1. Pelvis at University College Dublin | Flashcards & Summaries

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Lernmaterialien für 1. Pelvis an der University College Dublin

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What makes an open book pelvis injury
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Front of pelvis separates and opens in book
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How do you do an AP Pelvis on a Trolley 

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  • Patient lies supine on the trolley, MSP perpendicular to the IR
  • If possible ASIS should be equidistant from the table top
  • Free detector in the trolley tray in landscape orientation
  • ensure the arms are raised and outside the ROI
  • Internally rotate the foot if possible to see NOF
  • Vertical central ray along the midline between the ASIS and the upper border of the pubic symphysis
  • Col to inc iliac crests superiorly, the prox thirds of the femurs inferiorly and the lateral skin margins
  • 115cm SID to counteract magnification and OID
Lösung ausblenden
TESTE DEIN WISSEN

How and Why do you do a modified lateral hip projection 

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It is done when it is either not possible to rotate the patient or to raise the unaffected leg


  • Patient is supine on the trolley
  • free detector is placed vertically in landscape position against the lateral aspect of the affected limb and is centred at the level of the femoral pulse 
  • The image receptor is tilted backwards approximately 25 degrees and is placed slightly beneath the buttock
  • It is supported using sandbags
  • the vertical central ray is directed 25 degrees mediolaterally such that it is perpendicular to the NOF centre at femoral pulse
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TESTE DEIN WISSEN

Why do we do a pelvic inlet projection 

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  • Best demonstrates ring configuration of pelvis & narrowing or widening of diameter of ring is immediately apparent.
  • This view allows the evaluation of pelvic brim integrity, AP
    displacement of the hemipelvis, internal/external rotation of the hemipelvis, and sacral impaction 
Lösung ausblenden
TESTE DEIN WISSEN

How do we do a PA Sacrum 

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TESTE DEIN WISSEN
  • Patient lies prone, MSP perpendicular to the midline of the table top, PSIS equidistant 
  • tube is angled 10-25 degrees caudally (so that it is perpendicular with the long axis of the sacrum)
  • Image detector displaced accordingly
  • Centre between the PSIS along the MSP
Lösung ausblenden
TESTE DEIN WISSEN

What is a hemiarthroplasty 

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The hemiarthroplasty replaces only the ball portion of the hip joint, not the socket portion. Commonly done after fractured hip as acetabulum is not usually fractured. 

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What is hip resurfacing 

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Where the surface of the ball is shaved off and is capped and similary the
surface of the socket is scraped off and is resurfaced with metal lining. Usually done in younger patients. Leaves the head and neck untouched. 

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TESTE DEIN WISSEN

What does DDH stand for when talking about the pelvis 

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TESTE DEIN WISSEN

Developmental Dislocation of the Hip (dysplasia) 

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TESTE DEIN WISSEN

what is the centering used for a frogs leg projection

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Midway between ASIS and Symph Pub

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TESTE DEIN WISSEN

What is the centering used for a modified lateral hip 

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TESTE DEIN WISSEN

CR 25 degrees mediolaterally so it is perpendicular to the NOF 

Lösung ausblenden
TESTE DEIN WISSEN

What is the centering for an AP Coccyx

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TESTE DEIN WISSEN

15 degree caudal angulation centered 2.5cm superior to symph 

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TESTE DEIN WISSEN

What is the centering for lateral coccyx 

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CR to palpable coccyx 

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Beispielhafte Karteikarten für deinen 1. Pelvis Kurs an der University College Dublin - von Kommilitonen auf StudySmarter erstellt!

Q:
What makes an open book pelvis injury
A:
Front of pelvis separates and opens in book
Q:

How do you do an AP Pelvis on a Trolley 

A:
  • Patient lies supine on the trolley, MSP perpendicular to the IR
  • If possible ASIS should be equidistant from the table top
  • Free detector in the trolley tray in landscape orientation
  • ensure the arms are raised and outside the ROI
  • Internally rotate the foot if possible to see NOF
  • Vertical central ray along the midline between the ASIS and the upper border of the pubic symphysis
  • Col to inc iliac crests superiorly, the prox thirds of the femurs inferiorly and the lateral skin margins
  • 115cm SID to counteract magnification and OID
Q:

How and Why do you do a modified lateral hip projection 

A:

It is done when it is either not possible to rotate the patient or to raise the unaffected leg


  • Patient is supine on the trolley
  • free detector is placed vertically in landscape position against the lateral aspect of the affected limb and is centred at the level of the femoral pulse 
  • The image receptor is tilted backwards approximately 25 degrees and is placed slightly beneath the buttock
  • It is supported using sandbags
  • the vertical central ray is directed 25 degrees mediolaterally such that it is perpendicular to the NOF centre at femoral pulse
Q:

Why do we do a pelvic inlet projection 

A:
  • Best demonstrates ring configuration of pelvis & narrowing or widening of diameter of ring is immediately apparent.
  • This view allows the evaluation of pelvic brim integrity, AP
    displacement of the hemipelvis, internal/external rotation of the hemipelvis, and sacral impaction 
Q:

How do we do a PA Sacrum 

A:
  • Patient lies prone, MSP perpendicular to the midline of the table top, PSIS equidistant 
  • tube is angled 10-25 degrees caudally (so that it is perpendicular with the long axis of the sacrum)
  • Image detector displaced accordingly
  • Centre between the PSIS along the MSP
Mehr Karteikarten anzeigen
Q:

What is a hemiarthroplasty 

A:

The hemiarthroplasty replaces only the ball portion of the hip joint, not the socket portion. Commonly done after fractured hip as acetabulum is not usually fractured. 

Q:

What is hip resurfacing 

A:

Where the surface of the ball is shaved off and is capped and similary the
surface of the socket is scraped off and is resurfaced with metal lining. Usually done in younger patients. Leaves the head and neck untouched. 

Q:

What does DDH stand for when talking about the pelvis 

A:

Developmental Dislocation of the Hip (dysplasia) 

Q:

what is the centering used for a frogs leg projection

A:

Midway between ASIS and Symph Pub

Q:

What is the centering used for a modified lateral hip 

A:

CR 25 degrees mediolaterally so it is perpendicular to the NOF 

Q:

What is the centering for an AP Coccyx

A:

15 degree caudal angulation centered 2.5cm superior to symph 

Q:

What is the centering for lateral coccyx 

A:

CR to palpable coccyx 

1. Pelvis

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