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MARVEL™ Growing Rods are indicated in patients under 10 years of age with potential for additional spine growth who require surgical treatment to obtain and maintain correction of severe, progressive, life threatening, early onset spinal deformities associated with thoracic insufficiency, including early onset scoliosis, as part of a growing rod construct.

MARVEL™ Growing Rods are posterior stabilization rods that can be surgically lengthened by manual mechanical actuation on a periodic basis as the patient grows. These rods are used as part of a growing rod construct consisting of MARVEL™ rods and screws, and are limited to a posterior approach. The rods include a tapered distal tip for a minimally invasive surgical approach. MARVEL ™ Growing Rods are manufactured from titanium alloy and PEEK.

The provided text describes a medical device submission (K213196) for MARVEL™ Growing Rods. This document is a 510(k) summary, which focuses on demonstrating substantial equivalence to predicate devices rather than providing detailed acceptance criteria and study results in the format you requested for an AI/algorithm-based device.

Therefore, the information required to answer your specific questions about acceptance criteria, study data, ground truth, and expert involvement for an AI medical device cannot be found in this document.

This document describes a physical medical device (growing rods for spinal deformities) and primarily relies on mechanical performance testing and material biocompatibility to demonstrate substantial equivalence, not the performance of an AI algorithm.

To explicitly answer your points:

1. A table of acceptance criteria and the reported device performance: Not applicable. The document describes mechanical performance tests (static and dynamic compression bending, static component torsion) in accordance with ASTM F1717 and ASTM F543, and bacterial endotoxin testing (BET) per ANSI/AAMI ST-72:2011. It states "Performance data demonstrate substantial equivalence to the predicate devices" but does not provide specific numerical acceptance criteria or reported performance values for these tests.
2. Sample size used for the test set and the data provenance: Not applicable. This refers to mechanical testing of physical rods, not a test set for an algorithm.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not applicable. Ground truth and expert review are not relevant for the mechanical testing of a physical device.
4. Adjudication method: Not applicable.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance: Not applicable. This device is not an AI diagnostic or assistance tool.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Not applicable.
7. The type of ground truth used: Not applicable.
8. The sample size for the training set: Not applicable.
9. How the ground truth for the training set was established: Not applicable.

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FORTIFY® and FORTIFY® Integrated Corpectomy Spacers are vertebral body replacement devices intended for use in the thoracolumbar spine (T1-L5). FORTIFY® Spacers (titanium) are also intended for use in the cervical spine (C2-T1). All FORTIFY® TPS coated spacers are indicated for the same use as non-coated PEEK versions.

When used in the cervical spine (C2-T1), FORTIFY® devices (titanium) are intended for use in skeletally mature patients to replace a diseased or damaged vertebral body caused by tumor fracture or osteomyelitis, or for reconstruction following corpectomy performed to achieve decompression of the spinal tissues in cervical degenerative disorders. These spacers are intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage turnors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion, with bone graft used at the surgeon's discretion.

When used in the thoracolumbar spine (T1-L5), FORTIFY® Integrated devices are intended for use to replace a collapsed, damaged, or unstable vertebral body due to turnor or trauma (i.e., fracture). These spacers are designed to provide anterior spinal column support even in the absence of fusion for a prolonged period.

The interior of the spacers can be packed with autograft or allogenic bone graft comprising cancellous and/or corticocancellous bone graft as an adjunct to fusion.

These devices are intended to be used with FDA-cleared supplemental spinal fixation systems that have been labeled for use in the cervical, thoracic, and/or lumbar spine (i.e., posterior screw and rod systems, and anterior screw and rod systems). When used at more than two levels, supplemental fixation should include posterior fixation.

FORTIFY® Corpectomy Spacers are vertebral body replacement devices used to provide structural stability in skeletally mature individuals following corpectomy or vertebrectomy. The spacers include a central core and endplates, which are available in a range of sizes and options to accommodate the anatomical needs of a wide variety of patients. The core and the endplates can be preoperatively or intraoperatively assembled to best fit individual requirements. Each spacer has an axial hole to allow autogenous bone graft or allograft comprised of cancellous or corticocancellous bone graft to be packed inside of the spacer. Protrusions (teeth) on the superior and inferior surface grips the endplate of the adjacent vertebrae to resist expulsion. FORTIFY® Variable Angle endplates provide adjustable lordosis/kyphosis.

The provided text is a 510(k) summary for a medical device called "FORTIFY® Corpectomy Spacers." This document is focused on demonstrating the substantial equivalence of a new version of the device (with variable angle endplates) to previously cleared predicate devices.

It's crucial to understand that a 510(k) submission for a spinal implant device like this is primarily based on demonstrating mechanical and material equivalence to a predicate device, not on clinical performance metrics or AI algorithm validation. The questions you've asked (about acceptance criteria, AI performance studies, sample sizes for test/training sets, expert ground truth establishment, MRMC studies, etc.) are typical for the validation of Artificial Intelligence/Machine Learning (AI/ML) based medical devices, especially those involved in image analysis or diagnostic support.

Therefore, based on the provided text, I cannot answer your specific questions related to AI/ML device validation. The information provided by the FDA for this particular 510(k) focuses on the mechanical and material aspects of the physical implant.

Here's a breakdown of why your specific questions cannot be answered from this document:

• No AI Component: The device described, FORTIFY® Corpectomy Spacers, is a physical spinal implant. It does not appear to involve any AI/ML components for image analysis, diagnosis, or treatment planning.
• Performance Data Type: The "Performance Data" section explicitly states: "Mechanical testing (static and dynamic compression, static and dynamic torsion, and expulsion) was conducted in accordance with ASTM F2077 and 'Guidance for Industry and FDA Staff, Guidance for Spinal System 510(k)s', May 3, 2004. Performance data demonstrate substantial equivalence to the predicate device. Bacterial endotoxin testing (BET) was conducted in accordance with ANSI/AAMI ST-72:2011." This confirms the performance data is related to the physical properties and biocompatibility of the implant, not to the performance of an AI algorithm.
• Focus on Substantial Equivalence: The entire submission's purpose is to show "substantial equivalence" to existing physical devices, meaning it works similarly, has similar indications, and performs mechanically as well as the predicate. This is a common pathway for new versions of existing medical devices and does not typically involve clinical trials or AI validation studies.

In summary, the provided document is for a traditional physical medical device and therefore does not contain the information requested about AI acceptance criteria and validation studies.

If you have a document describing an AI/ML medical device, please provide that, and I would be able to address your questions.

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The SP-Fix® Spinous Process Fixation Plate is a posterior non-pedicle supplemental fixation device, intended for use at a single level in the non-cervical spine (T1-S1). It is intended for plate fixation/attachment to the spinous processes for the purpose of achieving supplemental fusion in the following conditions: 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), and/or tumor. The SP-Fix® Spinous Process Fixation Plate is intended for use with allograft or autograft bone and is not intended for stand-alone use.

The RELIEVE® Laminoplasty Fixation System is intended for use in the lower cervical and upper thoracic spine (C3-T3) in laminoplasty procedures. The RELIEVE® Laminoplasty Fixation System is used to hold the allograft or autograft bone in place in order to prevent the graft from expulsion, or impinging the spinal cord.

SP-Fix®: The SP-Fix® Spinous Process Fixation Plate consists of plates, rods and barrels that are used to build a construct to provide supplemental stabilization of spinal segments to support fusion. The components are available in a range of sizes to fit the anatomical needs of a variety of patients.

RELIEVE®: The RELIEVE® Laminoplasty Fixation System consists of spinal fixation plates and screws for use in laminoplasty procedures. RELIEVE® implants are inserted through a posterior cervical or thoracic approach, and are available in various sizes and geometric options to fit individual patient anatomy. Plates may be filled with bone graft material. Screws are used to attach the plates to bone and are available in a variety of lengths and diameters to fit patient anatomy.

The provided document is a 510(k) premarket notification from the FDA for two medical devices: the SP-Fix® Spinous Process Fixation Plate and the RELIEVE® Laminoplasty Fixation System. It confirms that the FDA has reviewed the submission and determined that the devices are substantially equivalent to legally marketed predicate devices.

However, this document does NOT contain information related to the acceptance criteria and the study that proves a device meets given acceptance criteria. Specifically, it lacks:

• A table of acceptance criteria and reported device performance.
• Details on sample size, data provenance, expert involvement for ground truth, adjudication methods, or MRMC studies for a test set.
• Information on standalone algorithm performance.
• Type of ground truth used.
• Sample size for and establishment of ground truth for a training set.

The document states under "Performance Data":

"Globus is not aware of any performance standards or special control as established to date for the above device or product code. Testing was conducted in accordance with the "Guidance for Industry and FDA Staff, Guidance for Spinal System 510(k)s", May 3, 2004. Static and Dynamic Compression and Static Cantilever Bending testing performed on the RELIEVE® plates demonstrates substantial equivalence to the predicate devices. No additional mechanical testing for SP-Fix® plates was performed."

This indicates that mechanical testing was performed to demonstrate substantial equivalence to predicate devices, rather than to meet specific performance acceptance criteria for a new, AI-based device. The context of your request (acceptance criteria, test/training sets, ground truth, experts, MRMC, etc.) strongly suggests an AI/ML medical device, which is not what this FDA submission describes.

Therefore, I cannot fulfill your request using the provided text because the document does not discuss the kind of performance studies (e.g., involving AI/ML, human readers, or specific diagnostic accuracy metrics) that your detailed questions pertain to.

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