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The SIros-X System is intended for sacroiliac joint fusion in skeletally mature patients for the following conditions:
• Sacroiliac joint dysfunction that is a direct result of sacroiliac joint disruption and degenerative sacroiliitis. This includes conditions whose symptoms began during pregnancy or in the peripartum period and have persisted postpartum for more than 6 months.
• To augment immobilization and stabilization of the sacroiliac joint in patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar fusion.
• Acute, non-acute, and non-traumatic fractures involving the sacroiliac joint.

When connected to the TiLock2 Spinal System, the SIros-X System is intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to thoracolumbosacral fusion for the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine:
• Degenerative disc disease (DDD) as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies
• Spondylolisthesis
• Trauma (i.e., fracture or dislocation)
• Spinal stenosis
• Deformities or curvatures (i.e., scoliosis, kyphosis, and/or lordosis)
• Spinal tumor
• Pseudarthrosis
• Failed previous fusion

When connected to the TiLock2 Spinal System, the SIros-X System is intended to provide immobilization and stabilization of spinal segments in skeletally immature patients as an adjunct to thoracolumbar fusion for the treatment of progressive spinal deformities (i.e., scoliosis, kyphosis, or lordosis) including idiopathic scoliosis, neuromuscular scoliosis, and congenital scoliosis, as well as the following conditions: spondylolisthesis/spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. These devices are to be used with autograft and/or allograft. Pediatric pedicle screw fixation is limited to a posterior approach.

The SIros-X Navigation instruments are intended to be used with the SIros-X System to assist the surgeon in precisely locating anatomical structures in SIros-X System procedures, in which the use of stereotactic surgery may be appropriate, and where reference to a rigid anatomical structure, such as the pelvis or vertebra, can be identified relative to the acquired image (CT, MR, 2D fluoroscopic image or 3D fluoroscopic image reconstruction) and/or an image data-based model of the anatomy. The SIros-X Navigation instruments are intended to be used with the Medtronic StealthStation System.

The SIros-X System is comprised of cannulated screws of various lengths, diameters, and configurations as well as system specific instruments. Instruments are offered to support open and minimally invasive placement of the SIros-X screws.

The SIros-X System is intended to provide fusion of the sacroiliac joint when multiple SIros-X screws traverse the SI joint. In addition, screws with tulips are intended to provide fixation to the pelvis when used with multi-level pedicle screw constructs that terminate in the lumbosacral spine.

The SIros-X System navigation instruments are offered to assist the surgeon in precisely locating anatomical structures in SIros-X System procedures in which the use of stereotactic surgery may be appropriate, and where reference to a rigid anatomical structure, such as the pelvis or vertebra, can be identified relative to the acquired image (CT, MR, 2D fluoroscopic image or 3D fluoroscopic image reconstruction) and/or an image data-based model of the anatomy.

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