Wonderful 3FH-SAH80

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.

Users walking at varying speeds are served by hydraulic resistance that rises with angular velocity, so the joint responds differently to a fast step and a slow one.

Descending slopes and stairs draws on stance phase resistance, which opposes flexion while weight remains over the limb.

Kneeling and deep sitting are accommodated by flexion to 165 degrees.

Water-based activity is supported by a housing the manufacturer states as resistant to seawater, fresh water and chlorinated water, subject to the stated conditions of use.

Users who would otherwise need a second limb for wet environments may be served by a single waterproof joint, where the prescribing prosthetist judges that appropriate.

Clinics building limbs to individual measurements work within a structural height of 186 mm and a system height of 158 mm.

Both Gait Phases Under Hydraulic Control

Stance and swing resistance are both hydraulic, so the joint is governed by one consistent mechanism through the whole gait cycle.

Resistance That Rises With Speed

Because fluid is forced through a restriction, a rapid flexion under load meets more resistance than a slow controlled movement.

Resistances Set to the Individual

Stance and swing characteristics are adjusted by the prosthetist to the user's weight, activity and gait.

A Mechanically Simple Single Axis

The joint pivots about one point, keeping the moving parts few and the construction straightforward to service.

Flexion to 165 Degrees

Covering kneeling and deep sitting positions alongside the range walking requires.

898 g in Alloy Construction

Titanium alloy with aviation-grade magnesium-aluminium alloy and beryllium bronze holds the joint to 898 g.

Rated for Immersion

The manufacturer states resistance to seawater, fresh water and chlorinated water.

Build Heights Stated for Fitting

A structural height of 186 mm and a system height of 158 mm give the prosthetist defined figures to build within.

Documentation Requested Before Supply

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

Safety-Bearing Figures Confirmed in Writing

The patient weight limit is published inconsistently for this reference, so it is taken from the manufacturer's instructions for use before fitting.

Supply and Documentation Arranged

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

Single-Axis Hydraulic Knee Joint

A prosthetic knee pivoting about one axis with hydraulic control of both gait phases.

Swing Phase Control

Hydraulic governance of flexion and extension once the foot has left the ground.

Stance Phase Control

Hydraulic resistance to flexion while body weight passes over the limb.

Velocity-Dependent Resistance

Resistance rising with angular velocity through the hydraulic restriction.

Adjustable Stance and Swing Resistance

Set by the prosthetist to the individual user.

Maximum Knee Flexion: 165 Degrees

Covering kneeling and deep sitting positions.

Weight: 898 g

For the joint as supplied, without adaptors or tube.

Structural Height: 186 mm

The overall height of the component.

System Height: 158 mm

The height used in limb build calculations.

Materials

Titanium alloy with aviation-grade magnesium-aluminium alloy and beryllium bronze.

Water Resistance

Stated by the manufacturer as resistant to seawater, fresh water and chlorinated water.

Maximum Patient Weight

Published as both 125 kg and 150 kg for this reference, and to be taken from the manufacturer's instructions for use.

Mobility Grade and Indications

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

Proximal and Distal Connections

Connection types confirmed at quotation for compatibility with the intended build.

Item Reference

3FH-SAH80, with the final character to be confirmed against the manufacturer's marking.

Manufacturer and Year

Confirmed at quotation.

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 3FH-SAH80 is a single-axis hydraulic prosthetic knee joint, and the case for it rests on a knee needing to behave in two ways within one stride. Through stance it must resist flexion so the limb does not buckle under load; through swing it must flex and extend freely enough for the shank to clear the floor and reach extension before heel strike. Hydraulic control reconciles those by making resistance depend on angular velocity, so a rapid flexion meets more opposition than a slow one, and on this joint the same principle governs both phases with stance and swing resistances set by the prosthetist to the individual. Flexion reaches 165 degrees, the alloy construction holds the joint to 898 g at a structural height of 186 mm and a system height of 158 mm, and the manufacturer states resistance to seawater, fresh water and chlorinated water. Selection, alignment and suitability remain clinical decisions for the prescribing prosthetist. The manufacturer, patient weight limit, mobility grade, indicated amputation levels and connection types 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.