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Pheno4U® TKA - Level 1*
Times are changing, our thinking is changing, capabilities are changing - and so are our actions. Providing additional information on the individual anatomy, the Pheno4U® Level 1* software takes navigated TKA to the next level. Surgeon and patient benefit from a more individualized and data-driven workflow in the operating room - with sophisticated safety options for a better load distribution to the implants.
Personalized treatment
When performing a total knee replacement, surgeons should recognize the consequences of changing the patient‘s presurgical limb and femoral phenotype by two or more categories. Using navigation to align the lower limb in TKA is worth considering the setting of alignment targets that avoid a phenotype change of more than one category1.
Pheno4U® TKA Level 1* supports your treatment with biomechanical information and takes into account additional patient-individual parameters. For a more precise planning and an individual workflow during surgery.
Based on the data input, the individual case is automatically categorized according to the Coronal Plane Alignment of the Knee (CPAK) classification which can be used to identify the patients who would benefit most from kinematic alignment 2.
Taking into account the patient‘s unique anatomy and individuality, our new software provides different alignment options on the planning screen. Beyond the standard mechanical alignment another two operating techniques can be chosen: kinematic and restricted kinematic alignment.
Especially important in unrestricted kinematic alignment. The indicated load corridor helps to prevent overloading the implants beyond limits resulting in a potentially earlier revision.
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Mechanical alignment for tibia resection with new design and load corridor.
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Maximum medial and lateral contact stress to reduce implant wear and improve longevity of the implant is shown besides pure frontal and sagittal moments to avoid implant loosening.
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Additional safety
With our new software we offer more safety: The provided biomechanical information leads to better support during implant positioning, computer assisted by Orthopilot® navigation system. The safety corridor, also called biomechanical load corridor, is aiming for the best individual combination between patient and implant. It monitors the current planning situation in terms of multiplanar frontal and sagittal moments, as well as medio-lateral load conditions. Besides that, it takes into account the intended alignment strategy, implant size and patient individual parameters.
The load corridor indicates in this Kinematic Alignment planning, that frontal orientation of the femur in 2° Varus and the tibia in 5° Varus is out of the safe range (red).
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The corridor indicates if the chosen angles of femur in relation to tibia are:
in regard to contact stress moments.
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Indication in red if maximum medial or lateral contact tension would be exceeded at only one point during walking gait cycle, respectively in yellow (limit) and green (safe zone).
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The visualisation of the safety corridor helps to evaluate the position for better load distribution across the implant components and acts as an assistant that alerts if the load limit reaches the permitted threshold area. The orientation of the components has never been so easy.
By finding the correct position, the pressure on the implant can be reduced. A perfect move in terms of longevity of the implant component. In this example, the frontal and sagittal moment as well as maximum medial and lateral contact stress (pressure) during walking were simulated. Important data for the safety corridor calculation.
Benefit from a data-based approach
OrthoPilot® Elite TKA Level 1* is part of our Pheno4U® patient treatment concept. Supporting the intraoperative phase with our new navigation software leads to the proper execution of the defined learning effect. The more data collected the higher the value of the software: it delivers new insights and learnings in order to improve clinical results, to increase patient satisfaction and to detect time and resource consuming inefficiencies. This way the whole field of TKA can be revolutionized.
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