Component typePr

imar

y K

nee

Com

plex

K

nee

Revi

sion

K

nee

Nic

kel

Sens

itiv

ity

Cem

entl

ess

fixa

tion

Femur

Pegged Femur (CoCr)

Stemmed Femur (CoCr)

Pegged Femur (CPTi + HAP)

TiN Coated, Pegged

TiN Coated, Stemmed

Tibia

Short Stem (CoCr)

Long Stem (CoCr)

Short Stem (CPTi + HAP)

Long Stem (CPTi + HAP)

TiN Coated, Short Stem

TiN Coated, Long Stem

Tibial inserts (UHMWPE)

All-Polyethylene Tibia (UHMWPE)

Patella

Inset Saddle Button (UHMWPE)

CPTi + HA Cementless

Pegged Stemmed

MaterialsPatella

Femur options

Tibia options

Cobalt Chrome

Inset

Short stem Long stem

Titanium Nitride

All-polyethylene

Medial Rotation Knee™

Physiological Stability and Mobility for the Active Knee Without Compromise

Comprehensive size range with unlimited up/down-size matching for full intraoperative personalisation.

Product range suitable for primary and complex procedures.

A Portfolio with Options for Everyone

Reliable, Repeatable, Intuitive and FamiliarAdvanced instrumentation is provided for precise, accurate alignment, balancing and preparation.

All options for the surgeon’s preferred technique are provided for seamless, efficient and reliable surgery.

Single switch fine adjustment and locking.

Anterior first technique, anterior or posterior referencing.

Intuitive, clear, easy to use operation.

Distal first technique, femur or tibia first, anterior or posterior referencing.

Assisted balancing providing isometric stability through the collateral ligaments for the whole ROM.

MatOrtho Limited | 13 Mole Business Park | Randalls Road | Leatherhead | Surrey | KT22 7BA | United Kingdom.T: +44 (0)1372 224 200 | info@MatOrtho.com | For more information visit: www.MatOrtho.com

Part No. ML-300-029-L | Issue 4K020214 ARTG209657

ARTG210093 ARTG210345

ARTG209896 ARTG210094 ARTG210346

ARTG210017

The original medial ball-and-socket knee is now a successful philosophy and provided in a complete product range for all patient requirements.

The MRK™ is a step ahead of alternative TKR designs, providing inherent stability and improved high-end function for the patient with high expectations.

The MRK™ is anatomically and functionally asymmetric.

All three compartments work differently but together to provide improved stability and mobility throughout the range of motion - just like the normal knee.

Conforming saddle-shaped patella button design with over 35 years’ clinical history [4]

Physiologically lateralised trochlea, permits lateral patella tracking in flexion[3] - like the normal knee.

Deep trochlea support for native or resurfaced patella

Posterior stability for the whole ROM. Greater dislocation resistance than a post-and-cam design.

Medially stabilised articulation - like the normal knee.Substitutes the ACL, PCL and medial meniscus to provide normal kinematics [1,2].

Oblique joint line - like the normal knee.

Anterior stability for the whole ROM.

Single radius medial deep dish provides full engagement for the whole ROM, eliminating mid-flexion instability.

Lateralised extensor mechanism provides lateral stability - like the normal knee, for improved quadriceps efficiency and greater feeling of normality.

Lateral femoral rollback provides freedom for physiological rotation during normal activities and enables deep flexion - like the normal knee.

Highly conforming throughout ROM, maintaining large surface area contact and low stresses for low wear.

Proven materials with long-standing clinical evidence and demonstrated longevity with this design.

Unique, proven tibia locking design eliminates micromotion experienced with alternative designs.

Trochlea extended proximally and distally so the patella is always supported

Does not require a post or box-cut; no risk of stiffness from tight PCL or instability from non-functioning PCL.

Proven fixation. With a heritage of low revision rates [8, 9], the fixation design and tibiofemoral constraint work with normal knee function [1, 2] and preserve fixation longevity [10].

Natural Asymmetry

Full Mobilisation

Designed Without Compromise A Pedigree with Heritage and Clinical Data

Complete Stability

The MRK™ is the original medial ball-and-socket knee and has been in clinical use for over 20 years (first implanted in 1994).

The MRK™ has been shown to provide greater inherent stability than comparator devices [5]. Patients notice the difference and express that they prefer the medial ball-and-socket design over PS, CR and mobile designs [6].

When compared to other TKR, the benefits of the MRK™ are reflected in higher functional scores [7], higher rates of success and patient satisfaction [8] and lower revision rates [8 -10].

Experience normal again.1. Moonot et al. KSSTA. 2009; 17(8):927-34;

2. Moonot et al. The Knee. 2010; 17(1):33-7;

3. Rhee et al. JBJS-Br. 2012; 94-B no. SUPP IX 90;

4. Kulkarni et al. J Arth. 2000; 15(4):424-9;

5. Molloy et al. BJJ. 2013; 95-B SUPP 15 85;

6. Pritchett. J Arth. 2011; 26(2): 224-8;

7. Hossain et al. CORR. 2011; 469(1):55-63;

8. NJR Implant Summary Report, February 2015. Summary.Report.KP_Femoral_MRK.12/02/2015.20:30;

9. Data for the MRK™ in the NJR 11th Annual Report, 2014. http://www.njrreports.org.uk; 1

10. Mannan & Scott. JBJS-Br. 2009; 91(6):750-6.

Medial Rotation Knee™

Permits 140° flexion [1]