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The Apelo™ Pedicle Screw System is intended for noncervical pedicle fixation in skeletally mature patients as an adjunct to fusion for the following indications: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e., fracture or dislocation); spinal stenosis; curvatures (i.e., scoliosis, kyphosis, and/or lordosis); tumor; pseudarthrosis; and failed previous fusion.

Being proposed in this Special 510(k) is the introduction of line extensions to the existing Apelo™ Pedicle Screw System. The proposed line extensions consist of new sizes of solid monoaxial and polyaxial pedicle screws and cannulated monoaxial and polyaxial pedicle screws without fenestrations. The new design and sizes of pedicle screws will be offered in order to provide surgeons a variety of screws from which to choose for open and minimally invasive procedures based on patients' anatomies.

The provided text describes a Special 510(k) Premarket Notification for the Apelo™ Pedicle Screw System, which is a medical device. This document does NOT contain information about acceptance criteria or a study proving that the device meets those criteria in the context of an AI/machine learning application.

Instead, this document describes a traditional medical device submission to the FDA, focusing on:

• Substantial Equivalence: The primary objective of a 510(k) submission is to demonstrate that a new device is substantially equivalent to a legally marketed predicate device, meaning it has the same intended use and either the same technological characteristics or different technological characteristics that do not raise new questions of safety and effectiveness.
• Device Modification (Line Extension): The specific purpose of this Special 510(k) is to introduce new sizes of solid and cannulated pedicle screws as line extensions to an existing system.
• Mechanical Testing: The document mentions "Dynamic compression bending testing according to ASTM F1717" was conducted to show that the proposed screws do not create a new worst-case construct. This is a standard engineering test for spinal fixation devices to assess their mechanical performance and safety, not a clinical study involving human or AI performance.

Therefore, I cannot extract the requested information (acceptance criteria, device performance tables, sample sizes for test/training sets, ground truth details, expert qualifications, MRMC studies, standalone studies, etc.) because this document pertains to a mechanical device submission, not an AI-powered device or software as a medical device (SaMD). The concepts of "acceptance criteria" and "study" in this context refer to engineering specifications and mechanical tests, not statistical performance metrics for an algorithm.

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