Transtibial Sockets

Another variant of the patellar-tendon bearing socket, which also encloses the patella to further restrict some motion and reduce knee hyperextension (Murphy, 2013; Spires, Kelly & Davis, 2013).

Patellar tendon bearing socket

Supracondylar socket

Supracondylar/suprapatellar socket

Total surface bearing socket

Allows pressure and weight bearing from the patellar tendon, medial tibial flare, popliteal fossa and posterior wall (Murphy, 2013). This helps to ensure that less pressure tolerant areas are relieved, such as the tibial crest, distal end of tibia and fibula, and fibular head (Spires, Kelly & Davis, 2013).

Variant of the patellar-tendon bearing socket, with extension proximally above the knee. (Murphy, 2013; Spires, Kelly & Davis, 2013). Used for knees with medial/lateral instability (Murphy, 2013).

Distributes loading equally over the entire surface of the residual limb (Murphy, 2013; Spires, Kelly & Davis, 2013)

References:

Fitzsimons, T. (2010). PTB sockets. Retrieved from: http://www.austpar.com/portals/prosthetics/transtibial_sockets.php

Murphy, D. (2013). Fundamentals of Amputation Care and Prosthetics. New York: Demos Medical Publishing

Spires, M. C., Kelly, B., & Davis, A. (2013). Prosthetic restoration and rehabilitation of the upper and lower extremity. New York: Demos Medical Publishing

Physiopedia (n.d.). Prosthetics. Retrieved from: https://www.physio-pedia.com/Prosthetics

Patellar tendon bearing socket (Physiopedia, n.d.)

Supracondylar socket (Physiopedia, n.d.)

Supracondylar/ suprapatellar socket (Physiopedia, n.d.)

Patella tendon bearing socket & total surface bearing socket (Fitzsimons, 2010)