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The PROFEMUR® RENAISSANCE® Classic Stems are indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

1. non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, and painful hip dysplasia;
2. inflammatory degenerative joint disease such as rheumatoid arthritis;
3. correction of functional deformity; and,
4. revision procedures where other treatments or devices have failed.
   The PROFEMUR® RENAISSANCE® Classic Stems are single use components, intended for use in conjunction with associated ceramic or metal femoral heads as part of uncemented total hip arthroplasty.

The PROFEMUR® RENAISSANCE® Classic Stems are monolithic stems manufactured from a forged titanium alloy (ASTM F620) and designed for use in uncemented total hip arthroplasty. The PROFEMUR® RENAISSANCE® Classic Stems offer both reduced flare stems (7 sizes, 10-16), and standard flare stems (9 sizes, 10 - 18) and are coated with titanium plasma spray conforming to ASTM F1580. The subject device offers two neck offset options, Standard (neutral) and Extended (varus), as well as two proximal flare options, Standard and Reduced. The stem geometry, neck length, and neck offset are designed to create options identical to those available with the predicate modular device. The subject devices feature one minor additional change in that they have an impaction slot that is oriented 90 degrees from the impaction feature of the predicate device.

This document describes a 510(k) submission for the PROFEMUR® RENAISSANCE® Classic Stems. The provided text is a summary for a medical device and does not pertain to an AI device or a study involving human readers or AI assistance. Therefore, many of the requested categories are not applicable.

Here's an analysis of the provided information, focusing on the available details from a medical device submission rather than an AI study:

1. Table of Acceptance Criteria and Reported Device Performance

The device is a medical implant (femoral hip stem), and its performance is evaluated through mechanical testing, not through metrics like sensitivity, specificity, or AUC typically used for AI diagnostics.

2. Sample size used for the test set and the data provenance

• Sample Size for Test Set: Not specified in terms of number of devices tested, but the tests were mechanical fatigue and range of motion tests on the physical device. This is not a "test set" in the context of AI or clinical studies with patient data.
• Data Provenance: The data comes from nonclinical laboratory testing of the device itself (mechanical tests). There is no patient data or geographical provenance described.

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

Not applicable. Ground truth for mechanical tests is established by meeting predefined engineering specifications and international standards (e.g., ISO). There are no "experts" establishing ground truth in the sense of medical diagnoses or image interpretations.

4. Adjudication method for the test set

Not applicable. This concept pertains to methods for resolving discrepancies in expert opinions, which isn't relevant for mechanical testing.

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 device, and no MRMC study was conducted.

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

Not applicable. This is not an AI device.

7. The type of ground truth used

For mechanical testing, the "ground truth" is defined by compliance with established international standards (ISO 7206-4, 6, 8, and 21535) and internal company specifications for material properties and design.

8. The sample size for the training set

Not applicable. This is not an AI device.

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

Not applicable. This is not an AI device.

Summary of the Study:

The study conducted was a series of nonclinical mechanical tests designed to demonstrate the safety and effectiveness of the PROFEMUR® RENAISSANCE® Classic Stems. These tests were performed on the device itself and were in accordance with recognized international standards for orthopedic implants (ISO 7206 and ISO 21535). The key finding was that the device satisfied the acceptance criteria for all specified tests, including proximal and distal fatigue and range of motion. The titanium plasma spray coating was also confirmed to be identical to that of the predicate device and applied according to specifications. No clinical data was provided. The submission states that the device's substantial equivalence is supported by the nonclinical testing data, materials information, and design features being similar to predicate devices.

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