SpineJack® system controlled anatomical restoration

According to the AO principles of fracture management, the fracture of a weight-bearing joint is first reduced then stabilized using fixation.1 The concept of the SpineJack® system is to allow controlled anatomical restoration in order to facilitate early mobilization and weight-bearing.

Anatomical restoration consists of achieving sagittal and coronal balance. These are key factors for kyphosis management and reduction of adjacent level fractures.2-7

Vertebral endplate restoration has been described as having a positive influence on disc creeping, disc degeneration, compensatory curvatures or facet joint arthritis

Studies have shown a correlation between vertebral deformation and clinical problems such as post-traumatic kyphosis, which has been depicted as a serious post-traumatic deformity.3,13

EU indication:
The SpineJack® system is indicated for use in the reduction of mobile spinal fractures that may result from osteoporosis, trauma (fractures types A according to the Magerl classification), and malignant lesions (myeloma or osteolytic metastasis).

The SpineJack® system is intended to be used in combination with validated bone cement, and to be placed, using a transpedicular approach, through a vertebra pedicle with a minimum internal diameter (see the Specifications section of the IFU), as verified with a preoperative CT scan.

US indication:
The SpineJack® Expansion Kit is indicated for use in the reduction of painful osteoporotic vertebral compression fractures and traumatic vertebral compression fractures (type A fractures according to the AO/Magerl classification) with or without posterior instrumental fixation. It is intended to be used in combination with Stryker VertaPlex® radiopaque bone cement and VertaPlex® HV radiopaque bone cement.

Refer to IFU for complete instructions and warnings and precautions applicable for devices.

A continuum in control

Implant positioning

Controlled by specific instrumentation

Implant positioning in both sagittal and transverse planes can help achieve the appropriate fit for the fracture’s shape and the patient’s anatomy.

Implant expansion

Controlled by millimetric implants expansion

Millimetric expansion of the implant can be maintained until the bone cement is injected.

PMMA cement positioning and interdigitation

Controlled by PMMA cement fixed pathway

Fixed pathway for the insertion of PMMA cement through the implant helps minimize the possibility of posterior cement spread and risk of leakage into the spinal canal.14

By optimizing PMMA cement positioning and interdigitation, the SpineJack® system provides controlled craniocaudal expansion for anatomical restoration to allow for better functional recovery of the injured disc.15-17

Procedure step by step

1. 11G access cannula

Insert the 11G access cannula through the pedicle into the posterior one-third of the vertebral body.

2. Guidewire

Insert the guidewire through the 11G access cannula halfway into the vertebral body, then, remove the tube portion of the 11G access cannula.

3. Reamer

Drill into the posterior one-third of the vertebral body. Remove the guidewire. Continue to drill until the desired position of the implant is reached.

4. Template

Clean the implant site with the template.

5. Unexpanded

Two SpineJack® implants are placed into the vertebral body.

6. SpineJack® expanded (no cement)

The SpineJack® implants are expanded to help reducing the fracture and restore the anatomy.

7. SpineJack® expanded (with cement)

Cement is injected to stabilize the fracture.