Designed for you
by you!



Medacta’s core philosophy is based on the belief that innovation is the key to success. This leads to a constant effort towards the development of cutting edge solutions for Orthopaedics.
MyKnee is a patient-specific cutting block, allowing the surgeon to realize his pre-operative 3D planning, based on CT or MRI images of the patient’s knee.
This innovative concept combines different features giving potential benefits to both the surgeon and to the patient.

Accurate implant positioning.[4,5,6,7,12]
No intramedullary canal violation.[1,2]
Up to 60% reduction of surgical steps for bone resection and related time.*
Potentially one extra case per surgery session.[9]
Up to 66% reduction of time and cost in washing, assembling and sterilization procedures.[8,9]
Interactive 3D web planning.

*Data on file: Medacta

The MyKnee cutting blocks are made to accurately match the surgeon‘s preoperative planning, based on individual patient‘s anatomy and his mechanical axis:

  • Unmistakable positioning: The MyKnee guides are positioned on the bone referring to distinct references: the osteophytes.
  • Maximized visibility through the guides during both blocks positioning and resections.
  • Telescopic alignment rod:  The guides allow a drop rod to be connected, allowing you to validate intraoperatively the actual positioning and axial alignment of the blocks.

Less bleeding (adapted from 1)

Less haemoglobin loss (adapted from 1)

Less risk of emboli (adapted from 2)
Emboli distribution as a percentage of patients operated comparing using IntraMedullary jigs with not using IntraMedullary jigs.

Having less blood loss allows the hospital structure and patient to save money associated with transfusions.

Up to 60% reduction of surgical steps for bone resection and related time*

Only 3 surgical steps are needed using MyKnee cutting guides: fit – pin – cut, saving more than 20 steps.

Having a smaller number of surgical steps may reduce the overall surgical time, potentially adding one extra case per surgery session.[9]  
Moreover the patient may benefit:

  • Less exposure to the risk of infection.[3]
  • Less time under anaesthesia.
  • Less tourniquet time.

*Data on file: Medacta

Up to 66% reduction of time and cost in washing, assembling and sterilization procedures [8,9]

  • Only 2 MyKnee trays opened vs. 6 or more for a conventional TKR.
  • Specific implants ready in the operative room.
  • Less set-up time & turnover time.
  • Less risk of losing and damaging pieces.
  • Fewer cleaning requirements.
  • Improved overall operative room logistics and efficiency.
Designed by you!

The MyKnee preoperative planning is based on the surgeon‘s specific preferences and submitted to the surgeon
for approval through an interactive website available at


The user interface may change without notice.
The picture is only indicative and shows the information provided by the interactive website.


For every case the surgeon can modify all femur and tibia parameters such as femoral distal and anterior-posterior resection levels, femoral rotation, femoral flexion, femoral and tibial varus/valgus, tibial resection level and tibial slope.
The MyKnee team is always at surgeon‘s disposal and is pleased to collaborate.

Once approved by the surgeon, Medacta produces MyKnee cutting blocks using in house laser sintering technology.

The guides are then shipped to be setup for surgery.


It works! Proven accuracy and effectiveness of MyKnee
See Publication section to discover more.
Real Cutting Blocks, not only pin positioners

The bone resections are performed directly through the slots and all the checks can be done intraoperatively before pinning the cutting blocks.
CT or MRI based

Freedom to choose the preferred imaging technology.
Online case management

The MyKnee cases are managed entirely online, without the need of installing any software. The cases database is available to the surgeon at any time from everywhere and, moreover, the information on the website is always kept up-to-date.
Complete in house technology

The MyKnee process is entirely kept in house from the 3D anatomical reconstruction to the cutting blocks manufacturing, allowing a direct contact between the surgeon and his personal MyKnee technician.
Only 3 weeks lead time

The shortest delivery time in today‘s market for this technology.
A personal MyKnee technician just for you

Each surgeon is assigned a MyKnee technician who is his reference person for all questions and needs.




Medacta receives the CT or MRI images of the patient‘s leg.


Starting from the 3D reconstruction of the joint and following the surgeon preferences, the MyKnee preoperative planning is performed.


A virtual positioning of the implant is proposed to the surgeon who can modify the planning as he wishes.


Once the planning has been validated by the surgeon, the in-house manufacturing process starts.



Medacta's patient-matched instrument platform covers solutions for every surgical scenario, including partial, total, and revision knee replacements, and allows for many surgical approaches such as bone referencing, ligament balancing, and muscle reduction. CT- or MRI-based cutting guides, MRI-based pin positioning blocks for uni- and total-knee implants, and CT-based guides to revise failed total-knee implants are available to offer a wide range of options to every surgeon. For GMK Sphere, a dedicated Kinematic Alignment planning protocol, MyKnee KA, is available to supplement the traditional mechanical alignment principles.



The potential benefits of MyKnee technology can be further enhanced when used in conjunction with GMK Efficiency single use instruments
GMK Efficiency is a complete single use instrument solution used to implant GMK Sphere or GMK Primary total knee systems. 
It has been designed to optimize instrument management and logistics in the O.R. and throughout the hospital supply chain, providing benefits to every healthcare stakeholder. MyKnee and GMK Efficiency together offer an innovative and complete technological solution and deliver concrete benefits for the patient, surgeon and hospital.




Medacta offers you the opportunity to experience an anatomic knee replacement system with the enhanced accuracy and proven efficiency of a system specifically designed for each individual patient: this is the synergy between GMK system and MyKnee.




MySpine is a patient specific pedicle screw placement guide, allowing the surgeon to determine his pre-operative 3d planning, based on CT images of the patient’s spine. This innovative concept combines several different features to offer potential benefits to both the surgeon and the patient.

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MyShoulder is a patient-specific instrumentation, allowing the surgeon to realize his pre-operative 3D planning, based on CT images of the patient’s shoulder. The pre-operative 3D planning allows to manufacture an humeral resection guide and a glenoid positioning guide.This innovative concept combines different features giving potential benefits to both the surgeon and to the patient.

Read more



An advanced network of digital solutions designed to improve patient outcomes and healthcare efficiency



MyKnee Concept
[1] Kalairajah Y. et al. Blood loss after total knee replacement: effects of computer-assisted surgery. JBJS Br. 2005 - Nov;87(11):1480-2.
[2] Kalairajah Y, Cossey AJ, Verrall GM, Ludbrook G, Spriggins AJ. Are systemic emboli reduced in computer-assisted knee surgery?: A prospective, randomised, clinical trial. JBJS Br. 2006 Feb;88(2):198-202.
[3] Peersman G, Laskin R, Davis J, Peterson MGE, Richart T. Prolonged Operative Time Correlates with Increased Infection Rate after Total Knee Arthroplasty. Hospital for Special Surgery Journal 2006 - Feb;2(1):70-2.


It works! Published articles prove the accuracy and effectiveness of MyKnee

[4] Anderl W et al, CT-based patient-specific vs. conventional instrumentation: Early clinical outcome and radiological accuracy in primary TKA; Knee Surg Sports Traumatol Arthrosc. 2014. 
[5] Koch P, Müller D, Pisan M, Fucentese S, Radiographic accuracy in TKA with CT-based patient-specific cutting block technique, Knee Surg Sports Traumatol Arthrosc. 2013 Oct;21(10):2200-5.
[6] Leon V - Patient matched technology vs conventional instrumentation and CAS. Podium Presentation at the 6th M.O.R.E International symposium, Stresa, Italy, May 13-14, 2011.
[7] Baldo F, Boniforti B – Patient-specific cutting blocks for total knee arthroplasty: preoperative planning reliability. J Orthopaed Traumatol (2011) 12 (Suppl 1): S23-S88.
[8] Müller et al- CT based patient-specific cutting blocks for total knee arthroplasty: technique and preliminary radiological results. Podium Presentation at the 71st Annual Congress of the SSOT, Lausanne, Switzerland, June 22-24, 2011.
[9] Koch P et al- Guide de coupe sur mesure pour PTG : présentation de la technique opératoire et résultats radiologiques préliminaires. Podium Presentation at the 86th Annual Congress of the SOFCOT, Paris, France, November 7-11, 2011.
[10] Koch P - MyKnee System : A new vision in total knee replacement. Leading Opinions - Orthopädie & Rheumatologie 2, 2011: 32-35.
[11] Goldberg TD - MyKnee economical and clinical results. Podium Presentation at the 6th M.O.R.E International symposium, Stresa, Italy, May 13-14, 2011.
[12] Dussault M, Goldberg T, Greenhow R, Hampton D, Parry S, Slimack M - Preoperative planning accuracy of MyKnee system. M.O.R.E. Journal 2012; 2:22-25.

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