54. Radius And Ulna at Veterinärmedizinische Universität Wien | Flashcards & Summaries

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Lernmaterialien für 54. Radius and Ulna an der Veterinärmedizinische Universität Wien

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What is more frequent?

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Asymmetrical physeal damage  

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What are the significant prognostic indicators for functional outcome?

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Severity of pre-existing elbow joint osteoarthritis and more severe functional impairments

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What is the alternative to avoid instability and recurvatum of ostectomized ulna ?

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TESTE DEIN WISSEN

ostectomy of distal part of ulnar diaphysis or removal of distal physis itself

Lösung ausblenden
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What is the risk of performing any correction in skeletally immature dog ? What is the alternative and the risk of this alternative?

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- angulation return and additional surgery needed

- Alternative: delay surgery until animal is mature and then do a definitive correction with no risk of reangulation

- BUT: risk of waiting => angulation will negatively affect the distribution of biomechanical loads placed on the joints => Creating stress on the joint => irregular wear of articular surfaces => early osteoarthritis + potential remodeling of subchondral bone

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In case of biapical defomity what does typically the ulna require?

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releasing osteotomy at level of each radial osteotomy 

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Is an external coaptation recommended post internal fixation and if yes what and how long?

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eventuel a rigid caudal splint or bivalved cast for 4 to 6 weeks

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What is the currently used fixation technique for controlled dynamic ulnar ostectomy?

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Circular external skeletal fixators

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Why is an ostectomy prefered by juvenile patients and an osteotomy prefered by adult patients?

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TESTE DEIN WISSEN

Ostectomy:

Larger gap help prevent ulna from completing osseous union before cessation of radial growth 


In skeletally mature dogs => osteotomy performed because premature union is much less of a concern

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TESTE DEIN WISSEN

What are the treatment possibilities for congenital radial head luxation (4)?

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  1. Conservative management
  2. Open surgical reduction and fixation
  3. Radial head ostectomy 
  4. Elbow arthrodesis
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From what can arise development antebrachial angulation?

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  1. asymmetric premature closure of proximal or distal physis of radius or both
  2. premature closure of distal physis of ulna with continued radial development
  3. combination of the 2
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TESTE DEIN WISSEN

What could be the consequence if there is an instability at ostectomy site?

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TESTE DEIN WISSEN

formation of exuberant callus 


- potential to form a bridging synostosis with radius 

- can be source of irritation because thin soft tissue coverage overlying caudal aspect of ulna

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TESTE DEIN WISSEN

Which plate can be used in a distal metaphysis Fx of radius? What is the approach?

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TESTE DEIN WISSEN

T-plate if sufficient bone available for placement of the 2 or 3 most distal screws


combination of medial and dorsal approaches of the distal radius 

Lösung ausblenden
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Q:

What is more frequent?

A:

Asymmetrical physeal damage  

Q:

What are the significant prognostic indicators for functional outcome?

A:

Severity of pre-existing elbow joint osteoarthritis and more severe functional impairments

Q:

What is the alternative to avoid instability and recurvatum of ostectomized ulna ?

A:

ostectomy of distal part of ulnar diaphysis or removal of distal physis itself

Q:

What is the risk of performing any correction in skeletally immature dog ? What is the alternative and the risk of this alternative?

A:

- angulation return and additional surgery needed

- Alternative: delay surgery until animal is mature and then do a definitive correction with no risk of reangulation

- BUT: risk of waiting => angulation will negatively affect the distribution of biomechanical loads placed on the joints => Creating stress on the joint => irregular wear of articular surfaces => early osteoarthritis + potential remodeling of subchondral bone

Q:

In case of biapical defomity what does typically the ulna require?

A:

releasing osteotomy at level of each radial osteotomy 

Mehr Karteikarten anzeigen
Q:

Is an external coaptation recommended post internal fixation and if yes what and how long?

A:

eventuel a rigid caudal splint or bivalved cast for 4 to 6 weeks

Q:

What is the currently used fixation technique for controlled dynamic ulnar ostectomy?

A:

Circular external skeletal fixators

Q:

Why is an ostectomy prefered by juvenile patients and an osteotomy prefered by adult patients?

A:

Ostectomy:

Larger gap help prevent ulna from completing osseous union before cessation of radial growth 


In skeletally mature dogs => osteotomy performed because premature union is much less of a concern

Q:

What are the treatment possibilities for congenital radial head luxation (4)?

A:
  1. Conservative management
  2. Open surgical reduction and fixation
  3. Radial head ostectomy 
  4. Elbow arthrodesis
Q:

From what can arise development antebrachial angulation?

A:
  1. asymmetric premature closure of proximal or distal physis of radius or both
  2. premature closure of distal physis of ulna with continued radial development
  3. combination of the 2
Q:

What could be the consequence if there is an instability at ostectomy site?

A:

formation of exuberant callus 


- potential to form a bridging synostosis with radius 

- can be source of irritation because thin soft tissue coverage overlying caudal aspect of ulna

Q:

Which plate can be used in a distal metaphysis Fx of radius? What is the approach?

A:

T-plate if sufficient bone available for placement of the 2 or 3 most distal screws


combination of medial and dorsal approaches of the distal radius 

54. Radius and Ulna

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