Download Prosthetics Practice Exam Questions And Answers Latest Update 2025 and more Exams Prosthetics & Orthotics in PDF only on Docsity!
Answers Latest Update 2025
In which portion of stance phase is the prosthetic side in knee extension most likely to occur? A. Initial Contact B. Loading Response C. Mid-stance D. Terminal Stance - - - correct answer ✅A If the amputee complains of difficulty rolling over the ball of the foot, the most likely cause is: A. Excessive DF B. Excessive medial placement of foot C. Excessive lateral placement of foot D. Excessive PF - - - correct answer ✅D Rehabilitation of the BK amputee should ideally be initiated: A. Operatively B. Preoperatively C. One week post-op
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D. Only after wound had healed - - - correct answer ✅B When wrapping a BK limb for shrinkage, it is important that: A. Most of the pressure is in the proximal portion of the limb B. Most of the pressure is in the distal end of the limb C. The elastic only extends up to the head of the fibula. D. BK limbs need not to be wrapped due to small amount of soft tissue - - - correct answer ✅B The purpose for wearing prosthetic socks are: A. Reducing friction between stump and skin B. Allow padding between stump and skin C. Wick sweat away from skin D. All of the above - - - correct answer ✅D The PTB cuff suspension strap derives its suspension over which area:
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A lack of total contact in the PTB limb: A. Has no effect on the fit B. Increases proprioceptive feedback C. Can cause shrinkage D. Can cause distal edema - - - correct answer ✅D Residual limb shape may be described as: A. Conical B. Cylindrical C. Bulbous D. All of the above - - - correct answer ✅D The A-P measurement of a BK amputee is taken in flexion at: A. 5 degrees B. 15 degrees C. 20 degrees
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D. 35 degrees - - - correct answer ✅B M-L dimension of the plaster model when using a soft liner should be: A. Larger by 1/4" B. Smaller by 1/8" C. Larger by 3/16" D. Same as measurement - - - correct answer ✅D What are two advantages in the use of test sockets A. Check fit B. Check for excessive pressure C. Check for bony prominence relief D. All of the above - - - correct answer ✅D The purpose of a compression bandage before fitting of a prosthesis is:
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D. Psychogenic sensation - - - correct answer ✅C In evaluation of a PTB prosthesis, the anterior brim of the socket should extend to the: A. Lower border of the patella B. Upper border of the patella C. Medial tibial plateau D. Point midway between the upper and lower borders of the patella - - - correct answer ✅D When evaluating the unilateral lower-limb amputee's ability to utilize a prosthesis successfully, an important consideration is his: A. General hygiene B. Balance and coordination on crutches C. Limb length and circumference D. Ability to pay for the prosthesis - - - correct answer ✅B
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If the patient complains of prolonged anterior distal tibia discomfort probable cause(s) is: A. Foot too posterior B. Foot too anterior C. Foot too dorsiflexed D. Foot too plantarflexed - - - correct answer ✅A Piston action of a BK PTB prosthesis is a result of: A. Inadequate suspension B. Loose socket fit C. Excessive knee flexion D. Poor alignment - - - correct answer ✅A In order to obtain optimum medio-lateral stability of the PTB prosthesis during locomotion: A. Observe that the pylon is vertical during midstance B. Observe that the ball of the foot is 1 1/2" from the floor at heel strike
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In dynamic alignment, if the knee is forced forward and knee flexion is exaggerated at heel contact, it indicates: A. Socket positioned too far anteriorly B. Excessive posterior tilt of the socket C. Socket positioned too far posteriorly D. Excessive anterior tilt of the socket - - - correct answer ✅A In evaluating the PTB prosthesis during gait, the foot must be flat on the floor at midstance, of which the indication is: A. pylon vertical B. Pylon 5 degrees anterior C. Pylon 5 degrees posterior D. Pylon 8 degrees lateral - - - correct answer ✅A If the amputated limb is quite short, it may be necessary in dynamic alignment to reduce the medial-proximal and lateral distal forces on the stump by: A. moving foot posterior
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B. Moving foot laterally C. Moving foot anterior D. Moving foot medially - - - correct answer ✅B As the outset of the foot is increased in aligning a BK prosthesis, pressures are increased on the following areas of the stump: A. the medial proximal and lateral distal aspect B. The medial distal and lateral proximal aspect C. The medial proximal and medial distal aspect D. The lateral proximal and lateral distal aspect - - - correct answer ✅B When the BK amputee controls the tendency of the knee to flex after heel strike, the pressures are increased on the following aspects of the stump: A. anterior distal and posterior proximal B. Anterior proximal and posterior distal C. Anterior distal and posterior distal D. Posterior distal only - - - correct answer ✅A
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The only way to change the action derived from any one particular heel wedge on the SACH foot is by changing the wedge: A. True B. False - - - correct answer ✅B The heel of the SACH foot takes the place of the gastrocnemius: A. true B. False - - - correct answer ✅B Even pressure is applied over the entire BK stump surface by a socket: A. That is cylindrical in shape B. That is shaped to relieve soft areas C. That is shaped to relieve hard areas D. None of the above - - - correct answer ✅C The scarpa's triangle area extends laterally about 2/3 of the distance across the proximal anterior socket.
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A. True B. False - - - correct answer ✅B Edema is usually found in the proximal portion of the limb A. True B. False - - - correct answer ✅B If the prosthetic foot is set in excessive plantar flexion, the amputee will have the sensation of "walking over a hill" A. True B. False - - - correct answer ✅A The closed end of the total contact socket is planned as a weight bearing surface as much as possible for each patient: A. True B. False - - - correct answer ✅B
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E. ASIS - - -
correct answer ✅C A BK amputee returns to your office complaining that he "stopping" in mid-stance and having trouble rolling over the toe. His gait and alignment were perfect at the time of delivery one week ago. What could be the problem? A. He changed his shoes to a lower heel height B. Suspension cuff not worn tight enough C. Patient is wearing excessive amount of socks D. Patient has started to use a walking cane - - - correct answer ✅A When the foot of a BK is inset, the forces are distributed: A. Proximal/lateral and distal/medial B. Proximal/medial and distal/lateral C. Straight down to the floor D. Distally - - - correct answer ✅B
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With a BK at mid-stance where are the pressures(forces) in the socket in the sagittal plane. A. Distally B. Straight down to the floor C. Proximal/anterior and distal/posterior D. Proximal/posterior and distal/anterior - - - correct answer ✅B What are the main areas of weight bearing in a BK: A. Crest of tibia B. Patella tendon C. Medial tibial flare D. Medial tibial plateau E. B&C - - - correct answer ✅E For a very short BK, why is a PTS advantageous? A. less distal pressure B. Greater step length C. A lighter weight prosthesis
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A. Reduces length of the posterior lever arm of the foot B. Reduces length of the anterior lever arm of foot C. Increases amount of socket flexion D. Increases length of anterior lever arm of foot - - - correct answer ✅B The modification at the medial flare of the tibia is primarily made: A. To gain M-L stability B. To tighten the distal ML of the socket C. To aid in vertical loading in the socket D. To tighten the proximal ML of the socket - - - correct answer ✅C What is the effect on gait of lengthening the posterior lever arm of the foot? A. Tends to flex the knee at heel strike B. Tends to extend the knee at heel strike C. Tends to increase lateral shear forces between foot and floor D. Tends to cause "toe drag" - - - correct answer ✅A
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Function of a prosthesis foot must simulate motion of a normal foot. If PF or heel compression does not occur: A. Knee stability of the amputee will be enhanced B. Knee stability of the amputee will not be affected C. Knee stability of the amputee will be affected D. Plantar flexion is not necessary for a prosthetic foot if the amputee has proper gait training - - - correct answer ✅C When the prosthetic foot is placed in excessive DF: A. The knee is made more stable B. The amputee vaults when walking C. The knee is made unstable D. The ankle is made rigid - - - correct answer ✅C Patients who are converted from side joints and thigh lacer to corsetless PTB commonly exhibit what problem? A. Excessive knee flexion at heel strike
