Podcast
Questions and Answers
Where does the weight bearing take place in a Patellar Tendon Bearing (PTB) socket?
Where does the weight bearing take place in a Patellar Tendon Bearing (PTB) socket?
How is the suspension generated in a Patellar Tendon Bearing Supracondylar (PTB SC) socket?
How is the suspension generated in a Patellar Tendon Bearing Supracondylar (PTB SC) socket?
When is the Patellar Tendon Bearing Supracondylar Suprapatellar (PTB SC SP) socket indicated?
When is the Patellar Tendon Bearing Supracondylar Suprapatellar (PTB SC SP) socket indicated?
What type of amputees is the PTB socket good for?
What type of amputees is the PTB socket good for?
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In what scenario is it possible to relieve sensitive areas more easily in a PTB socket?
In what scenario is it possible to relieve sensitive areas more easily in a PTB socket?
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What are the indications for using a Patellar Tendon Bearing (PTB) socket?
What are the indications for using a Patellar Tendon Bearing (PTB) socket?
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What type of socket design allows for build-ups to be applied to the inner liner, facilitating easier donning and doffing for an amputee with a bulbous residual limb?
What type of socket design allows for build-ups to be applied to the inner liner, facilitating easier donning and doffing for an amputee with a bulbous residual limb?
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Which type of socket is indicated for all types of stumps and generates suspension through tight adhesion/friction between the stump and a silicon liner?
Which type of socket is indicated for all types of stumps and generates suspension through tight adhesion/friction between the stump and a silicon liner?
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Which type of socket reduces pistoning of the socket on the residual limb by providing total contact throughout the gait cycle?
Which type of socket reduces pistoning of the socket on the residual limb by providing total contact throughout the gait cycle?
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Which type of socket is believed to be more comfortable because overall socket pressure is reduced as the entire surface of the residual limb accepts weight?
Which type of socket is believed to be more comfortable because overall socket pressure is reduced as the entire surface of the residual limb accepts weight?
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Which type of socket design is noted to have better suspension due to its integration in the socket using locking pins or suction?
Which type of socket design is noted to have better suspension due to its integration in the socket using locking pins or suction?
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Which type of socket is not suitable for primary amputees due to volume changes in post-amputation?
Which type of socket is not suitable for primary amputees due to volume changes in post-amputation?
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Which type of sockets are indicated for all types of stumps and uniformly distribute weight over the entire residual limb?
Which type of sockets are indicated for all types of stumps and uniformly distribute weight over the entire residual limb?
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Which type of socket design allows for build-ups to be applied to the inner liner, facilitating easier donning and doffing for an amputee with a bulbous residual limb?
Which type of socket design allows for build-ups to be applied to the inner liner, facilitating easier donning and doffing for an amputee with a bulbous residual limb?
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Which type of sockets are not suitable for patients with short residual limbs, less than 10cm long?
Which type of sockets are not suitable for patients with short residual limbs, less than 10cm long?
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Which type of prosthesis pistons are some amputees unable to tolerate due to required pressure on their patella tendon?
Which type of prosthesis pistons are some amputees unable to tolerate due to required pressure on their patella tendon?
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Study Notes
Weight Bearing in PTB Socket
- Weight bearing occurs primarily on the patellar tendon during the use of a Patellar Tendon Bearing (PTB) socket.
Suspension in PTB SC Socket
- Suspension in a Patellar Tendon Bearing Supracondylar (PTB SC) socket is generated through the engagement of the femoral condyles and the supracondylar area, creating a secure fit.
Indications for PTB SC SP Socket
- The PTB SC Suprapatellar (PTB SC SP) socket is indicated for cases where additional stability is needed, particularly for patients with high transfemoral amputations.
Suitable Amputees for PTB Socket
- PTB sockets are beneficial for unilateral transtibial amputees as they provide necessary support and weight distribution.
Relieving Sensitive Areas in PTB Socket
- Sensitive areas can be more easily relieved in a PTB socket when build-ups are strategically placed within the socket's design.
Indications for PTB Socket Usage
- Indications for using a Patellar Tendon Bearing (PTB) socket include transtibial amputation and need for load distribution on the residual limb.
Socket Design for Bulbous Residual Limb
- A socket design that allows for build-ups on the inner liner is advantageous for easier donning and doffing for amputees with a bulbous residual limb.
Socket Generating Suspension via Friction
- A socket that is indicated for all types of stumps and generates suspension through tight adhesion/friction with a silicone liner is the PTB socket.
Socket Reducing Pistoning
- The PTB socket is designed to reduce pistoning on the residual limb by ensuring total contact throughout the gait cycle.
Comfort in Socket Design
- A socket that is believed to provide more comfort does so by allowing overall socket pressure to reduce, enabling the entire surface of the residual limb to accept weight evenly.
Socket with Better Suspension
- Socket designs integrating locking pins or suction are noted for their enhanced suspension properties.
Ineligibility for Primary Amputees
- Certain sockets are not suitable for primary amputees due to potential post-amputation volume changes affecting fit and comfort.
Uniform Weight Distribution Sockets
- Sockets indicated for all types of stumps are designed to uniformly distribute weight over the entirety of the residual limb.
Not Suitable for Short Residual Limbs
- Sockets that are ineffective for patients with residual limbs shorter than 10 cm are typically those requiring more volume and secure grip.
Tolerance Issues with PTB Prosthesis Pistons
- Some amputees may struggle with PTB prosthesis pistons due to excessive pressure exerted on their patellar tendon.
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Description
Learn about transtibial sockets including Patellar Tendon Bearing (PTB) and Patellar Tendon Bearing Supracondylar (PTB SC) sockets for lower limb prosthesis. Understand weight bearing, suspension, and other key features.
