The Infinite Socket TT

The most comfortable and adjustable custom socket for below-the-knee amputees. Every aspect of the Infinite TT was designed and engineered with comfort and lifestyle in mind. The Infinite TT mimics human anatomy to provide improved function, adjustability and comfort.

Dynamic Response + Shock Absorbing Frame

The frame is made up of three modular and thermoplastic carbon-fiber struts that connect to an adjustable base plate. This frame offers multiple points adjustability and is designed to provide dynamic response flex. This anatomical design mimics anatomy and is engineered for shock absorption and energy return.

LIM Air Bladder System

The LIM Air Bladder System is designed to evenly distribute pressure regardless of volume change and are made with high strength fabrics for improved durability and are backed with a custom-molded thin plastic layer.

Infinite Adapter

The base plate has built-in rotation and slide controls for maximal alignment versatility.

Height Adjustable Petallar-Tendon Bracing System and Posterior Wall

The Infinite TT is height adjustable at the front patellar-tendon bracing system and the posterior wall. This allows for the user to have proper amount of support while liberating the knee to flex.

Anterior-Posterior and Medial-Lateral Stabilization

The dynamic closure system of the Infinite TT is designed to primarily adjust for volume control and function in the posterior to anterior to mimic volume change in the body. The Infinite TT also micro-adjusts in the medial-lateral for improved biomechanical control and support that can be increased or relaxed per activity.


The struts are custom-molded and can be remolded and adjusted to accommodate volume and shape changes of the residual limb.

Form Fitting Soft Shell Cover

The flexible outer cover is designed to encapsulate the frame's proximal components, protect the closure system, protect the user's clothes, and to provide a low friction layer with an aesthetic finish. It's currently available in two colorways: Black exterior with blue royal blue lining and Blue exterior with blue royal blue lining. The cover is removable, replaceable, and washable.

TT Frame Shifter

The entire frame assembly can be slid anteriorly or posteriorly with side-access set screws for fast relief to bony prominence or otherwise optimize fit on the fly.

Height Adjustable Posterior Wall

The Infinite TT is height adjustable at the front petallar-tendon bracing system and the posterior wall. This allows for the user to have proper amount of support while liberating the knee to flex.

Pressure Distributing System

The abrasion-resistant and low-friction textile layer combines with a remoldable thermoplastic material to provide structure and custom-contours. The integrated height-adjustable system is cushioned and equipped with air bladders to improve pressure distribution and protect sensitive areas.

Precise Adjustability

The combination of a modular frame and advanced pressure distribution system enables clinicians and patients to adjust the socket. The LIM Infinite TT socket design makes it easy for you to loosen the fit of the entire socket while sitting, flexing your knee and relaxing or to dial-in the fit when you are active.

Functionality + Comfort

With integrated textiles and adjustable components that can be fine-tuned on the go, the Infinite socket conforms seamlessly to the limb, enabling superior comfort in every situation. With the TT, you can be active with greater ease and comfort than ever before.

Quick Customization

We develop a 3D, digital mold used to custom fabricate an Infinite Socket for your unique shape using only measurements and images. With our proprietary manufacturing process, Lim Capture, and the Infinite Socket’s modular components, we eliminate the need for test sockets and turnaround times for production can be as little as 1 week.

Bryson Miles, Infinite TT user since 2016

Reimbursement Information

In the United States, prosthetists must classify the components of a prosthesis according to standard billing codes, called L-codes. LIM Innovations, as well as other industry manufacturers, suggests L-codes for their products. It is the responsibility of prosthetists to use correct coding when submitting information to Medicare and private insurance companies.

Click here for a full list of suggested codes for the Infinite TT, or call (844) 888-8546 ext. 1 for reimbursement support.