Page 101 - REV T-I JOURNAL INTERIOR ISSUU 18 2-3

ADJUSTABLE ABOVE-KNEE PROSTHETIC INTERFACE 177

Subject Bock Healthcare, Duderstadt, Germany). The subject
Subject inclusion was unilateral TFA, either gen- was physically capable of completing the functional
der, any ethnicity, between 18 and 65 years of age, testing protocol. The subject had normal cognitive
and <113.4 kg. Exclusion criteria included non-TFA ability and was able to provide informed consent and
level, <18 and >65 years of age, and >113.4 kg. The socket fitting feedback to investigators.
subject identified had the following characteristics: Interventions Tested
male, 24 years old, right unilateral TFA, 1.7 m, 70.3 kg, 1. IRC. This design is characterized by a high
and a BMI of 24 kg/m . The subject elected for limb (proximal) brim that medially contains the ischio-
2
amputation at age 19, secondary to osteosarcoma. pubic ramus and is the SOC. The socket consisted of
His activity level was K4 per his medical record. No a rigid thermoplastic material. This was suspended
other known injuries were present. Subject exhibited with a gel pin-locking liner. The subject was casted
upper and LE active range of motion within normal and fit into a custom SOC socket over the same liner
limits. His current prosthesis included a pin-lock gel he had been using to eliminate confounding and the
liner, Infinite Socket™ (LIM Innovations, San Fran- potential introduction of dermatologic issues.
cisco, CA, USA), Genium knee, and Triton foot (Otto

Figure 1. Interventions tested. Pictured left is the standard of care socket with the 5-ply sock and the pin system. Pictured right is the
Infinite adjustable socket.