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The EARP Interbody System is intervertebral body fusion in the lumbar spine in skeletally mature patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 to S1 of the lumbosacral spine. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radios. These patients should have had six months of non-operative treatment with an intervertebral cage. DDD patients may also have Grade 1 spondylolisthesis at involved levels. The device system must be used with supplemental fixation and autograft to facilitate fusion and is implanted via a posterolateral approach.

EARP implants are intervertebral body fusion devices used in the lumbar spine following discectomy. All devices are manufactured from PEEK Optima LT1 per ASTM F2026 and include tantalum markers per ASTM F560 for radiographic visualization. The devices have multiple footprints to adapt to the general shape of the vertebral endplates and have a hollow center to accommodate bone graft. Each footprint is available in multiple heights to accommodate patient variability and there are anti-migration features on the superior and inferior surfaces designed to improve fixation, stability, and prevent back out and migration.

This document is not about an AI or software device. It describes the EARP Interbody System, a medical implant used for spinal fusion. Therefore, the requested information regarding acceptance criteria and studies that prove the device meets them, especially in the context of AI/software performance, human reader improvement, and ground truth establishment, is not applicable.

The document primarily focuses on the device's mechanical performance and substantial equivalence to previously cleared predicate devices, as demonstrated through engineering analysis and comparison of technological characteristics.

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