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The Apex Knee™ System is intended for use as a primary or revision total knee replacement. This prosthesis may be used for the following conditions, as appropriate:

• · Non-inflammatory degenerative joint disease, including osteoarthritis and avascular necrosis;
• · Rheumatoid arthritis;
• · Correction of functional deformity:
• · Revision procedures where other treatments or devices have failed;
  The porous coated femoral component may be used cemented (biological fixation).
  The porous coated tibial baseplate is to be used uncemented (biological fixation).
  All other femoral, tibial baseplate, and patellar components are indicated for cemented use only.
  The Apex Knee™ Modular Tibial Augments are intended to the Tibia baseplate and cemented to the prepared tibia.

The proposed devices are intended to be used for primary and revision total knee replacement.
The Pegged Tibial Baseplates offer additional torsional stability by adding pegs to the posterior end of the device. The material of the proposed Pegged Tibial Baseplates are Cobalt Chrome, CoCr (ASTM F75).
The ECiMa tibial inserts are machined from compression molded highly crosslinked polyethylene with Vitamin E (VE-XLPE) and attaches to the cobalt chrome tibial baseplate via dovetails and a retaining

The provided text describes a 510(k) premarket notification for the "Apex Knee™ System," a knee joint prosthesis. However, the document does not include information about acceptance criteria or a study proving the device meets those criteria in the context of an AI-powered medical device.

The document is a submission for a physical medical device (a knee implant), not an AI device. Therefore, the questions related to AI device performance (e.g., number of experts for ground truth, MRMC studies, standalone algorithm performance, training set details) are not applicable to this document.

The document focuses on demonstrating substantial equivalence to a predicate device for a physical implant, primarily through material characterization, mechanical testing, and biocompatibility testing. The "acceptance criteria" discussed are mainly related to the performance standards for the implant materials and design, such as wear testing, strength testing, and sterility assurance levels.

Here's a breakdown of what is and is not in the provided text:

Information NOT Found (as it pertains to an AI device):

• 1. Table of acceptance criteria and reported device performance for an AI device: Not present. The acceptance criteria relate to mechanical and biological properties of the implant.
• 2. Sample size and data provenance for an AI test set: Not applicable. The "test set" refers to mechanical samples and animal models, not patient data for AI evaluation.
• 3. Number of experts and qualifications for AI ground truth: Not applicable. Ground truth for an AI device (e.g., image annotation) is not relevant here.
• 4. Adjudication method for an AI test set: Not applicable.
• 5. Multi-reader multi-case (MRMC) comparative effectiveness study for AI: Not applicable.
• 6. Standalone (algorithm only) performance for AI: Not applicable.
• 7. Type of ground truth for an AI device: Not applicable. Ground truth here refers to engineering specifications and biological response, not diagnostic labels for AI.
• 8. Sample size for an AI training set: Not applicable.
• 9. How ground truth for an AI training set was established: Not applicable.

What the document does provide regarding the physical device's "studies":

The document broadly mentions "non-clinical testing" conducted to demonstrate the safety and effectiveness and substantial equivalence of the modified Apex Knee™ System. These tests are the "study" proving the device meets its acceptance criteria (though not presented in the AI-specific format requested).

• Testing for Pegged Tibial Baseplates:
  • FEA (Finite Element Analysis) simulation
  • Peg location templating study
• Testing for ECiMa Tibial Inserts & Patellae:
  • Material characterization
  • PS (Posterior Stabilized) post strength testing
  • Insert disassembly strength testing
  • Wear testing
• Biocompatibility Testing for ECiMa material:
  • Intramuscular implantation in animal models
  • Implant toxicity and subcutaneous implantation in animal models
• Sterility: Validated sterilization process using ethylene oxide (EO) to a Sterility Assurance Level (SAL) of 10-6. Endotoxin testing via Limulus amebocyte lysate (LAL) on a quarterly rotating basis for product groups.

Conclusion:

This document is a regulatory submission for a physical knee implant and does not contain the specific information requested regarding AI device acceptance criteria and study methodologies. The "studies" mentioned are engineering and biological tests demonstrating the physical device's performance and safety.

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