Why Smith & Nephew’s LEGION Revision Knee still matters in tough cases

When standard implants reach their limits, Smith & Nephew’s LEGION Revision Knee is designed for the difficult reconstructions - with modular metalwork, stems and cones that let surgeons rebuild destroyed joints with millimetre control.

Reviewed: ad hoc news Accessory & Components desk. Edited and checked on 2026-06-17, 09:47. Details in the imprint.

With the LEGION Revision Knee System from Smith & Nephew, the operating room suddenly looks more like a precision workshop than a place for brute force. Trays of stems, augments and cones wait under bright light, each part ready to rescue a failing knee. For surgeons, this set is the toolbox they reach for when simpler implants are no longer enough.

What this revision knee is built to do

The LEGION Revision Knee System targets complex primary and revision total knee arthroplasty, where bone has been lost and ligaments may no longer behave predictably. It offers modular femoral and tibial components, stems, augments and offset options so surgeons can rebuild alignment step by step.

In practice that means the surgeon can dial in varus-valgus balance and rotational position with much finer control than a standard primary implant. The system aims to restore stability even when the original joint anatomy has almost disappeared under years of wear, infection or multiple failed surgeries.

Modularity in the tray, control at the table

Open the instrument case and the modularity of LEGION Revision Knee is immediately visible. Separate stems in different lengths and diameters line up beside wedges and blocks that compensate for bone defects on the femoral condyles or tibial plateau. Each component locks together with a reassuring mechanical click.

That modular approach lets the surgeon customize the construct to the defect rather than forcing bone to suit the implant. In cases with large metaphyseal voids, Smith & Nephew also offers tibial cones in the LEGION system family to create a stable foundation where regular stems alone would struggle.

Constraint options for unstable knees

Revision knees often come with lax or damaged ligaments, so constraint becomes a key decision. LEGION Revision Knee is available in constrained condylar and rotating-hinge style variants, giving different levels of mechanical guidance when soft tissue can no longer do the job reliably.

In the OR this plays out as a pragmatic choice: a surgeon can start with lower constraint, test stability through a full arc of motion, and then move up if the knee still feels sloppy or wobbles into valgus or varus under stress.

How it feels in use, from surgeon reports

Surgeons who work regularly with the LEGION Revision platform often highlight the intuitive instrumentation and familiar ergonomics compared with Smith & Nephew primary knees. The cutting blocks and trial components feel like an extension of the primary system, which shortens the mental jump between simple and complex cases.

At the same time the sheer number of options can be a double-edged sword. Young surgeons sometimes describe the trays as overwhelming on first contact, with a learning curve to understanding when to choose a certain stem length or augment thickness and when to hold back.

Technical touches that make a difference

Cemented and cementless fixation strategies can both be used with LEGION Revision stems, depending on bone quality and surgeon philosophy. That flexibility matters in elderly patients with fragile bone as much as in younger revision candidates where long-term biological fixation is desirable.

Posterior-stabilized and constrained inserts are shaped to support deep flexion while reducing the risk of posterior impingement. In straightforward terms, the design tries to allow patients to bend their knee far enough for daily activities like getting up from low chairs without constant fear of instability.

Where the system shows its limits

No revision knee is perfect, and LEGION is no exception. The broad modularity comes with more parts to manage, more sterilization sets and longer set-up times, especially in smaller hospitals without dedicated revision teams.

There is also the reality that highly constrained constructs, even when well aligned, transmit higher forces into bone-cement or bone-implant interfaces. Over time that can increase the risk of aseptic loosening, a challenge that every constrained revision design has to live with.

Pricing and availability in everyday care

Smith & Nephew markets the LEGION Revision Knee System primarily to specialist orthopedic centers, where revision volumes justify the inventory. Exact prices vary widely by country, hospital purchasing power and tender structures, but the system sits in the premium revision band rather than the price-driven primary segment.

In Europe the implants are available via national distributors and group purchasing organizations, while in North America they are supplied directly to hospitals through the company’s orthopaedics sales network. Patients usually encounter them not on price lists but as the surgeon’s recommended option when a primary knee has failed.

How it fits into Smith & Nephew’s bigger picture

For Smith & Nephew, LEGION Revision Knee is a strategic component in its reconstructive portfolio alongside primary knee systems, hip implants and trauma hardware. Complex revision procedures tend to be higher value per case and can deepen relationships with high-volume orthopedic centers over many years.

Shares of Smith & Nephew plc (ADR) (US83175M2052) trade on the New York Stock Exchange, giving international investors exposure to this mix of advanced orthopaedics, sports medicine and wound management technologies.

Key facts on this revision knee

• Product: LEGION Revision Knee System
• Manufacturer: Smith & Nephew plc
• Category: Accessory/Spare part - orthopaedic implant system
• Launch: Initially introduced as part of the LEGION knee family in the late 2000s, with iterative updates since
• RRP / Price: Hospital contract-based, positioned in the premium revision knee segment
• Availability: Specialist orthopedic hospitals and revision centers in major markets including North America and Europe
• Target group: Adult patients requiring complex primary or revision total knee arthroplasty with bone loss or ligament insufficiency
• Highlight / USP: High modularity with stems, augments and constraint options to tailor reconstruction to severe defects and instability

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.