ABC Prosthetic Written Exam Prep With Correct Answers

The Ertl Procedure is known as an osteomyoplastic amputation reconstruction that performs a bridge between what: - Answer Tibia bridged with fibula A BK amputee feels anterior/distal discomfort in his prosthetic socket. How would you address the problem: - Answer 1. extend the prosthetic socket 2. add pretibial pads to the socket A BK amputee states he has posterior jnee/hamstring discomfort. How would you address the problem? - Answer 1. Lower the posterior medial brim 2. Flex the socket 3. Align the prosthetic foot more posterior in relation to the socket What level of amputation may lead to equinus gait deformity? - Answer Lisfranc, Chopart, Transmetatarsal Myodesis can be described as: - Answer The suturing and permanent attachment of a muscle to a bone. What are parts of a Symes amputation: - Answer 1. removal of the distal aspect of the Malleoli 2. Placement of a thick heel pad 3. Amputation through the articulation of the ankle A BK patient wearing a PTB style endoskeletal prosthesis has general knee pain amd distal end pressure. There is redness on the distal tibia and inferior aspect of the patella bone. How do you resolve this? - Answer 1. Add a gastroc pad to socket 2. add a 1 ply px sock over the liner Myoplasty can be described as: - Answer The suturing or permanent attachment of a muscle to another muscle. What are 2 advantages of myodesis over myoplasty with regards to amputation. - Answer 1. Decreased rate of muscular atrophy 2. Decreased rate of antagonistic muscular imbalances During normal heel strike, the forward hip is how flexed? - Answer 25 deg flexed Which style of muscular tissue management in a TH amputation would be of greatest advantage to a myoelectric prosthesis candidate: - Answer Myodesis A TF patient exhibits lateral/proximal loss of contact in stance. Also the lateral wall is superior to the greater trochanter, the anterior wall contours to the adductor longus tendon, the posterior socket does not encompass the ischial tuberosity, the medial wall is located 65mm inferior to the perineum. What is the cause of deviation? - Answer The medial wall is located too far inferior to the perineum With a Krukenberg procedure what muscle is the driver of the pincer grip: - Answer pronator teres What qualities of a foot would be good for a TT K2 amputee that fatigues in thr evening and buckles at the knee secondary to quadriceps weakness: - Answer 1. A foot that progresses rapidly into plantar flexion during loading response 2. Heel should have a relatively soft durometer A TT patient with exoskeletal PTB px with SACH foot feels like she is being thrown forward as soon as her heel contacts the ground. She has worn the PX for 2 yrs until 1 month ago. What should you do? - Answer Check to see if the patient switched to a shoe with a higher heel height The Krukenburg procedure is used at tiems in developing countries where expensive px are not attainable. What other patient populaation would this be potentialy used for - Answer 1. Blind patients with bilateral below elbow amputations 2. Failed prosthetic use for bialteral below elbow amputations What terminal device is best for picking up coins off a table? - Answer a canted device: 5, 5X, 5XA, 5XTi, 8, 8X, 88x, What terminal device is best for holding round objects/tools? - Answer a lyre hook: 555, 555-SS What therminal device s are work hooks? - Answer 3,6,7,7LO What are two variable force hooks taht have lyre shaped fingers, do not use ruber bands, and permit preselction of pinch force? - Answer APRL Voluntary Closing Hook and the Sierra 2-Loadi Voluntary Opening Hook What are simple options for increasing the ease of pre-positioning the prosthetic elvow in flexion, for a TH amputee utilizing a body powered px who lacks glenohumeral flexion and biscapular abduction strentth but can operate a elbow lock: - Answer 1. have the forearm lift tab located distally/anterior to move the pull angle to decrease force needed 2. check the level of resistance in the cable housing What bony landmark is utilized for weight bearing prosthesis in a hip disarticulation? - Answer Ischial Tuberosity What is an option for pre positioning the prosthetic elbow in flexion, for a TH amputee utilizing a triple control body powered prosthesis but lacks glenohumeral flexion adn biscapular abduction strength but can operate an elbow lock? - Answer Change the triple control to dual control, switch split housing to single housing, utilize ballistic motion for forearm lift. Why is choosing a SACH foot with a firm heel durometer not advised for TT patients with poor prosthetic side knee stability? - Answer It will decrease knee stability A BK patiet has lateral trunk bending at mid stance on the px side. What could be the cause of the gait deviation? - Answer 1. Px is too short 2. Residual limb pain 3. Prosthesis is too long Would lateral trunk bending be casued by weak quadricepts? - Answer NO A TF patient ambulates with a circumducted gait. What are the possible causes? - Answer 1. Px height is longer that his sound side IT to floor 2. PX suspension is inadequate 3. User has weak hip flexors 4. Px foot is plantar flexed exessively