Best Innovative Prosthetic Knee Joints in India

There are two major classes of modern prosthetic knee joints, microprocessor-controlled and non-microprocessor-controlled knee joints. Your prosthetist will help you understand the different types of knee joints and help you decide which type of knee will help you maximize your potential based on your goals, muscle strength, balance and activity level (Mobility Class).

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Prosthetic knees are designed to mimic the bending (flexion) and swinging (extension) of the anatomical knee joint as a patient walks. From advanced computer-controlled components to simple locking joints, the prosthetic knee works together with the prosthetic foot and socket to achieve a smooth gait pattern.

Types of Knees

All prosthetic knees require some type of mechanism, whether controlled by a computer or not, to regulate the bending and swinging of the knee. Prosthetic knees can be further classified into sub-categories, and there is a lot of crossover into multiple categories, but the easiest ways to categorize prosthetic knees is by the number of moving parts (or axis) and by the method of control (how the bending of the knee is regulated).All prosthetic knees, computerized or not, fall into one of two categories, single axis or polycentric (multiple axis.)

Prosthetic knee joints are also classified by the way that the bending and swinging of the knee joint is controlled. There are two general classifications, however some knee joints incorporate combinations of these controls.

Hydraulic / Pneumatic Control:Hydraulic (fluid) and pneumatic (air) controlled knees have inner chambers that regulate the bending and/or swinging of the knee at different walking speeds. These knees are best for patients with higher activity levels and frequent changes of speed.

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Mechanical Friction: The friction (resistance to bending) in the knee joint is typically adjusted by tightening a bolt. Often, a spring is used to help the knee straighten before the foot hits the ground during walking. A mechanical friction knee bends when as the user naturally walks as the toe of the prosthetic foot is properly loaded.

Weight Activated Stance: Weight activated stance control knee features a braking mechanism preventing the knee from bending as long as the user has weight on the prosthesis. These knees are typically feature a single axis design and are very safe, simple, lightweight and fairly inexpensive. One of the disadvantages is that all of the user&#;s weight must be removed from the prosthesis to unlock the knee to enable sitting.

Manual Locking:A manual locking knee is the most stable type of knee joint. The manual locking knee is always stiff and will not bend until a cord is pulled and the lock is released, making it very safe.

Microprocessor Controlled Knee (MPK): Advanced computer-controlled knee units provide the maximum safety for trans-femoral amputees. MPK knees feature an onboard micro-processor that receives feedback from sensors inside the joint to &#;learn&#; or &#;react&#; to the user&#;s walking characteristics and adjust the stiffness of the knee to adjust for different walking speeds, terrain and situations. Your prosthetist is able to adjust the parameters of control using a laptop or tablet to fine tune the characteristics of the knee.

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