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  1. Home
  2. Products
  3. ATTUNE™ Patient-Specific Alignment 

PATIENT-SPECIFIC TECHNIQUES

ATTUNE™ Patient-Specific Alignment 

PATIENT-SPECIFIC TECHNIQUES

ATTUNE™ Patient-Specific Alignment 

Used together, the ATTUNE™ Knee and Patient-Specific Alignment Techniques are designed to preserve the soft tissue envelope and reduce the requirement for soft tissue releases, helping to restore stable knee motion and improve patient satisfaction after total knee arthroplasty (TKA).

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IMAGES

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Key Resources

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VELYS™ Robotic Assisted Solution Femur First Approach Surgical Technique

View Guide PDF
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VELYS™ Robotic Assisted Solution Tibia First Approach Surgical Technique 

View Guide PDF
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Instructions for Use

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Patient-Specific Alignment

A UNIQUE APPROACH

What is Patient-Specific Alignment?

Patient Specific Alignment (PSA) is a surgical technique that, together with the ATTUNE™ Knee System, aims to restore natural knee function by preserving the soft tissue surrounding the knee joint during total knee arthroplasty.

Download the PSA Surgeon Brochure

Features and Benefits

cross-section of the knee with lines showing range of motion

Enhanced Biomechanical Function 

Patient-specific surgical techniques have been reported to achieve enhanced biomechanical function, improved soft tissue balance, more natural kinematics, and ultimately better patient outcomes.1,2 

x-ray image of knee with implant after total knee arthroplasty

Long-Term Implant Survivorship  

A combination of ATTUNE™ Knee and PSA aims to restore soft tissue function and natural kinematics. A study has indicated that a PSA-style technique has a survivorship of 97.5% at 10 years.3

person doing yoga pose

Improved Patient Satisfaction

The combination of the ATTUNE™ Knee and Patient-Specific Techniques is designed to preserve the soft tissue envelope, and reduce the requirement for soft tissue releases, helping to restore stable knee motion to help improve patient satisfaction.

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Mechanical Alignment (MA) vs. Patient Specific Alignment (PSA) 

While MA has been seen to generate excellent clinical outcomes… 

20%

20% of TKA patients are unhappy with MA.4

54%

Up to 54% of MA TKA patients have residual symptoms such as pain, swelling, and grinding.5

ATTUNE Patient-Specific Technique Image

RESTORING NATURAL KINEMATIC MOTION

PSA + ATTUNE™ Knee 

The native knee is seen to be stable medially, and roll back laterally, however free to move posteriorly on the medial side in high flexion.6

Multiple in vivo studies have demonstrated ATTUNE™ Knee to exhibit similar medial stability to native knee, also allowing the freedom to roll back in high flexion.7

Using PSA alignment in combination with the ATTUNE™ Knee allows surgeons to restore soft tissue function & native anatomy within tested boundaries. 

Learn More About the ATTUNE™ Knee

PSA Professional Education

Video 1 of 2

Watch Dr. Dalury perform a total knee procedure using the VELYS™ Robotic-Assisted Solution and the femur-first approach. This content is intended for Health Care Professionals in the United States.

More Videos

VELYS™ Robotic-Assisted Solution Total Knee Arthroplasty Procedure: Femur First Approach
Now Playing

VELYS™ Robotic-Assisted Solution Total Knee Arthroplasty Procedure: Femur First Approach

Watch Dr. Dalury perform a total knee procedure using the VELYS™ Robotic-Assisted Solution and the femur-first approach. This content is intended for Health Care Professionals in the United States.

17:17

Dr. Mark Clatworthy presents VELYS Robotic Assisted Solution Knee Surgery Tibia First: Patient Specific Alignment
Now Playing

Dr. Mark Clatworthy presents VELYS Robotic Assisted Solution Knee Surgery Tibia First: Patient Specific Alignment

12:07

Continue Learning at J&J Institute

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References

1. Kang KT, Koh YG, Nam JH, Kwon SK, Park KK. Kinematic Alignment in Cruciate Retaining Implants Improves the Biomechanical Function in Total Knee Arthroplasty during Gait and Deep Knee Bend. J Knee Surg. 2020 Mar;33(3):284-293
2. Dossett, et al. Is the Function of Kinematically Aligned TKA Better Than Mechanically Aligned TKA? Results of a Two-Year Randomized Control Trial. Bone Joint J. 2014 Jul;96-B(7):907-1
3. Howell S, et al Implant Survival and Function Ten Years After Kinematically Aligned Total Knee Arthroplasty: Journal of Arthroplasty (2018)
4. Gunaratne R, Pratt DN, Banda J, Fick DP, Khan RJK and Robertson BW (2017). Patient Dissatisfaction Following Total Knee Arthroplasty: A Systematic Review of the Literature. The Journal of Arthroplasty, 32(12), pp.3854–3860.
5. Parvizi J, Nunley RM, Berend KR, Lombardi AV, Ruh EL, Clohisy JC, Hamilton WG, Della Valle CJ and Barrack RL (2014). High Level of Residual Symptoms in Young Patients After Total Knee Arthroplasty. Clinical Orthopaedics & Related Research, 472(1), pp.133–137.
6. P. Johala,*, A. Williamsa, P. Wraggb, D. Hunta, W. GedroycbTibio-femoral movement in the living knee. A study of weight bearing and non-weight bearing knee kinematics using ‘interventional’ MRI. J Biomech.2005 Feb;38(2):269-76. 7. AdrijaSharma , Thomas K. Fehring, William L. Griffin , J. Bohannon Mason. In Vivo Kinematic Performance of Gradually Variable Radius PS Primary TKA J Arthroplasty.2020 Apr;35(4):1101-1108.

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