Sale on Manual & Electric Hospital Beds - Starting from 25 September!

✓ Certified Professional Seller

Wonderful Orthopaedic, Trauma & Prosthetics

Wonderful 3F36

Product Code: OTAP-PLAC-2923

Resistances and stops set by the prosthetist, then set again as the user changes.

A knee joint is not adjusted once. Resistances, stops and any extension assist are set at fitting, then revisited as a user's confidence, strength and walking speed change over the first months and years. Listed on Medigear.uk for UK business buyers.

Sections

Prosthetic Feet & Knees

Categories

Orthopaedic, Trauma & Prosthetics

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

Fitting a prosthetic knee is the beginning of a process rather than the end of one. At the first fitting a user is typically cautious, walks slowly and loads the limb tentatively. Over the following months, as confidence and muscle strength build, walking speed rises, stride length changes and the demands placed on the joint move with them. A component that cannot be retuned across that range has to be replaced when the user outgrows its settings.

Adjustment is therefore a specification in its own right. Several distinct settings are commonly available on knee joints of this class, and which are present here is established from the manufacturer's documentation.

Flexion resistance governs how readily the knee bends once the foot leaves the ground, and setting it too low sends the heel rising too far, while setting it too high leaves the shank trailing. Extension resistance governs the end of swing, cushioning the joint as it reaches full extension so it does not arrive with a jolt before heel strike. Where the two are independently adjustable, each half of the swing can be tuned separately, which matters because a user rarely needs the same change in both.

An extension assist, usually a spring, helps carry the shank forward to full extension, and is often the first thing adjusted as a user's walking speed increases. On polycentric designs a stop setting can shift the effective instantaneous centre of rotation, which alters how much inherent stance stability the geometry provides, and that is typically reduced as a user becomes more confident and wants easier voluntary flexion.

Together those settings mean one component can serve a user through rehabilitation and beyond it. For a service, they also mean the joint is worth stocking, since it can be adapted rather than exchanged.

Two practical questions follow. The first is what tooling is needed to reach the adjustments, since some are set with a standard hex key and others require manufacturer-specific tools. The second is the service interval, because adjustable mechanisms carry bearings, springs and, where fitted, a hydraulic or pneumatic unit that has a maintenance schedule.

This is a component rather than a finished prosthesis. It is fitted, aligned and adjusted by a qualified prosthetist as part of a limb assembled around the individual, and selection, alignment, settings and suitability for a given patient are clinical decisions taken by that professional. The manufacturer, adjustment ranges, control type, load rating, mobility grade, indicated amputation levels, build heights and connection types are provided by the seller at quotation, with UKCA or CE marking documentation, the declaration of conformity, instructions for use and warranty terms issued by the manufacturer or held by the seller.

Early rehabilitation is served by settings that can be started conservatively, with stance stability favoured while a user is still building confidence.

Progression through rehabilitation is supported by retuning the same component as walking speed and stride length increase, rather than exchanging it.

Users whose activity changes over time are accommodated by adjustments that can be revisited at review appointments.

Transfemoral prosthetic fitting is the primary application, with the joint supplied as a component for a prosthetist to align and adjust within a complete limb.

Suitability for a given patient follows the load rating and indicated mobility grade, both taken from the manufacturer's instructions for use.

Clinics stocking components benefit from a joint that can be adapted across a range of users rather than suiting one setting only.

Services planning maintenance are supported by establishing the service interval and adjustment tooling before the component enters stock.

Tuned Again as the User Changes

Settings established at fitting can be revisited as confidence, strength and walking speed develop over the months that follow.

Each Half of Swing Addressed Separately

Where flexion and extension resistance are independently adjustable, the rise of the heel and the arrival at extension are tuned on their own.

Extension Assist for Rising Cadence

A spring assist carrying the shank forward is commonly the first setting revisited as a user's walking speed increases.

Stance Stability Traded as Confidence Grows

On polycentric designs a stop setting can shift the effective centre of rotation, adjusting how much inherent stability the geometry provides.

One Component Across a Rehabilitation Path

A joint that follows a user through progression can serve from early fitting onward instead of being replaced.

Worth Holding in Stock

Adjustability makes a component adaptable to more than one user profile, which bears on what a service keeps on the shelf.

Tooling Requirements Established

Whether adjustments need standard hex keys or manufacturer-specific tools is confirmed before the component enters stock.

Service Interval Known in Advance

Bearings, springs and any fluid unit carry a maintenance schedule, established at quotation.

Load Rating Taken From the Instructions for Use

The maximum patient weight is established from the manufacturer's documentation rather than from any listing.

Documentation Requested With Supply

UKCA or CE marking documentation, the declaration of conformity and instructions for use are requested from the seller at quotation.

Supply and Documentation Arranged

Medigear.uk can arrange supply, documentation and the provision of spares and consumables.

Modular Prosthetic Knee Joint

A component for above-knee prosthetic fitting, assembled into a limb by a prosthetist.

Item Reference: 3F36

To be confirmed against the manufacturer's marking, and distinguished from similar references from other manufacturers.

Flexion Resistance Adjustment

Governing how readily the knee bends once the foot leaves the ground, with the range confirmed at quotation.

Extension Resistance Adjustment

Cushioning the joint as it reaches full extension, with the range confirmed at quotation.

Independent Adjustment

Whether flexion and extension are set separately, confirmed at quotation.

Extension Assist

Spring assistance carrying the shank to extension, with presence and range confirmed at quotation.

Stance Stop Setting

Where present, shifting the effective instantaneous centre of rotation on a polycentric design.

Linkage Construction

Number of bars and pivot axes confirmed at quotation.

Swing and Stance Phase Control Type

Mechanical, pneumatic or hydraulic, confirmed at quotation.

Maximum Patient Weight

Confirmed at quotation against the manufacturer's instructions for use.

Mobility Grade and Indicated Amputation Levels

Confirmed at quotation against the manufacturer's instructions for use.

Maximum Knee Flexion

Confirmed at quotation.

Component Weight, Structural Height and System Height

Confirmed at quotation for limb build calculations.

Proximal and Distal Connections

Types and diameters confirmed at quotation for compatibility with the build.

Materials and Pivot Bearings

Confirmed at quotation, with replacement pin availability established.

Water Exposure Rating

Confirmed at quotation, with conditions of use taken from the instructions.

Adjustment Tooling

Standard or manufacturer-specific tooling, confirmed at quotation.

Service Interval

Confirmed at quotation for the mechanism supplied.

UKCA or CE Marking and Declaration of Conformity

Issued by the manufacturer and requested from the seller at quotation.

Instructions for Use

Provided by the seller at quotation, and required before fitting.

Warranty Terms

Set by the seller at quotation.

The 3F36 is a modular prosthetic knee joint supplied as a component to be built into a limb around one person, and the case for a joint of this kind rests on what happens after the first fitting. A user is typically cautious at the outset, walking slowly and loading the limb tentatively, and over the following months confidence and strength build, walking speed rises and the demands on the joint move with them. Adjustment is therefore a specification in its own right: flexion resistance governs how readily the knee bends once the foot leaves the ground, extension resistance cushions the arrival at full extension, an extension assist helps carry the shank forward as cadence increases, and on polycentric designs a stop setting can shift the effective centre of rotation and with it the inherent stance stability. Where those settings are independent, each can follow the user separately. Tooling requirements and the service interval are worth establishing alongside them. Selection, alignment, settings and suitability remain clinical decisions for the prescribing prosthetist. The manufacturer, adjustment ranges, control type, load rating, mobility grade and build heights are provided by the seller at quotation, alongside UKCA or CE documentation and instructions for use. Medigear.uk lists the joint for UK business buyers and can arrange supply, documentation and the provision of spares and consumables. Enquire for a written quotation.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

It is a modular prosthetic knee joint supplied as a component for a prosthetist to fit within an above-knee prosthesis. The construction, adjustments and ratings are confirmed at quotation against the manufacturer's documentation.

Because a user's walking speed, stride and confidence change over the months following fitting, and a joint that can be retuned follows those changes instead of being outgrown.

How readily the knee bends once the foot leaves the ground, which governs how far the heel rises during swing.

The end of swing, cushioning the joint as it reaches full extension so it does not arrive abruptly before heel strike.

Whether the two are independently adjustable is confirmed at quotation, and where they are, each half of swing can be tuned on its own.

It helps carry the shank forward to full extension, and is often the first setting revisited as walking speed increases.

On polycentric designs it can shift the effective instantaneous centre of rotation, altering how much stance stability the geometry provides.

Confirmed at quotation, since some adjustments are made with standard hex keys and others require manufacturer-specific tools.

The service interval is confirmed at quotation, since adjustable mechanisms carry bearings, springs and, where fitted, a hydraulic or pneumatic unit.

Confirmed at quotation against the manufacturer's instructions for use, which is the only source that should be relied on for a load-bearing component.

A qualified prosthetist, who sets alignment and all adjustable settings to the individual as part of a complete prosthesis.