Infinite Technologies Orthotics and Prosthetics has geographically partnered with Össur, the inventors of the Direct Socket, as the premier facility in the Capital Region to offer this exciting new prosthetic socket technology. With the Direct Socket system, a definitive prosthetic socket can be made right on an amputee’s leg in only a few hours instead of over several weeks. This blog will outline the benefits of direct socket vs traditional socket fabrication methods, science behind the direct socket, who is a good candidate for the direct socket, and how patients are doing in the direct socket.
The traditional method of making prosthetic sockets typically consists of several steps spanning over an average of 16 weeks from initial evaluation to final delivery1. First, a cast or scan is taken of an amputee’s leg. Then, plaster is poured into a mold and modifications to the mold are made by a prosthetist. After the mold is ready, a plastic “check socket” is made then worn by the patient for several weeks. Issues with the fit of the check socket are then reviewed, and then a new check socket is made for and worn by an amputee for several more weeks. After an average of 2-3 check sockets, a definitive socket made of carbon fiber and resin is laminated on a mold of the inside of the patient’s most recent check socket. With the Direct Socket system, a definitive socket is laminated directly on a patient’s leg in only 4 hours, with no molds, no check sockets, and less visits into the office.
There are several advantages with being able to craft a definitive socket in one appointment. These include:
The technology for the direct socket originated in Scandinavia in the 1990s, but has only recently undergone rigorous testing and approval in the United States1. The direct socket laminates a final socket directly on a patient’s leg instead of on a mold.
First, a special casting liner is worn by the amputee, as well as a silicone protective sheath.
The materials for the socket are then applied to the limb, and a resin is added to harden the socket.
After the socket has hardened, a prosthetist draws on trimlines, and you get to walk out with a new definitive socket the same day.
Research shows promising data on how patients are doing in the direct socket compared to traditional sockets.
Recent research demonstrates that amputees reported the direct socket significantly improved their stability, suspension, comfort, and they preferred the socket appearance compared to a socket made with traditional methods2. Not only are patients saying their direct sockets fit and feel better, but they are performing better on outcome measure tests in the direct socket. Direct socket users improved their Timed-Up-and-Go (TUG) Test by an average of 2-3 seconds compared to their baseline scores2. Multiple studies have shown that AMPRO scores, the test which determines K Level, have improved by an average of 2 points when using the direct socket system over a traditionally-made socket1-3.
If you have any questions about the direct socket system, please feel free to reach out to Infinite Technologies Orthotics and Prosthetics via email Contactus@infinitetech.org. Talk with your prosthetist and see if the direct socket is a good option for you, or call (703) 807-5899 to schedule your free consultation today!
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