Term
| What are the major requirements of a good prosthetic foot? |
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Definition
| Want it to adapt to uneven surfaces, provide shock absorption, and allow for stability. |
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Term
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Definition
| Has a wooden keel with a foam wedge, coated in poured foam. It allows movement in PF/DF and med/lat directions. |
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Term
| What does the SACH foot cushioned heel do? |
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Definition
| It compresses w/ WB and acts as a PF moment. |
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Term
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Definition
| no moving parts (so it won't make noises or break), simulates PF |
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Term
| SACH foot disadvantages (2) |
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Definition
| no accommodation to uneven surfaces, heel can lose springyness then you need to replace the foot. |
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Term
| Describe a single axis foot. |
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Definition
| Allows PF/DF only. Has a PF bumper. |
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Term
| What does the PF bumper do in the single axis foot? |
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Definition
| prevents excessive PF and provides some cushioning. |
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Term
| What are some disadvantages to the multi axis foot? |
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Definition
| Stability is lost with each axis addition. It allows stability only in the end range of each direction. |
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Term
| What are the advantages of a multi axis foot? |
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Definition
| It allows movement in all planes, good for the pt with good stability control. |
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Term
| What is an energy storing foot good for? |
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Definition
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Term
| Explain how an energy storing foot works. |
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Definition
| Once the toe has been loaded, the energy in the 'spring' mechanism is released for push-off. |
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Term
| What is more expensive; a SACH foot or a multi axis foot? |
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Definition
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Term
| What are the two types of shank you can have on a BK prosthesis? |
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Definition
| exoskeletal an endoskeletal |
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Term
| which is easier to care for; exo or endoskeletal prostheses? |
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Definition
| exo - it's a hard resin on the outside, so it's easy to clean. |
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Term
| What are the pressure-tolerant areas of the socket in WB?(5) |
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Definition
| patellar tendion, medial flare and medial shaft of tibia, lateral shaft of the fibula, pretibial muscle mass between tibial creast and fibula, popliteal fossa. |
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Term
| Where would redness be acceptable on the residual limb? |
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Definition
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Term
| If the socket is too deep, what will you see? |
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Definition
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Term
| Is the tibial tubercle a noremal site of redness? |
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Definition
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Term
| Which of the four walls is the primary WB wall? |
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Definition
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Term
| Where do you put the medial wedge in a suspension socket? What is its function? |
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Definition
| You stick it in the cuff next to the medial condyle. It holds the socket on the limb by 'grabbing' above the femoral condyle. |
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Term
| Describe the sleeve suspension system. Who would it not be good for? |
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Definition
| Elastic tubing holds the cuff on. Low-tech, but not good for the more active pt. |
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Term
| Describe the pin/lock system? |
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Definition
| the sleeve has a pin on it, that you stick into a hard socket which holds it in place with a lock in the bottom of the socket. |
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Term
| Describe the thigh corset |
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Definition
| There's a hinged post on the med and lat aspects of the coff that come off the prosthesis and insert on a leather belt around the residual limb. |
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Term
| What is the usefulness of the thigh corset? |
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Definition
| Its good for people who are very overweight b/c some of the weight is absorbed around the thigh rather than the stump, and it gives more stability for those who have jobs involving heavy lifting. It's also good for those who suffer from knee med/lat instability problems. |
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Term
| What is the bulkiest of all the suspension options? |
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Definition
| Waist belt. It's not the option of choice. Only used when others don't work. |
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Term
| How much flexion is built into the socket? |
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Definition
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Term
| How much adduction is built into the socket? Why is this done? |
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Definition
| 2-3 degrees to load the medial tibial flare during WB. |
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Term
| If the foot is set too far outward, what can happen? |
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Definition
| pressure can be exerted on the distal medial stump, and the prosimal lateral stump on the fibular head, which could lead to pressure on the peroneal nerve -->pain |
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Term
| What is the purpose of setting the foot in .5" to the center of the socket? |
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Definition
| Results in a counterclockwise rotation to exert pressure on the pressure-tolerant areas (proximal medial tibi and distal lateral fibula) |
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