L5010 – Partial foot, molded socket, ankle height, with toe filler. L5020 – Partial foot, molded socket, tibial tubercle height, with toe filler. L5050 – Ankle, Symes, molded socket, SACH foot. L5060 – Ankle, Symes, metal frame, molded leather socket, articulated ankle/foot. L5100 – Below knee, molded socket, shin, SACH foot.
http://www.lcodesearch.com/PROSTHETICS.pdf
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.
http://www.pandocare.com/prosthetic-knees/
The answer, in the broadest sense, is to give the knee joint of. an above-knee prosthesis as many as possible of the weight-bearing func-. tions which the quadriceps muscle group gives the natural knee joint.. The most problematical part of this answer is the qualification: as many.
http://www.rehab.research.va.gov/jour/68/5/2/61.pdf
Prosthetic knees have evolved greatly over time, from the simple pendulum of the 1600s to those regulated by rubber bands and springs or pneumatic or hydraulic components. Now, some knee units have advanced motion control modulated through microprocessors.
http://www.amputee-coalition.org/military-instep/knees.html
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. Often, these knees can have one axis of rotation (single axis) or more than one axis of rotation (polycentric) and are best for lower activity or single speed walkers.
http://www.pandocare.com/prosthetic-knees/
Mechanical devices have been used for above-knee prostheses in a. number of forms for a long time, mostly for locking function (b) (3, 4, 5). Their usefulness for yielding function (c) is limited, because mechanical. friction does not have the very desirable property of speed dependency,
http://www.rehab.research.va.gov/jour/68/5/2/61.pdf
L5683 – Addition to lower extremity, below knee/above knee, custom fabricated socket insert for. other than congenital or atypical traumatic amputee, silicone gel, elastomeric or equal, for use. with or without locking mechanism, initial only (for other than initial, use code L5673 or.
http://www.lcodesearch.com/PROSTHETICS.pdf
The effect which the quadriceps group exerts on the knee joint in. weight bearing is three fold: it can (a) extend the joint, (b) lock it, or. (c) let it yield slowly. To provide function (a) in a prosthetic knee joint. in order to enable an amputee to ascend stairs or inclines in a more natural.
http://www.rehab.research.va.gov/jour/68/5/2/61.pdf
Computer controlled knees. Prosthetic knees are designed for people who have amputations above their knee, and thus lack the knee joint and lower leg. In reality, you need more than just the knee. For one thing, you need a socket, the bucket-shell that encases your limb and attaches to the prosthetic knee joint on top.
http://www.ottobockus.com/Prosthetics/Info-for-new-amputees/Prosthetics-101/Computer-controlled-knees/
In general, there are two kinds of prosthetic knees: non-microprocessor (or “mechanical”) and microprocessor. Mechanical knees all use a mechanical hinge to replace your knee joint. How quickly or easily the hinge swings is often controlled by friction, some type of hydraulic system or a locking mechanism.
http://www.ottobockus.com/Prosthetics/Info-for-new-amputees/Prosthetics-101/Computer-controlled-knees/
what does friction do at the prosthetic knee
A mechanical friction knee bends when as the user naturally walks as the toe of the prosthetic foot is properly loaded.