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The A-Wedge Anterior Interbody System is indicated for intervertebral body fusion procedures in skeletally mature patients with degenerative disc disease (DDD) of the lumbar spine at one or two contiguous levels from L2-S1. Degenerative disc disease is defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies. These DDD patients may have up to Grade 1 spondylolisthesis or retrolisthesis at the involved level(s). A-Wedge Anterior Interbody System implants are to be used with autogenous bone graft and implanted via an anterior, lateral or anterolateral approach. A-Wedge Anterior Interbody System implants are to be used with supplemental fixation. Patients should have at least six (6) months of non-operative treatment prior to treatment with an intervertebral cage. Patients with previous non-fusion spinal surgery at involved level may be treated with the device.

The A-Wedge Anterior Interbody System (A-Wedge AIS) was developed for the stabilization of the lumbar spinal column. The body of the device is a rounded-trapezoidal shape with two large windows allowing placement of bone graft and facilitating fusion. The superior and inferior surfaces of the devices have a pattern of teeth to provide increased stability and inhibit movement of the implants. A-Wedge AIS implants are available in two lordotic configurations (6° and 11°) of various heights to restore lumbar lordosis and the associated sagittal balance. SMG A.I.S. implants have three titanium alloy x-ray markers. The A-Wedge AIS device is single-use only. Materials: Medical grade PEEK (ASTM F2026) machined from Orthoplastics Vertepeek extruded bar stock (FDA master file MAF #1820). Orthoplastics Vertepeek is fabricated from Evonik Degussa medical grade Vestakeep | PEEK granules (FDA master file MAF # 1688). ELI grade titanium alloy (Ti-6Al-4V per ASTM F136) for radio opaque markers. Function: A-Wedge AIS devices are used to maintain disc space distraction in skeletally mature adults requiring intervertebral body fusion.