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PALACOS® R pro is indicated for use in arthroplastic procedures of the hip, knee, and other joints for the fixation of polymer or metallic prosthetic implants to living bone.
PALACOS® R+G pro is indicated for use in the second stage revision for total joint arthroplasty after the initial infection has been cleared.
PALACOS® MV+G pro is indicated for use in the second stage revision for total joint arthroplasty after the initial infection has been cleared.

PALACOS® R pro is a standard-setting, high-viscosity, radiopaque, poly(methyl methacrylate)-based (PMMA) bone cement, pre-filled into a mixing and application system, suitable for use with or without vacuum (ready to mix). It contains the X-ray contrast medium zirconium dioxide. To improve visibility in the surgical field, it has been colored with chlorophyll-copper-complex (E141). The bone cement consists of two components and is prepared immediately before use by mixing the polymer powder (= powder) with the monomer liquid (= liquid). A ductile dough forms that sets within a few minutes.
PALACOS® R+G pro is a standard-setting, high-viscosity, radiopaque, poly(methyl methacrylate)-based (PMMA) bone cement, pre-filled into a mixing and application system, suitable for use with or without vacuum (ready to mix). It contains the aminoglycoside antibiotic gentamicin to protect the cured bone cement and contiguous tissue against colonization by bacteria that are sensitive to gentamicin. It contains the X-ray contrast medium dioxide. To improve visibility in the surgical field, it has been colored with chlorophyll-copper-complex (E141). The bone cement consists of two components and is prepared immediately before use by mixing the polymer powder (= powder) with the monomer liquid (= liquid). A ductile dough forms that sets within a few minutes.
PALACOS® MV+G pro is a standard-setting, medium viscosity, radiopaque, poly(methyl methacrylate)-based (PMMA) bone cement, pre-filled into a mixing and application system, suitable for use with or without vacuum (ready to mix). It contains the aminoglycoside antibiotic gentamicin to protect the cured bone cement and contiguous tissue against colonization by bacteria that are sensitive to gentamicin. It contains the X-ray contrast medium zirconium dioxide. To improve visibility in the surgical field, it has been colored with chlorophyll-copper-complex (E141). The bone cement consists of two components and is prepared immediately before use by mixing the polymer powder (= powder) with the monomer liquid). A ductile dough forms that sets within a few minutes.

This FDA 510(k) Premarket Notification is for PALACOS® R pro, PALACOS® R+G pro, and PALACOS® MV+G pro bone cements. It does not describe an AI/ML device, a clinical study with human readers, or a ground truth established by experts. Instead, it focuses on demonstrating substantial equivalence to previously cleared predicate devices through non-clinical performance testing.

Here's a breakdown based on the provided document:

1. A table of acceptance criteria and the reported device performance

The document does not present a formal table of acceptance criteria with reported numerical performance values in the way you might expect for an AI device (e.g., sensitivity, specificity, AUC). Instead, it states that the devices meet existing industry standards and guidance documents. The "acceptance criteria" are implied by adherence to these standards, and the "reported performance" is that the devices meet them.

• Concluded that possible transfer of leachables is low.
• Cytotoxicity test performed to support this conclusion.
• No negative impact estimated from changes. |
  | Mechanical & Functional | FDA Guidance document Class II Special Controls Guidance Document: Polymethylmethacrylate (PMMA) Bone Cement - Guidance for Industry and FDA (July 17, 2002) (Annex I and Annex II) | - Tests conducted to demonstrate intended function, safety, and effectiveness.
• Data provided to state substantial equivalence to predicate device. |
  | Sterilization | ISO 11135 | - Validation performed using ethylene oxide gassing.
• Cycle designed for sterile units with a sterility assurance level (SAL) of 10⁻⁶.
• Chosen sterilization process considered valid, showing equivalence to predicate device. |
  | Pyrogenicity | ANSI/AAMI ST72 (LAL test) | - Subject device meets endotoxin limit specification of ≤ 20 EU/device.
• Shows equivalence to predicate device. |

2. Sample size used for the test set and the data provenance (e.g., country of origin of the data, retrospective or prospective)

This document details non-clinical laboratory testing, not a test set of patient data. Therefore, the concepts of "sample size used for the test set" and "data provenance (country of origin, retrospective/prospective)" as they relate to patient data or imagery do not apply. The testing was conducted in a laboratory setting, likely in Germany where the manufacturer is located, or by authorized testing facilities.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

Not applicable. The ground truth for this type of device (bone cement) is not established by human experts in the context of medical image interpretation. The "truth" is determined by established physical, chemical, and biological testing standards and measurements.

4. Adjudication method (e.g., 2+1, 3+1, none) for the test set

Not applicable. There is no human adjudication process described, as the testing is based on objective laboratory measurements against defined standards.

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 is not an AI-assisted device.

6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done

Not applicable. This is not an algorithm.

7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.)

The "ground truth" for this submission is based on:

• Established objective standards: International Standards (e.g., ISO 10993-1, ISO 11135, ANSI/AAMI ST72) and FDA Guidance documents (e.g., "Class II Special Controls Guidance Document: Polymethylmethacrylate (PMMA) Bone Cement").
• Laboratory measurements: Results from specific tests (cytotoxicity, mechanical property measurements, sterility assurance level determination, LAL test for endotoxins) designed to objectively evaluate the device's conformance to these standards and demonstrate substantial equivalence to predicate devices.
• Chemical and material analysis: Confirmation of identical (or acceptably different) chemical composition and materials compared to predicate devices.

8. The sample size for the training set

Not applicable. This is not a machine learning device and therefore does not have a "training set" in that context.

9. How the ground truth for the training set was established

Not applicable. As above, there is no "training set" for this type of device.

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