What is a disadvantage of the TT TSB socket design?

The TT TSB (Transtibial Total Surface Bearing) socket design has the disadvantage of not effectively relieving pressure for bony patients. This is particularly important because patients with prominent bony anatomy can experience discomfort or pain if the socket does not adequately accommodate their unique shape. The TSB design is meant to achieve total surface bearing, which focuses on distributing forces more evenly across the surface of the residual limb; however, if a patient has prominent bony landmarks, this design can still create localized pressure points that lead to discomfort or skin issues.

This characteristic highlights the importance of careful assessment and customization of the socket fit, especially for patients who may not have adequate soft tissue coverage to promote comfort and health. The challenge with this socket design lies in its reliance on the residual limb's overall volume and shape, further emphasizing the need for careful fitting to prevent the issues that arise with bony anatomy.