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General Prosthetic Questions For ABC Written Exam – Questions & Answers
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General Prosthetic Questions For ABC Written Exam – Questions & Answers
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General Prosthetic Questions For ABC Written Exam –Questions & Answers
Bench Alignment for TT Correct Ans - - 5*to 10* flexion
-2* to 5* adduction
-1/2" to 1" inset
-3* to 5* outward rotation or parallel to the LOP
-37mm posterior (18-65mm range)
-1/4" anterior from ankle bolt to midline
Bench Alignment for TF Correct Ans - - 5* flexion + flexion contracture
- Long's line + 2* to 5 *
-outset foot 1" from ishium + 1*-2* ext
-5* external rotation of the knee
Cuff strap placement Correct Ans - -1cm posterior and 1cm proximal
to midline at PTB level
Silesian Belt placement Correct Ans - -1/4" posterior and proximal to
G.T. (Lateral)
-1/4" proximal and medial to bisection (Anterior)
Scrapa's Triangle Correct Ans - -Ingiunal Ligament
-Sartorious
-ADDUCTOR Longus
Cycle the Elbow in TH prosthesis Correct Ans - -3/4" excursion
- 2lbs force
Operation of TD and Elbow lift (Excursion) Correct Ans - -2 1/2" to lift
elbow
-2" for TD
Starting point for EFA Correct Ans - - 1" distal and 1" anterior to elbow
center
Hip Bench Alignment Correct Ans - -joint anterior to knee center 25-
50mm
, -reference line knee center to 37mm posterior to heel
-1/2" anterior and 1" proximal to GT
Subischial Triangle Correct Ans - -Inferior Pubic Ramus
-Gracilis
-Semitendenosis
Adduction of the lateral wall of the socket Correct Ans - Re-establishes
the normal angulation (6-7*) of the femoral shaft, thereby placing the hip
abductor muscles under their normal operation tension
Proper contouring of the lateral wall Correct Ans - -Allows for even
distribution of force over the lateral aspect of the residual limb, specifically
between the greater trochanter and the lateral distal aspect of the femur
-Relief for the lateral distal end of the femur and for GT
High medial wall Correct Ans - -Proximal medial wall must be high
enough to apply counter pressure to maintain good contact between the
femur and the lateral wall
Proper mediolateral dimension of the socket at ischial level Correct Ans -
-too large an ML will reduce the effectiveness of the lateral and medial walls to
stabilize the femur
-Divide the circ of the thigh by pi and subtract 1/4"
Proper anteroposterior dimension of the socket Correct Ans - -too
large an AP will tend to permit the IT to be displaced forward, off of the ischial
seat.
-correct AP determined by subtracting 1/2" from the anatomically determined
distance between the ADDUCTOR longus tendon and the IT
Pressure on Scarpa's Triangle provides Correct Ans - -relieves
pressure at initial contact
-comfort for sitting
-relieves the ADDUCTOR longus tendon
-controls rotation
-keeps pelvis from rotating
-IT on the seat
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