PROSTHETIC CPM CERTIFICATION
EVALUATION QUESTIONS AND COMPLETE
SOLUTIONS GRADED A+
⩥ Frontal TF dynamic alignment goals.
Answer: Adequate suspension
Width of base of support
Control of pelvis during prosthetic stance
Quality and pattern of prosthetic swing
⩥ Max sock ply before new socket is indicated.
Answer: 15-20 ply
⩥ TT measurements.
Answer: Circumference every 1", starting 2 inches proximal to MPT
AP @ MPT and Popliteal Fossa
ML@ Femoral Condyles
Proximal ML above Femoral Condyles
Limb Length
Tibial Length
MPT to Floor
,Shoe Size/Heel Height
⩥ TF measurements.
Answer: Ischial tuberosity to distal end
Ischial tuberosity to floor
Knee center to floor
Foot length
Hip flexion contracture
⩥ If a TF patient is exhibiting a medial whip during swing phase what is
the likely cause.
Answer: knee is externally rotated --> need to internally rotate
⩥ If a TF patient is exhibiting a lateral whip during swing phase what is
the likely cause.
Answer: knee is internally rotated --> need to externally rotate
⩥ Where should the TKA Line fall for a TF patient?.
Answer: Anterior to the ankle bolt (posterior 1/3 of foot)
Anterior to the KC by 5-15mm
⩥ How should you set the socket adduction and flexion angle for a TF
patient with a 10 degree hip flexion contracture..
, Answer: Posterior and Medial trim line should be parallel to the floor
(adduction)
15 degrees of socket flexion
⩥ Which screw do you tighten to flex a TT socket?.
Answer: anterior
⩥ Which screw do you tighten to extend a TT socket?.
Answer: posterior
⩥ Which screw do you tighten to flex a TF socket?.
Answer: posterior
⩥ Which screw do you tighten to extend a TF socket?.
Answer: anterior
⩥ Which screw do you tighten to DF the foot?.
Answer: anterior
⩥ Which screw do you tighten to PF the foot?.
Answer: posterior
EVALUATION QUESTIONS AND COMPLETE
SOLUTIONS GRADED A+
⩥ Frontal TF dynamic alignment goals.
Answer: Adequate suspension
Width of base of support
Control of pelvis during prosthetic stance
Quality and pattern of prosthetic swing
⩥ Max sock ply before new socket is indicated.
Answer: 15-20 ply
⩥ TT measurements.
Answer: Circumference every 1", starting 2 inches proximal to MPT
AP @ MPT and Popliteal Fossa
ML@ Femoral Condyles
Proximal ML above Femoral Condyles
Limb Length
Tibial Length
MPT to Floor
,Shoe Size/Heel Height
⩥ TF measurements.
Answer: Ischial tuberosity to distal end
Ischial tuberosity to floor
Knee center to floor
Foot length
Hip flexion contracture
⩥ If a TF patient is exhibiting a medial whip during swing phase what is
the likely cause.
Answer: knee is externally rotated --> need to internally rotate
⩥ If a TF patient is exhibiting a lateral whip during swing phase what is
the likely cause.
Answer: knee is internally rotated --> need to externally rotate
⩥ Where should the TKA Line fall for a TF patient?.
Answer: Anterior to the ankle bolt (posterior 1/3 of foot)
Anterior to the KC by 5-15mm
⩥ How should you set the socket adduction and flexion angle for a TF
patient with a 10 degree hip flexion contracture..
, Answer: Posterior and Medial trim line should be parallel to the floor
(adduction)
15 degrees of socket flexion
⩥ Which screw do you tighten to flex a TT socket?.
Answer: anterior
⩥ Which screw do you tighten to extend a TT socket?.
Answer: posterior
⩥ Which screw do you tighten to flex a TF socket?.
Answer: posterior
⩥ Which screw do you tighten to extend a TF socket?.
Answer: anterior
⩥ Which screw do you tighten to DF the foot?.
Answer: anterior
⩥ Which screw do you tighten to PF the foot?.
Answer: posterior
