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Standard TT Bench Alignment

-5 Deg socket flexion
-5 Deg socket adduction
-top of Px foot is level in both of saggital and frontal plane
-medial border of foot parallel to line of progression


List 4 prosthetic causes for rapid knee flexion

socket too far anterior
heel lever too long
different heel heights
stiff heel action


List 2 types of Symes Prostheses with advantages and disadvantages

1. canadian/VAPC-Advantage: don prosthesis easily, medial door stronger than posterior
2. expandable wall- Advantages: easy to don, no closures, good for the blind. Disadvantages: limited strectch


what causes TT px to appear to be higher than sound leg when sitting?

Posterior brim too high
not enough hamstring relief
incorrect length


What causes anterior distal tibia pressure?

AP to big
Post-brim too low
not enough relief
excessive use of knee extension
heel lever to long
excessive initial socket flexion


List 2 causes of distal limb edema and discoloration

Lack of total contact
short socket


What is the purpose of the 5 Deg of flexion and adduction in the socket during bench alignment?

5 deg of flexion:
-in order to elongate the quads so they are better equipped to accept the full weight of the body and aid in shock absorption during loading response.
5 deg of adduction:
-ensures that the foot is sufficiently inset to create the appropriate varus moment during stance which loads the residual limb properly.