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- EXCEL MPK
EXCEL MPK
EXCEL MEDIAL PIVOT KNEE SYSTEM
Kinematics Redefined
Restoring the Kinematics of a Natural Knee
- Medial Pivot implants are designed to restore the physiological kinematics of the natural knee, confining the rollback and avoiding the paradoxical motion of the femoral condyles.
- Designed to bring patients back to full function faster. It can safely accommodate flexion of up to 155°
- Anatomic Insert Designed To Promote Medial Stability And Lateral Mobility
- The keel of the Excel MPK tibial implant has been designed to fit the natural anatomy of the tibia and provides maximum rotational stability
- Does not require a large intercondylar resection
- Allows 15° of natural rotation for deep flexion
- Allows freedom of rotational alignment
Patella
Patella UHMWPE from Orthoplastics (UK)
- Dome shaped
- 3 pegs and cement pockets for optimum fixation
- Available in 6 sizes
Femoral Component
Single radius arc to provide better anteroposterior stability through a single radius of curvature from 0° to 115°, optimized radius of curvature in posterior condyle with reduced radius of curvature for deep flexion without impinging poly insert.
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Tibial Insert
The insert has been designed with a deep recess to the patellar groove for patellar tendon relief, a raised anterior medial lip to provide medial stability, and a lateral condyle arcuate path for natural knee function, facilitating the rotation of the lateral condyle about the medial condyle, thus providing natural knee kinematics. The smooth posterior chamfer of the poly insert prevents vital soft tissue impingement. The Medial side acts as a partial “Ball and Socket Joint”, providing no paradoxical motion and addressing mid-flexion to high flexion instability.
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Tibial Tray
The proven dovetail locking and continuous peripheral rim mechanism help minimize the micro motion anteroposterior and mediolateral, leading to minimum backside wear.
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Excel Medial Pivot Product
| STUDY NAME | TYPE OF STUDY | TOTAL PATIENTS | STATUS |
|---|---|---|---|
| Medial Pivot with Kinematic Alignment Study | Retrospective Study | 52 | In Process for Publication |
| Cruciate retaining Medial Pivot study | Retrospective Study | 555+ | Ongoing Recruitment |
| Robotic Medial Pivot Joint Study | Retrospective Study | 253+ | Ongoing Recruitment |
| Saviour Hospital Excel MPK Study | Retrospective Study | 252+ | Under Publication |
Medial Pivot with Kinematic Alignment Study
The medial-pivot knee is designed to more closely replicate the kinematics of the native knee. Kinematic alignment is an emerging alignment philosophy that aims to restore the patient’s native anatomy and joint-line orientation while minimizing the need for soft-tissue releases. Combining these two approaches may provide a more physiological reconstruction of the knee and potentially improve postoperative function and patient satisfaction. This study aims to evaluate the clinical and functional outcomes of medial-pivot total knee arthroplasty performed using a kinematic alignment technique.
Cruciate-Retaining Medial-Pivot Knee Study
The cruciate-retaining medial-pivot knee is designed to preserve the native posterior cruciate ligament while incorporating a medial-pivot geometry intended to replicate the natural kinematics of the knee. Preservation of the posterior cruciate ligament, together with the inherent stability of the medial-pivot design, may provide a more physiological pattern of knee motion while maintaining satisfactory stability and function. This study aims to evaluate the clinical and functional outcomes of cruciate-retaining medial-pivot total knee arthroplasty at one year following surgery
Robotic Medial-Pivot Knee Study
The medial-pivot knee is designed to replicate the physiological kinematics of the native knee, with enhanced medial compartment stability and controlled lateral compartment motion. Robotic-assisted surgery may facilitate accurate bone preparation, component positioning, and alignment, potentially improving the reproducibility of medial-pivot knee implantation. This study aims to evaluate the clinical and functional outcomes of robotic-assisted medial-pivot total knee arthroplasty using the Cuvis Joint Robot for implantation of the Excel Medial-Pivot Knee (MPK) at one year following surgery
Saviour Hospital Excel Medial-Pivot Knee Registry
The Excel Medial-Pivot Knee (MPK) is designed to replicate the physiological kinematics of the native knee and provide enhanced medial compartment stability during knee motion. This registry is intended to prospectively collect clinical, functional, and patient-reported outcomes of patients undergoing Excel MPK total knee arthroplasty at Saviour Hospital. The registry will provide real-world evidence on the safety, clinical performance, functional outcomes, and survivorship of the Excel MPK over short- and long-term follow-up
Frequently Asked Questions
What are the design advantages of the Excel MPK Medial Pivot Knee System?
The Excel MPK is designed to replicate natural knee kinematics through a medial pivot philosophy. It features an anatomical insert for medial stability and lateral mobility, a single-radius femoral design for improved stability, a tibial keel for rotational stability, and allows up to 155° flexion with 15° of natural rotation while preserving bone by avoiding extensive intercondylar resection.
What surgical technique is used for Excel MPK implantation?
The Excel MPK is implanted using a standard total knee arthroplasty technique with dedicated instrumentation. The procedure includes bone preparation, femoral and tibial alignment, soft-tissue balancing, trial reduction, implant positioning, and final implantation.
How does the medial pivot design benefit patients?
The medial pivot design closely mimics the natural motion of the knee by providing a stable medial compartment and controlled lateral movement. This helps reduce paradoxical femoral motion, enhances knee stability throughout flexion, supports deep flexion up to 155°, and promotes a more natural-feeling knee with improved functional performance.
Who may be a suitable candidate for the Excel MPK knee replacement system?
The Excel MPK is intended for patients with symptomatic knee joint disease requiring primary total knee arthroplasty, including those with osteoarthritis, rheumatoid arthritis, or post-traumatic arthritis when conservative treatments are no longer effective. Suitability should be determined by the treating orthopaedic surgeon based on the patient's clinical condition and functional needs.
