Below knee prosthetics
A below knee prosthetic, or transtibial prosthesis, is an artificial limb replacing a lower leg amputated below the knee joint. It comprises a custom-made socket, suspension system, pylon or shin component, and foot. Tailored to fit the individual's residual limb, it restores mobility and enables activities like walking and running. By resembling a natural leg, it enhances independence and quality of life.
What is a Below the Knee Prosthetic Leg?
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Below-knee prosthetic leg is an artificial leg system used when an individual have an amputation below the knee joint in one or both legs.
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Below the Knee Prosthetic Leg Types
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There are primarily two types of products regarding below-knee prosthesis.
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With Vacuum System
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With Pin System
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Before purchasing a below-knee prosthesis, you should first choose one of these 2 types and then choose a carbon foot.
What is Vacuum System Prosthesis Treatment?
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In vacuum system prosthesis treatments, the air formed between the liner attached to the patient and the socket applied to the patient’s stump is pumped and expelled with the help of a valve. This provides a secure grip in the socket area and helps prevent deformities in the patient’s residual limb.
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Prosthesis with Active Vacuum System
This system utilizes a mechanism that creates a vacuum around the amputated limb of the prosthesis user. The air formed between the liner attached to the patient and the socket applied to the residual limb is pumped and expelled through a valve. This securely fits the prosthesis in place, preventing it from moving.
Active vacuum systems in prosthetics activate the vacuum system with each step, aiding the user in a more comfortable use of the prosthesis.
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Prosthesis with Passive Vacuum System
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The only difference between passive vacuum and active vacuum is the amount of air it retains inside. Instead of a vacuum system that operates with each step, it is a system that maintains a constant 4.5 bar of air inside.
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What is the Active / Passive Vacuum Difference?
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In active vacuum, the air inside is expelled with each step the patient takes. In passive vacuum, this does not occur with every step; it maintains a constant air pressure of 4.5 bars inside.
