No further correlations were seen between HO formation and fat depth, blood loss, instrumentation, fixation methods or prosthesis material.
Achieving arthrodesis using autogenous bone graft is inconsistent when rigid internal fixation such as transpedicular instrumentation is applied.
The addition of posterior instrumentation after anterior fixation has been shown to increase the overall stiffness of fused segments and decrease the likelihood of instrumentation failure.
These clinical findings support published studies indicating that alignment accuracy improves with Patient Specific Instrumentation, and cementless fixation with tantalum porous metal-to-bone surface engagement is more stable than porous-coated or cemented implants.
These two separated fragments were fixed into one integral structure by the instrumentation of the fixation devices (plate and screws).
Pedicle screws provide three-column fixation, allowing shorter segment of instrumentation to be used to restore sagittal alignment.
Bilateral pedicle screw constructs are the standard for instrumentation, providing rigid fixation and increased fusion rates [ 7, 8].
While many studies have examined the biomechanics of a range of instrumentation for spinal fixation, these studies limit their focus to corpectomy surgical models [ 5- 8].
Although LS instrumentation provides stronger fixation and superior spinal canal correction, it results in increased vertebral immobility, as it affects more segments.
With improvement in the design of pedicle screws and progress in pedicle screw fixation technique, short-segment pedicle instrumentation (SSPI) has achieved satisfactory curative results in patients of thoracolumbar fractures [ 3, 4].
The ISD is intended to replace the standard pedicle screw instrumentation used for posterior fixation.
