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TrueLok Elevate is intended for treatment of non-union or pseudoarthrosis of long bones and correction of bony or soft tissue defects or deformities. The TrueLok Elevate is indicated for adult and pediatric (greater than 2 through 21 years of age) patients.

The subject TrueLok Elevate is an external fixation component system (including its accessories) to be used with the Orthofix TrueLok family, for which Orthofix identified as a predicate device TrueLok Hexapod System (TL-HEX) V2.0 (K170650). The subject device consists in a further series of elements for external fixation added to the Orthofix TrueLok family with the aim of supporting the Orthofix TrueLok external fixator systems family falling within the indications for use of the more extensive, cleared indications for use of the chosen predicate device, for the specific use in bone transport treatment.
The subject TrueLok Elevate is intended for treatment of non-union or pseudoarthrosis of long bones and correction of bony or soft tissue defects or deformities.
The TrueLok Elevate is indicated for adult and pediatric (greater than 2 through 21 years of age) patients.
The subject device is constituted by an external fixator and related accessories (half pins, k-wires, drill positioning guide, template and template inserts and convenience kits).
The technique for the use of the subject device consists in fixing two half pins on the first cortical of the bone segment that the surgeon decided to transport, and two half pins on both cortexes of the bone.
The positioning of the half pins is driven by a template.
During the treatment, through the knob present on the device, the bone segment is gradually pulled outward by the patient/caregiver to laterally transport the bone segment.
The subject device, as the predicate, will be implanted only by Healthcare Professionals (HCP), with full awareness of the appropriate orthopedic procedures (including application and removal), in the operating theatre only. The distraction of the limb will be activated in home by the patient/caregiver or in clinic theatre by the HCP. Treatment activation for pediatric patients in the home environment may require the assistance of a caregiver.

The Orthofix TrueLok™ Elevate is an external fixation component system intended for the treatment of non-union or pseudoarthrosis of long bones and correction of bony or soft tissue defects or deformities in adult and pediatric patients (greater than 2 through 21 years of age).

Here's an analysis of the acceptance criteria and the study performed, based on the provided text:

1. Table of Acceptance Criteria and Reported Device Performance

The provided text does not explicitly state specific pass/fail acceptance criteria values for the mechanical tests conducted. Instead, it describes comparative testing against predicate or reference devices to demonstrate similarity in performance. The assessment for each technological characteristic indicates that "no different questions have been raised" or that the subject device's indications fall within the predicate's, suggesting that the goal was to demonstrate equivalence rather than meeting pre-defined numerical thresholds for acceptance.

2. Sample Size Used for the Test Set and Data Provenance

The document does not explicitly state the sample sizes used for the mechanical tests (e.g., number of external fixators or half pins tested).
The provenance of the data is not specified regarding country of origin or whether it was retrospective or prospective, as these were bench tests performed on devices rather than patient data.

3. Number of Experts Used to Establish Ground Truth and Their Qualifications

This information is not applicable to this type of submission. The ground truth for mechanical performance is established through standardized testing protocols (e.g., ASTM standards) and comparisons to previously cleared predicate devices, not through expert consensus on medical images or patient outcomes.

4. Adjudication Method for the Test Set

This information is not applicable to this type of submission as the mechanical tests are objectively measured, not subject to subjective interpretation requiring adjudication.

5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

An MRMC study was not performed. This type of study is typically relevant for AI/imaging devices where human reader performance is being evaluated with and without AI assistance. The TrueLok™ Elevate is a physical external fixation system.

6. Standalone (Algorithm Only) Performance Study

A standalone study was not performed, as the device is a physical medical device, not a software algorithm.

7. Type of Ground Truth Used

The ground truth used for demonstrating performance was based on objective mechanical measurements conducted in accordance with recognized industry standards (e.g., ASTM F1541-17) and comparisons to the established performance characteristics of legally marketed predicate devices. The "truth" is that the new device's mechanical properties fall within acceptable limits or are comparable to those of the predicate, as determined by these tests.

8. Sample Size for the Training Set

This information is not applicable. The TrueLok™ Elevate is a physical medical device, not a machine learning algorithm that requires a training set.

9. How the Ground Truth for the Training Set Was Established

This information is not applicable for the reasons stated in point 8.

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