Transtibial Sockets

Question 1

The patella tendon is the only major weight-bearing surface utilized in a properly designed PTB socket.

Answer 1

False

Question 2

The goal of transtibial prosthetic socket design is to make sure all pressure tolerant areas are being utilized to support the patient’s weight and all non-tolerant weight bearing areas are relieved from pressure to prevent the patient from feeling pain.

Answer 2

True

Question 3

The bent knee type prosthesis is designed for a flexion contracture greater than:

Answer 3

45 degrees

Question 4

The residual limb most suitable for fitting with a hard socket is one that:

Answer 4

• is stable in volume
• presents with no sharp bony prominences
• has adequate soft tissue coverage

Question 5

In the design for a patella tendon bearing (PTB) socket:

Answer 5

• the total contact fit is intended to provide relief over non-pressure tolerant areas
• support the body’s weight over the pressure tolerate areas of the limb
• the anterior trim line extends proximal to the patellar ligament incorporating a shelf onto which the patellar ligaments rests, providing a weight-bearing surface
• the medial tibial flare is also used as a primary weight-bearing area

Question 6

The total surface bearing socket is a socket design that is modified version of the PTB socket that does not place significant pressure over the patellar bar, popliteal, or medial flare areas.

Answer 6

True