MT: Intro to NURIC Flashcards

1
Q

Desired Features vs NURIC

A
  • proper contours for functioning muscles - RF and Gluteal Channel
  • stabilizing - ischial containment/shelf
  • distribute pressures - support gluteal muscles
  • precise contouring - not forcing limb into quad shape
  • total contact - prevent distal end edema
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2
Q

Biomechanical Objectives: Coronal Plane

A
  • provide ML stability of the pelvis during midstance on prosthetic side
  • conserve energy by minimizing lateral displacement of CoG
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3
Q

Early Ischial Containment

*

A
  • recognized need for narrow ML
  • to allow coronal plane stability
  • align head of femur and distal aspect of the femur
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4
Q

TF Specific considerations

A
  • evaluate & accommodate ROM in hip extension and permit normal stride on contralateral side
  • flexor and extensor muscles accommodated inside socket
  • adductor shape can vary with design
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5
Q

Critical Design Features

A
  • axial support
  • compartments of NURIC socket
  • amount/degree of containment
  • alignment
  • objective measurements
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6
Q

Axial Support

A
  • ischial support (direct skeletal support)
  • gluteal support
  • hydrostatic support
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7
Q

Ischial Support

A
  • critical for patients with minimal muscle tone
  • inadequate support may result in ramus pressure and reduced comfort
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8
Q

Gluteal Support

A
  • achieved by appropriate socket contours (proper shelf height)
  • critical for short residual limbs
  • aids in general loading and comfort
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9
Q

Hydrostatic Support

A
  • achieved by volume reduction (tension values)
  • volume reduction to compress tissues
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10
Q

Compartments of NURIC Socket

A
  • anterior
  • medial
  • lateral
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11
Q

Anterior Compartment

A
  • adductor longus relief
  • femoral (scarpa) traingle compression
  • rectus femoris relief
  • tensor fascia lata/ASIS relief
  • opposing ischial support
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12
Q

What are the boundaries of scarpa’s triangle

A
  • inguinal ligament
  • sartorius
  • adductor longus
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13
Q

What does the contour of the rectus area provide?

A

counter force to stabilize ischium in proper location

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14
Q

Rectus Channel Goals

A
  • provides equal distribution of pressure between firm and soft tissues
  • control rotation
  • allow room for functioning muscles
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15
Q

Medial Compartment

A
  • medial wall internal rotation relative to LOP
  • Sub-ischial triangle
  • medial brim flaring
  • ramus relief
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16
Q

Internal Rotation of Medial Wall

A
  • pre-compress adductors
  • facilitate early stance phase loading
  • prevents lateral shifting of socket
17
Q

Sub Iscial Triangle Boarders

A
  • inferior pubic ramus
  • semitendinosis
  • Gracilis
18
Q

Medial Brim Flaring

A
  • prevent adductor roll
  • protects distal aspect of ramus from excessive pressue
  • no vertical component at all
19
Q

Adductor Roll Caused by

A
  • tight scoket
  • inadequate flaring of prox/medial brim
  • too low medial wall
  • patient not getting into socket !!!!!
20
Q

Lateral Compartment

A
  • Stabilization of femur
  • relief for lateral distal femur
  • proximal lateral cupping
  • externally rotated
21
Q

Lateral Wall Contours

A
  • proximal lateral cupping reduces gapping during mid-stance
  • lateral wall stabilized femur
22
Q

Amount of Ischial Containment

A
  • greater containment distributes forces over a larger area
  • contributes to coronal plane stability
  • does not produce “skeletal lock”
23
Q

Socket Flexion

A
  • Allows for even step length on sound side
  • puts extensors on stretch and at functional advantage
24
Q

Socket ADduction

A
  • allows loading of lateral femur
  • puts hip Abductors on stretch and at functional advantage
  • places femur in anatomical alignment
25
Q

Goals of Medial AP measurement

A
  • ischial support
  • medial containment
  • locate ischium in impression
26
Q

Goals of Lateral AP measurement

A
  • gluteal loading
  • prevent anterior gapping while seated
  • allow sufficient room for adductor musculature
27
Q

Subischial Triangle

A
  • provides loading distal to the ischial containment
  • decreases load on ischium
  • compresses adductors to aid in their functinoing
  • parallel to ischium