Download Prosthetic Prep Exam Questions and Answers: A Comprehensive Guide for Students and more Exams Prosthetics & Orthotics in PDF only on Docsity!
Latest Update 2025
The Ertl Procedure is known as an osteomyoplastic amputation reconstruction that performs a bridge between what: - - - correct answer ✅Tibia and the fibula A below knee amputee is seen in your clinic and states he feels anterior/distal discomfort in his prosthetic socket. How would you address this problem? - - - correct answer ✅Extend the prosthetic socket Add pre-tibial pads to the prosthetic socket A below the knee amputee is seen in clinic and states he has posterior knee or hamstring discomfort. How would you address this problem? - - - correct answer ✅Lower the posterior medial brim on the prosthetic socket. Flex the prosthetic socket. Align prosthetic foot more posterior in relation to the prosthetic socket. Which level(s) of amputation may lead to an equinus gait deformity: - - - correct answer ✅Lisfranc amputation
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Chopart amputation Transmetatarsal amputation A below knee amputee presents wearing a PTB style endoskeletal prosthesis with general knee pain and distal end pressure. The patient doffs her prosthesis and liner, upon examination of her residual limb you note redness on the distal tibia and inferior aspect of the patella bone. What would be the most logical clinical action(s) you could take at this point in addressing this problem: - -
correct answer ✅Add a gastroc pad to prosthetic socket Add a 1 ply prosthetic sock over liner Myodesis can be described as: - - - correct answer ✅The suturing and permanent attachment of a muscle to a bone. Which of the following is not part of a Symes amputation procedure; - - - correct answer ✅Transmetatarsal amputation
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65mm inferior to the perineum. What do yo attribute to the cause of this deviation: - - - correct answer ✅The posterior wall does not have ischial containment k With a Krukenberg procedure what muscle is the driver of the pincer grip: - - - correct answer ✅Pronator teres What would be a good quality(s) to look for in a prosthetic foot for a TT amputee who is a K2 designated household ambulator that utilizes his prosthesis efficiently during the day but fatigues in the evening and buckles at the knee secondary to quadriceps weakness. - - - correct answer ✅Foot that progresses rapidly into plantar flex ion during loading response. Heel should have a relatively soft durometer. A TT patient is seen presenting with a traditional exoskeletal PTB prosthesis with a SACH foot. Patient states that see feels like to prostheses is throwing her knee forward as soon as the heel firmly contacts the ground. She has worn this prosthesis comfortable for two years until one month ago. What is the first clinical action you
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should tale at this time in the appointment: - - - correct answer ✅Check to see if the patient switched to a shoe with a higher heel height compared to what she used to wear. The Krukenburg procedure is used at times in developing countries where expensive prosthesis are not attainable. What other patient population would this be potentially used for. - - - correct answer ✅Blind patients with bilateral below elbow amputations. Failed prosthetic use for bilateral below elbow amputations. A TR patient is seen in your clinic. Patient is inquiring as to which terminal device would be best for picking up a small coin from a table Which device would be recommend: - - - correct answer ✅5XA What are simple options(s) for increasing the ease of pre- positioning the prosthetic elbow - - - correct answer ✅moving the forearm lift tab anterior/distally check level of resistance on cable housing
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A TF patients seen in your clinic It is noted that as he ambulates with a circumducted gait. Select ALL possible causes: - - - correct answer ✅Prosthesis height is longer than his sound side ischial tuberosity to floor measurement. Prosthetic suspension is not adequate The user does not have adequate hip flexor strength Prosthetic foot is plantar flexed excessively. ATF patient isseen in your clinic. Instance, the prosthetic foot"smears" externally as she simultaneously abducts her prosthesis whereby advancing forward in the sagittal plane. She complains of low back pain as well. What is a prosthetic cause. - - - correct answer ✅Not enough flexion is build into the socket. A patient with an above knee amputation has a prosthesis. During gait analysis you find that she has knee instability while standing and you see knee buckling with any weight shift. You suspect the cause of the instability is. - - - correct answer ✅Prosthetic knee set too far anterior to the TKA line.
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Transtibial Prosthic socket that are excessively extended casue excessive pressure on what areas? - - - correct answer ✅Anterior proximal, posterior distal True or false outsetting the prosthetic foot in a transtibial socket increases medial distal and lateral proximal pressure - - - correct answer ✅True this causes a valgus moment at the knee A four quarter amputaiton removes what structures? - - - correct answer ✅Arm, clavical and scapula In a transtibial patient you notice a mild extension moment at the knee in stance phase. what could be the cause, note alignment is proper? - - - correct answer ✅Prosthetic Heel is to soft, this will cause the ground reaction force to be anterior to the knee whereby causing an extension moment in stance. what choosing if a prosthetic pateint is a gel liner canidate, which options would assist you in your decision? - - - correct answer ✅Hygiene- optimal area for bacteria breeding hand dexterity- may cause donning to be difficult
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What muscle would you expect to be the weakest in an above knee amputation? - - - correct answer ✅hip adductor- due to their transection, the shorter the amputation the weaker expected. hip extension may be sligthly weaker due to the loss of adductor magnus whcih aids in extenions. In an AK patient, when ambulating the patient complains of knee instability. What alignment change could assist in regaining knee stability? - - - correct answer ✅moving the prosthetic knee posterior to the socket When flexing an AK socket to accomodate a hip flexion contracture what cocurrent alignment should be made? - - - correct answer ✅move the prosthetic knee posterior-- to keep the knee stable In a knee disarticulation amputee what is the concern is a cosmetic concern - - - correct answer ✅what the knee extends too far out past the sounds side with sitting or kneeling-- not a trun leg length discrepancy when abulation a patient complains of knee instability, what alignment change could possibly assist in regaining knee stability - -
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correct answer ✅extend the prosthetic socket, by making an aigular adjustment moving the prosthetic socket into extension we can decrease ground reaction forces running posterior to the knee center whereby promoting knee stability. when making an angular change utilizing endoskeletal componentry it is necessary to - - - correct answer ✅loosen bolt opposite direction of desired angulation and tighten the bolt on the side of the desired angulation. Choose all the benefits of a knee disarticulation over an above knee amputation. - - - correct answer ✅rotational control natural weight bearing surface muscle balance between adductors and abductor larger surface area for prosthetic socket when removing endoskeletal prosthetic componentry for adjustment, how do you saveyour orginal alignment. - - - correct answer ✅completely back out two adjacent bolts
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the gait cycle is composed of what - - - correct answer ✅heel strike on one side followed by heel strike on the same side a transhumeral patient seen in clinic, they are utilizing a body powdered prosthesis with a hosmer mechanical elbow and complain that he can operate it throughout it full range of motion but it requires too much effort, what can be done to remedy this? -
correct answer ✅install a spring lift assist--> you will decrease and amount of effort required to flex the prosthetic elbow thorughout the ROM What is a simply option for prepositioning the prosthetic elbow in flexions, for a transhumeral amputee utilizing a body powdered prosthesis who lacks glenohumeral flexion strength and biscapular abduction strength but can operate an elbow lock. - - - correct answer ✅Move the proximal base plate and retainer on humeral section anterior--> by moving the control cable retainer on the humeral section anterior you move the pull angle anterior to bridge the elbow joint whereby decreasing the force necessary to move the forearm section about the humeral section
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during many amputations the surgeon will perform a myoplasty, what is this? - - - correct answer ✅attaching muscle to muscle. true or false, when fabricating Transradial figure 8 harness, it is necessary to incorporate elastic material to the control strap? - - - correct answer ✅False- in a figure 8 harness inelastic matral must be utillzed to capture maximal cable excursion where as excursion will be lost within the elastic material the inverted Y strap on a figure 8 harness should be located what on the body - - - correct answer ✅delto-pectoral groove what muscle is responsible for scapular elevation? - - - correct answer ✅Trapezius (upper traps specifically) a transfemoral patient is seen in clinic, upon doffing the suction socketyou notice red, wart like formation and crakced skin distally, choose the name and cause of this condition? - - - correct answer ✅Verrucouse hyperplasia , cause by lack of contact
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When recommending a ischial containment socket what are some of the biomachanical goals that accompany this socket? - - - correct answer ✅The ishcial seat provides a weight bearing surface, By containing that ischium we decrease distal lateral discomfort in weightbearing with upper extremity majority of supination and pronation occur at with joint. - - - correct answer ✅distal radioulnar and proximal radiounlar in a transfermoral patients socket fitting evaluation that ischial- turbeosity is not located on the seat but rather further down the socket, what could you do to remedy this? - - - correct answer ✅Add a prosthetic sock add padding adjacent to the scarpus triangle standard bench alignment of a transtibial prosthesis with a SACH foot in the coronal plane is? - - - correct answer ✅0-12mm inset in the coronal plane helps aid in mild genu varum moment at midstance wich keeps the body centerof mass over the base of support " the prosthetic foot"
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In a below elbow amputation the muscles that are transected are? -
correct answer ✅Flexor Carpi Radialis brachioradialis pronator quadratus A transtibial patient seen in clinic, the patient has been utilizing a Transtibial prosthesis successfully for 10 years but the patient has a grade 1 osteocondral defect "OCD" to his medial femoral condyle that is painful in weight bearing. What alignment could you incorporate to assist in the patient discomfort. - - - correct answer ✅outset foot, by outsetting the foot you can create geun valgum moment at the knee in weight bearing, by creating an external geun valgum moment you can assist in opening the medial knee compartment and pressure over the OCD. Many prosthetic knees require the toe to be loaded and then un weighted in order to transistion from stance phase to swing phase. why would recommending two knees that function in the way toa bilateral TF amptuee be contraindicated. - - - correct answer ✅Becuase the patient wont be able to sit, because they would not be able to unlock both knees.
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when evaluating a new trans metartsal amputee what deofrmity of the foot and ankle complex is typical without tendon transfer? - - - correct answer ✅equino varus-- peroneus longus is transected, this causes weakness of pronators allowing suponators muscle to override the foot and ankle complex in an equino varus deofrmity. the most accurate description of a hydraulic single axis knee is? - - - correct answer ✅fluid prosthetic knees fall into two categories (pueumatic- gas) (hydraulic- liquid) therefore a hydrulic or pnrumatic knee utilizes "fluid" resistance to modify TF prosthetic all fo the following muscles make up the pes anserinus execpt? - - - correct answer ✅semimembranous-- inserts along the posterior aspect of the midial condyle of the tibia where the pas anserinus inserts on the medial surface of the superior part of the tibia when evaluating a TF prosthetic knee, which type of resistance is most adversely effected by cold enivornmental changes? - - - correct answer ✅hydrualic fluid becomes more viscous in cold temps, making response of the prosthetic knee sluggish in response to cold temps
Latest Update 2025
in TF prosthetics alignment the relationship between the posterior socket shelf and the lateral wall is referred to as - - - correct answer ✅the adduction angle, the Q angle is the angle between the quad muscle and the patella tendon. when determining the corredect length of the prosthesis what bony landmark is NOT used? - - - correct answer ✅The greater trochanter is not a bony landmark used for proper height measurment, the ASIS, PSIS, and Iliac crest along with the medial plateau are all used to establish the proper length of the prosthesis a TT patient is seen in a clinic, at heel strike the SACH prosthetic foot retates externally. what would cause the gait deviation? - - - correct answer ✅The prosthetic heel is too firm-- if the prosthetic heel is too firm, at heel strike instead of absorbing the energy, the force is translated laterally causing rotation externally. Note this cant also be caused if a SACH foot is squeezed into a shoe too small. The tight fitting shoe does not allow for the proper compression of the SACH hell, essentially fasely creating a "firm heel"
