lordosis of the cervical vertebra. At the excised disc, the sagittal diameter of the vertebral body was measured along its endplate. The depth at which the drill bit is drilled is determined based on the measured length. 4. A 2.5 mm long drill bit is drilled into the vertebral body through the nail hole of the steel plate according to the measured depth. Then measure the depth of the hole again. If the posterior cortical bone has not been penetrated, the drill bit is deepened by 1 mm and drilled again. Repeat this until the posterior cortical bone is penetrated. In order to avoid damage to the nerve structure in the spinal canal, this step-by-step method of operation is necessary. 5. Using a 3.5 mm tap, tap the hole in the anterior cortical bone of the vertebral body, and then select a 3.5 mm screw of appropriate length to fix it. Fix with other screws in the same way. 6. Thoroughly stop bleeding, flush the incision with isotonic saline, and suture the incision in layers.

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