What is PTB socket?
Socket PTB (Patellar Tendon Bearing) The weight bearing takes place below the patella, at the patellar tendon. The suspension is generated by a belt that is tightened around the distal part of the thigh.
What are the pressure sensitive areas in a PTB socket?
The pressure tolerant areas include the anterior compartment, the medial tibial flare, and the patellar ligament (hence the name PTB). Areas that are not pressure tolerant include the fibular head, the hamstring tendons, and the tibial crest [4].
What is bench alignment?
Bench alignment, which is the assembly of the. various components can be done without the aid. of any special devices. The other two procedures. require the aid of a device or devices if optimum placement of the components is to be achieved.
How long does a prosthetic socket last?
Depending on your age, activity level, and growth, the prosthesis can last anywhere from several months to several years. In the early stages after limb loss, many changes occur in the residual limb that can lead to the shrinking of the limb. This may require socket changes, new liners, or even a different device.
How do prosthetic sockets work?
The prosthetic socket is the device that joins your residual limb (stump) to the prosthesis. The socket is made just for you, according to the condition and shape of the residual limb. In the early stages, wearing a prosthesis may cause some discomfort and redness to the skin.
What holds a prosthetic leg on?
The socket is a precise mold of your residual limb that fits snugly over the limb. It helps attach the prosthetic leg to your body. The suspension system is how the prosthesis stays attached, whether through sleeve suction, vacuum suspension/suction or distal locking through pin or lanyard.
What is prosthesis alignment?
Alignment of a prosthesis is defined as the position of the socket relative to the other prosthetic components of the limb. During dynamic alignment the prosthetist, using subjective judgment and feedback from the patient, aims to achieve the most suitable limb geometry for best function and comfort.
What is static and dynamic alignment?
Static alignment gives us the opportunity to correct issues such as soft foot, gross misalignment and to bring the system to within specifications. Dynamic alignment is the condition of the machinery during sustained operation.
