Welcome to Raphadon

Thank you for interest in Raphadon,
Tell us the details of your requirements. We will respond with an accurate quote.
Need something else? Use our Contact Us page.
Fields marked with an * are required.

get a quote now

Home / Artficial Limbs/Prosthetic Services/ Lower Limb Prosthesis/ Knee Joint

Knee Joint

Mechanical Knee Joint

The upper and lower joint sections are connected through the knee axis by bushings and ball bearings. The adjustable lock secures the joint in extension. The lock is released using the lock cable. Locking occurs automatically at full extension with assistance from the extension assist spring.

Polycentric Knee Joint

It is a polycentric prosthetic knee joint, which mimics the movement of a normal knee joint while walking. At the same time, it provides stability during the weight-bearing phase to ensure the person can walk with their artificial limb without falling.

Modular 4-bar Linkage Knee Joint for Knee Disarticulation

Suitable for the persons with transfemoral amputee and with long residual limb, disarticulation amputee ,The features: it's able for optimal swing phase control through the axis friction and adjusting of extension assist

Pneumatic Monocentric Knee Joint

The actuation threshold of the brake can be adjusted individually to suit the body weight and the wishes of the user. This takes into account the special requirements of the rehabilitation phase and of users with low mobility i.e., high response sensitivity for those users who tread cautiously.
Very acute flexion of the knee joint (up to 145°) is possible, which is particularly advantageous when, for instance, kneeling, sitting, or getting into the car.
Extension/flexion valves can be set independently of each other. These can be adjusted quickly and easily to the individual care needs of the user.

Pneumatic Knee Joint

Single-chamber pneumatics control the swing phase In swing phase, the smooth yet powerful single-chamber pneumatics - one chamber each for flexion and extension damping do not run out of air, even at various walking speeds. Harmonious flexion and extension movements, and therefore an approximation of the physiological gait pattern, are made possible. Here the joint geometry effectively shortens the prosthesis during swing, resulting in more ground clearance. Four-axis polycentric structure ensures stance phase stability In extension, the instantaneous centre of rotation is located above the joint and behind the load line, resulting in high stability in stance phase. The integrated extension assist spring ensures that the lower leg of the prosthesis is always extended at heel strike and weight can be safely supported on the prosthesis side. This is especially advantageous when the user takes small compensating steps, turns in a circle or walks in confined areas. The join offers numerous advantages, not only whilst walking. When sitting or kneeling, the large maximum flexion angle of 150° and the low system height when flexed make it both comfortable and practical. Easy to fit Flexion and extension dampening can be separately and individually customised to the needs of the user . A quick start guide included with the delivery facilitates the alignment process and helps establish the prosthesis settings. This effectively reduces the working time of the prosthetist and leads to rapid fitting success. Additional product characteristics • Main material: aluminium • Low weight: approx. 750 g • Connectors: proximal - pyramid adapter, distal - tube clamp Ø 30 mm • Plastic cover protects the pneumatics against dirt • Rounded contours protect the cosmetic cover

Balance Knee Joint

The Balance Knee is designed to offer the less active user a high level of security and stability. Its four-bar geometric design is easily adjusted to optimize the required balance between stability and walking dynamics for each individual. It also facilitates an easy kneeling action. Mid-swing shortening allows the prosthesis to swing more easily through each step and helps prevent hip hiking.

Simple to set up, the knee’s adjustment features (including the adjustable extension assist) can all be accessed externally with no disassembly of the prosthesis required. The design is maintenance free. Balance knee is available with stronger extension assist and a manual lock.

User profile:

Household and limited community ambulators
Single, slow speed ambulators
Low impact users and those with little voluntary control
Rated up to 125kg (275lbs)

Total Knee

The Total Knee, has been redesigned and given a whole new look. Now the knee is stronger and more durable. This is the go-to knee for superior shock absorption, increased comfort and a more natural gait. Mid-swing shortening offers increased toe clearance during swing to prevent hip-hiking and the 3-phase hydraulic swing control accommodates changes in walking speed. Plus, the adjustable stance flexion feature mimics the knee flexion that occurs during early stance, reducing shock and stress on the residual limb.

Designed for multi-speed ambulators.
Polycentric knee with geometric locking system.
Swing control adjustments through 3-phase (3-valve) hydraulic system.
Adjustable stance flexion.
Adjustable extension promoter.
Low build height, useful for long transfemoral limbs or knee disarticulation.

POWER KNEE

POWER KNEE, the only motor powered knee joint, provides active motion and superior powered stance stability to replace lost muscle function, enabling users to go further.

POWER KNEE provides active motion and superior powered stance stability to replace lost muscle function, enabling users to go further.
Delivering powered extension when standing up, controlled resistance when descending, and active flexion and extension during walking, POWER KNEE facilitates symmetrical weight distribution and natural gait.
High active users as well as users with higher functional loss testify that POWER KNEE restores their endurance, allowing them to go farther.
POWER KNEE has been demonstrated to significantly reduce rehabilitation time for new transfemoral amputees.
The PowerLogic Workbench software enables prosthetists and physical therapists to give patients visual feedback during training as well as to log and report on user performance and prosthetic use for better reimbursement documentation.

Hydraulic Knee Joint

Don't be fooled by the sophisticated profile, with the extension stop, lightweight Aluminum construction and enhanced spherical bearings, the Knee is capable of withstanding the most unpredictable conditions.

Single axis hydraulic knee system with swing and stance control (SNS®). Designed for multi-speed ambulation.
Durable and secure motion.
Ultra-durable Aluminum frame.
Weight limit of 136kg (300lbs).
Roller bearings at knee axis and cylinder attachment points for smooth action.
Yielding stance control.
Mode selector switch allows manual locking and free swing functions.
Smooth profile assists with cosmetic finishing.
Low Swing Resistance kits and High Stance Resistance kits are also available.

Modular Knee Joint with Rotary Hydraulic

The KNEE with its unique rotation hydraulics principle is now also approved for prosthesis wearers with a body weight of up to 150 kg (330 lbs). With the KNEE, both the stance and the swing phase are controlled by the hydraulics. For example, walking down stairs step-over-step and walking down inclines are effectively supported by closely approximating a physiological gait pattern, even at various walking speeds.

At a Glance

Waterproof – NEW
Manual lock – NEW
Available in both pyramid version and screw top version – NEW
Rotary hydraulics control stance and swing phase
High hydraulic resistance – to prevent involuntary flexion of the joint
Flexion and extension resistance can be adjusted easily and independently
Approved up to a maximum weight of up to 330 lbs/150 kg
Suitable for K3,K4 patients

A Confident Step Amputees must be able to rely on their prosthesis, especially in the stance phase. The rotation hydraulics of the KNEE respond to the ground reaction forces in the stance phase at every step. They build up high hydraulic resistance, which prevents involuntary flexion of the joint.

Extensive adjustment possibilities The 3R80 offers comprehensive adjustment possibilities for the individual adaptation of stance and swing phase characteristics. Flexion and extension resistance can be adjusted easily and independently. Optimum adjustment values for stance phase damping and response behaviour between the stance and swing phase are achieved by gradually turning the adjustment rings. The level of resistance in the stance phase can be easily adapted to the requirements of the user, and enables variable knee flexion under load up to 4° while bouncing, and more than 4° while yielding. An additional spring can be integrated very easily in order to increase the extension assist force if required. The spring, setting aid and required tube adapter are included in the scope of delivery.

Endurance 160 Hydraulic Knee

• Shorter 160mm Hydraulic Unit
• Swing and Stance Hydraulic Unit
• Integrated A-P slide via proximal adapters
• Choice of 4 proximal adapters
• Standard stance phase hydraulic control
• Adjustable yield rate
• Weight rated up to 300lbs

NK-6 - 6-Bar Hydraulic Knee

The NK-6 has a unique 6-Bar polycentric structure, which provides a great stability in the stance phase. An original mechanical sensing mechanism, p-MRS system automatically detects the walking status and then controls the stability accordingly. The stance flexion feature and the smooth swing phase provided by a hydraulic cylinder promise a comfortable walking to the user. Optional is Selective Lock

Polycentric knee joint with 3-valve hydraulics

Extension/flexion valves can be set independently of each other. These can be adjusted quickly and easily to the individual care needs of the user
The optional closing geometry of the construction ensures stance phase stability and a high degree of safety, particularly at heel strike
Higher ground clearance due to the polycentric joint construction. The risk of stumbling or the prosthesis catching on the ground is considerably reduced, even on uneven surfaces.
Very acute flexion of the knee joint (up to 150°) is possible, which is particularly advantageous when, for instance, kneeling, sitting, or getting into the car.

Balance Knee Control

Balance Knee Control is designed to offer a high level of stability for low active users, who typically use walking aids. It is intended to facilitate single-speed walking on level ground and gentle slopes, allowing the user to negotiate stairs* and small obstacles, as well as sit and/or kneel.

Featuring proven Össur technology, Balance Knee Control offers a stable, yet more dynamic alternative to the Locking Knee.

This single axis knee has a weight-activated friction brake that can be adjusted to suit the weight of individual users. The knee also incorporates an extension assist, adjustable stance flexion and a manual lock for use as and when required.

*The knee should only be used in full extension when negotiating stairs.

Balance Knee

User profile:

Household and limited community ambulators
Single, slow speed ambulators
Low impact users and those with little voluntary control
Rated up to 125kg (275lbs)

symbionic leg 3

Featuring the latest advances in Bionic Technology by Össur, SYMBIONIC LEG 3 is the next generation of integrated prosthesis that combines a microprocessor knee and powered microprocessor ankle with proactive ankle flexion. SYMBIONIC LEG 3 was designed to enable users to experience greater safety, symmetry and confidence when walking, without needing to adapt their walking style or otherwise compensate for their prosthesis.

Key features

Designed to enhance user’s safety through powered toe lift and stumble recovery, which can help reduce the risk of trips and falls.
Enabling consistent ground clearance allows the prosthetist to better match the user’s native limb length. Combined with easier swing initiation, SYMBIONIC LEG 3 encourages greater symmetry while walking and helps restore a more natural gait.
With its unique intelligent terrain adaptation capabilities, the SYMBIONIC LEG also can help enhance users’ confidence, by providing stability while walking on such everyday surfaces as grass, slopes, or uneven ground. This enables the user to walk more easily without having to literally watch their every step.
Extension lock mechanism, to lock the knee in full extension and increase safety and comfort under specific circumstances.

SYMBIONIC LEG 3 now features a more powerful knee actuator and new kinematic sensor for better stability, increased support across a wider range of stance flexion, and faster, more consistent swing extension.

Symbionic Leg 3

Key features

Designed to enhance user’s safety through powered toe lift and stumble recovery, which can help reduce the risk of trips and falls.
Enabling consistent ground clearance allows the prosthetist to better match the user’s native limb length. Combined with easier swing initiation, SYMBIONIC LEG 3 encourages greater symmetry while walking and helps restore a more natural gait.
With its unique intelligent terrain adaptation capabilities, the SYMBIONIC LEG also can help enhance users’ confidence, by providing stability while walking on such everyday surfaces as grass, slopes, or uneven ground. This enables the user to walk more easily without having to literally watch their every step.
Extension lock mechanism, to lock the knee in full extension and increase safety and comfort under specific circumstances.

RHEO Knee XC

From rehabilitation, to the home and office, to the gym and the trail, RHEO KNEE XC confidently goes anywhere. Whether rehabilitating on a spin cycle, navigating tight spaces, strolling around town, or hiking a trail in the rain, RHEO KNEE XC provides the perfect balance of stability and dynamics.

Key Features

Weatherproof design allows exposure to splashing of water.
Magnetorheologic technology enables an instant response so that users never have to wait for the knee to catch up with them.
Smart gait detection, including kinematic sensor technology, ensures stability and dynamic response in every situation.
Advanced actuator and resistance control ensure best possible resistance, e.g. more support in stair descent and minimum effort needed in level ground gait.
Advanced extension assist mechanism.
Effortless swing initiation enables a smoother gait, even in crowds and confined spaces.
Allows high impact activities such as running and jogging.
Extension lock mechanism, to lock the knee in full extension and increase safety and comfort under specific circumstances.
Efficient cycling and secure stops with Automatic Cycling Recognition.
Allows step-over-step stair ascent.
ÖSSUR LOGIC app offers two levels of experience one for the user and another for the practitioner.

RHEO Knee

Now weatherproof, the RHEO KNEE 3 provides the most natural knee function among all microprocessor knees because it continuously adapts to the user and the environment while providing excellent stability and safety.

Weatherproof design allows exposure to splashing of water.
Advanced actuator and resistance control ensure best possible resistance, e.g. more support in stair descent and minimum effort needed in level ground gait.
Effortless swing initiation enables a smoother gait, even in crowds and confined spaces.
Smart gait detection, including kinematic sensor technology, ensures stability and dynamic response in every situation.
Magnetorheologic technology enables an instant response so that users never have to wait for the knee to catch up with them.
Extension lock mechanism, to lock the knee in full extension and increase safety and comfort under specific circumstances.
Advanced extension assist mechanism.
ÖSSUR LOGIC app offers two levels of experience one for the user and another for the practitioner.