The ACS knee from Implantcast features a cobalt chrome alloy femoral component with a titanium nitride ceramic coating. The system includes mobile and fixed bearing options. The device had less than 1% of the primary knee market in the NJR report for England and Wales in 2011.

The Anatomic Graduated Component (AGC) total knee system from Biomet was first implanted in 1983. This is a minimally conforming “flat on flat” design attributed to Ritter. The system includes Universal and sided cobalt-chrome femoral components. The tibial component is available as...

The Columbus Total Knee System from Braun comprises a suite of implants including cruciate sparing, cruciate retaining, fixed or rotating platform and revision systems. The implants come cemented or cementless (coated with Plasmapore®). The trochlea is said to support natural patellar...

The eLibra Dynamic Knee Balancing System is an electronic pressure sensor intended to assist surgeons in ensuring ligament balance during knee replacement. The concept is that after the distal femoral and proximal tibial cuts, the device measures the pressures in the medial and...

With minor bone destruction and a largely intact ligament structure in the knee, the implantation of a unicondylar knee prosthesis can be advantageous. Long-term results over three decades prove the very successful implementation of the LINK Endo-Model Sled Knee Joint Prosthesis, offering...

The Endo-Model knee arthrodesis nail is a modular fusion nail. The device is available in either CoCrMo or Tilastan (titanium). The latter is uncemented, but the CoCrMo version is cemented. There are right and left versions. The device is distributed by Newsplint in the UK.

According to the manufacturer, the device's 360 degree actuation design enables a clinician to deploy implants in any hand position.  As well as facilitating easier implant deployment, the system has a built-in depth penetration limiter and a stiffer needle shaft for greater control.

The Genesis II Total Knee System is a cemented primary and revision knee replacement system from Smith and Nephew, implanted since the 1990s. The features of this device include a deeper and more lateralized trochlear groove than earlier designs, an externally rotated femoral component (meaning...

The GMK knee is a knee replacement system from Medacta. The system includes a unicompartmental knee, fixed, mobile and semiconstrained primary versions and a revision system. Cemented and uncemented versions are available. The system has been conceived as an evolution of two pre-existing...

The iDuo G2 Bicompartmental Knee Resurfacing Device is a custom resurfacing for the knee which combines replacement of the patellofemoral joint and either lateral or medial compartments, whilst preserving the cruciate ligaments. Customised jigs are used for implantation.

The INDUS knee is a low-cost knee prosthesis system designed and manufactured in India by BioRad Medisys. The design of the device is posterior-stabilised and high-flexion. The latter is achieved through a J-curve femoral component geometry and a 7 degree slope on the tibial component. The tibia...

The iTotal (R) knee replacement from ConforMIS is a customised knee replacement system in which CT data are used to manufacture a patient-specific implant. Patient-specific jigs (the iJig (R) instrumentation) are used in implantation as part of the system. This customised approach can improve...

The iUni G2 Unicompartmental Knee Resurfacing Device is a customised unicompartmental device which is manufactured to fit the individual patient. The device is made using the ConforMIS iFit technology from CT data. Customised jigs are used for device implantation.

The Journey Deuce partial knee replacement from Smith and Nephew is a minimally invasive system designed to preserve the cruciate ligaments and the lateral compartment of an arthritic knee, whilst replacing the patello-femoral and medial compartments.  The knee was launched in 2007....

The Journey Patello-Femoral replacement is part of the Smith and Nephew system for selective replacement of all or part of the knee. The implant is manufactured from Oxinium (oxidised zirconium) and is said to have an anatomic design, with a deepened and lateralised trochlear groove, optimised...

The KineMatch (R) Patello-Femoral Replacement from Kinamed Inc. is a custom-made patellofemoral replacement manufactured from CT data. The device comprises a customised CoCr femoral component and a UHMWPe patellar button. The system comes with a unique jig for each case. 

The Kinespring is an implantable device designed to unload the medial compartment in an osteoarthritic knee and take some of the load (typically 18 kg during stance) without transferring it to the lateral compartment. It comprises two springs connected via ball and socket joints to the femur and...

The HemiCAP system from Arthrosurface is intended for the treatment of large full thickness cartilage lesions of the knee. Systems are available for the femoral condyle and the patello-femoral joint. The UniCAP system comprises a cobalt chrome articulating surface and an UHMWPE tibial implant...

The Low Contact Stress (LCS) knee system from DePuy is a rotating platform knee replacement system, first implanted in 1977.  The device has a polished cobalt-chrome tibial tray into which the peg of the polyethylene tibial component is placed to allow rotation. There are antero-posterior...

The LEXA (R) monobloc knee replacement is a rotating hinge knee replacement indicated for complex primary or revision knee replacement. The system appears straightforward with three size options for the femur and tibia, all of which are compatible with each other. Tibial and femoral wedges are...

The M/G® Unicompartmental Knee System provides a versatile system that permits normal biomechanical function, provides secure fixation, and facilitates precise implantation.  A wide range of sizing options for both femoral and tibial components provides intraoperative flexibility and...

Supplied by the manufacturer on a custom made basis, this is a 2-part intra-medullary device designed for arthrodesis of the knee. The components are introduced via the knee joint and then joined by a locking pin. Each nail segment can be fixed in the medullary canals with cross-locking...

The Mayday Nail  is a 2-part intra-medullary device designed for arthrodesis of the knee, where both components are introduced via the knee joint and joined by a locking pin. Each nail segment may be fixed in the respective medullary canals by means of cross locking screws. Additional...

The Medial Rotation Knee differs from other contemporary knee designs by having a geometry which includes a spherical medical tibial condyle and a more cylindrical lateral femoral condyle.  The spherical medial condyle allows rotation in flexion, whilst the smaller cylindrical lateral...

The MyKnee® Patient Matched Instrumentation system from Medacta is one of a number of emerging customised jig systems for primary knee replacement, in this case the Medacta GMK knee . Benefits of these systems are said to include better implant positioning, a more streamlined procedure...

The Neff fusion nail from Zimmer is a modular nail for knee fusion. The nails on the device are cut to size intraoperatively and a jig permits the placement of interlocking screws.

The NexGen knee system by Zimmer is a comprehensive suite of implants for primary and revision knee replacement. Characteristics include asymmetric femoral radii (lateral condyle larger than the medial), a minimized width and thickness of the anterior femoral flange, and the availability of...

The OrthoGlide interposition arthroplasty for the knee comprises a dished, disc-shaped cobalt chrome component which is inserted into the medial compartment of the knee in a minimally invasive fashion. The device has a lip which locks over the posterior aspect of the tibial plateau. The...

The OSTEO+ Plate from FH Orthopaedics is an adjustable TA6 VA4 high tibial osteotomy device which can be opened and locked using a clutch system.  We are not aware of published resultd fot this device.

The Osteobridge Intramedullary Knee Arthrodesis device from Merete is one of the Osteobridge range of products with applications including orthopaedic oncology. The device allows independent sizing of both femoral and tibial components, with an adjustable linking spacer. Hollow spacer shells can...

The Oxford Partial Knee from Biomet is a unicondylar knee replacement system which represents an evolution of the original meniscal arthroplasty. The presently available Phase 3 device includes 5 sizes of femoral component, an anatomically shaped tibial component, redesigned meniscal bearings to...

The Patient-Specific Instrumentation system from Zimmer is a custom-jig system for total knee replacement. The system is compatible with the NexGen Complete Knee Solutions and the Gender Solutions Natural Knee Flex systems. Preoperative planning is performed using MRI data. The jigs are...

The P.F.C. SIGMA Total Knee System is designed to provide the surgeon with surgical solutions for a variety of clinical indications. Based on the clinically successful P.F.C. Total Knee System introduced in 1984, P.F.C. SIGMA continues a history of innovation based on clinical proof. P.F.C....

The POSITION High Tibial Osteotomy Plate from Braun is an anatomic plate with an integral spacer which helps to maintain the osteotomy. Alignment can be achieved using the OrthoPilot Navigation system from Braun.  The surgical technique brochure for the POSITION HTO plate can be found...

The Preservation Minimally Invasive Mobile Bearing Unicompartmental knee system was designed in 2001 and made available in the United Kingdom from 2002. Following poor results in the National Joint Registry of England and Wales, the device was discontinued throughout Europe in 2009.

The PROFIX Total Knee System from Smith and Nephew is a well-established system with long term results. It is available in cemented and cementless (Hydroxylapatite on porous coating) variants.  The FLEXCR insert is intended to accommodate up to 155 degrees of flexion with reduced...

Prophecy pre-operative navigation guides from Wright Medical are rapid-manufactured guides based on CT or MRI data for the Advance knee. The unique feature of this system compared with others is that standard metal guides are embedded into the rapid-manufactured guide, so that cuts are made...

According to the manufacturer, the device allows clinicians to reconstruct severe soft tissue and bony defects.  Modular wedges, stems and and metaphyseal sleeves are available in a range of sizes. This metaphyseal sleeve fixation with a rotating hinge mechanism is a useful option in...

The SAIPH knee system is the evolution of the MRK knee. The geometry is very similar to the older and proven MRK system, but the instruments and the device itself are lower profile and updated. 

The Scorpio Single Axis Knee Replacement System from Stryker is a single radius design, the intention of which is to address mid-flexion instability after surgery. It is available with X3 polyethylene inserts, and in cruciate retaining and cruciate substituting designs. The associated revision...

The ShapeMatch system is a customised jig system for the Triathlon knee , the combination of which is called the Triathlon CustomFit Knee®. The technology was originally developed by OtisMed Corporation, which was bought by Stryker in 2009. The planning software uses MRI or CT data for...

The Signature Personalised Patient Care system is Biomet’s customised jig system for the Vanguard knee replacement. MRI or CT data are reviewed on an online planning system for final checking by the surgeon. The femoral jig positioning determines the level of the resection and the...

The Spacer K is a temporary implantable knee spacer, resembling an ultra-congruent condylar knee prosthesis and which is used in two stage revision of infected total knee replacements as part of an appropriate surgical and antibiotic regimen. The components are designed to be fixed with...

The STRIDE unicondylar knee replacement system from Blue Belt Technologies is a unicondylar knee replacement system designed for implantation with the Navio PFS surgical robot, to allow accurate placement of the implant. 

The T2 knee arthodesis nail system is a long intramedullary nail designed for fixation of femur and tibia. It incorporates a curvature which allows the nail to curve the length of the limb and is compatible with other Stryker T2 instrumentation.

The TomoFix Medial High Tibial Plate is one of a system of plates which includes the TomoFix Lateral Proximal tibial plate, and medial and lateral distal femoral plates. Key to the TomoFix technique is the placement of a lag screw in the plate which pre-tensions the lateral cortex.  The...

Which Medical Device of the Year 2012 First Runner-Up: Orthopaedics   Our device nominator said, "“The fastest growing, lowest revised knee on the market...” We said, “We like the Triathlon knee, but aren’t aware of evidence that outcomes are better...

The Trigen Knee Fusion Nail is one of the Trigen series of intramedullary nails. The nail is titanium and is intended to be inserted from proximal to distal. Proximal locking is with a 5.0mm screw or two 6.4mm reconstruction bolts. The nail has a radius of curvature of 1.5 to 2.5m. It is...

The TruMatch™ Personalised Solution knee replacement system is Depuy’s customised jig for Sigma primary knee replacements . As with other customised jig systems, preoperative CT data are used to plan the final position of the implant. The CT data are sent to Depuy, and a...

Uniglide is a clinically proven highly congruent, triple radius unicompartmental knee system, offering the surgeon a high level of flexibility through advanced instrumentation and diverse implant choice. With over ten years’ successful clinical use of advanced coating technologies,...