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NPTE: Prosthetics
| Question | Answer |
|---|---|
| Describe Syme's Disarticulation | Ankle disarticulation with attachemtn of the heel pad to the distal end of tibia for weight bearing |
| For a long below-knee amputation, how much of the tibial length is spared? | More than 50% of the length spared |
| Desired tibial length for below-knee amputation | 20-50% of length spared |
| For a long above-knee amputation, how much of femoral length is spared? | More than 60% of the length spared |
| Desired femoral length for above-knee amputation | 35-60% of length spared |
| Define Hemicorporectomy | Amputation of both lower limbs and pelvis below L4-L5 level |
| Disadvantages of Rigid Dressing | Requires careful application & close supervision during healing stages, does not allow for daily wound inspection or dressing changes |
| Advantages of a Temporary Prosthesis | Shrinks residual limb more effectively than elastic wrap, allows for early bipedal ambulation & return to function, positive motivational factor, reduces need for complex exercises |
| Advantages of Soft Dressing | Relatively inexpensive, lightweight, readily available, easily laundered |
| Socks should not exceed... | 15 ply thickness for proper fit & weight bearing of socket |
| SACH (Solid Ankle Cushioned Heel) Foot allows motion in... | Plantarflexion with small amounts of mediolateral & transverse motions |
| Describe a Patellar-tendon bearing socket | A total contact socket that allows for maximum distribution of the load and and assistance in venous blood circulation. |
| Describe a Quadrilateral Socket | Medial & posterior walls are same height, Anterior & Lateral walls are 2.5-3 inches higher, A horizontal posterior shelf to support ischial tubs & gluteals |
| List anatomic causes for Excessive Knee Flexion at Initial Contact | Flexion contracture, weak quadriceps |
| List Prosthetic Cause for Excessive Lateral Thrust at Midstance | Excessive foot inset |
| List Prosthetic Cause for Excessive Medial Thrust at Midstance | Excessive foot oustet |
| List Prostheitc Causes of Circumduction during Swing Phase in AKA | Long prosthesis, locked knee unit, loose friction, inadequate suspension, small socket, loose socket, foot plantarflexed |
| List Anatomic Causes of Lordosis during Stance | Hip flexion contracture, weak extensors |
| List Prosthetic Causes of Lateral Trunk Lean during Stance | Short prosthesis, inadequate lateral wall adduction, sharp or high medial wall |
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zimrizzle
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