Mastering Canine Shoulder Radiography
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Questions and Answers

In which position is the dog placed for the caudo-cranial view?

  • Ventral recumbency
  • Prone position
  • Dorsal recumbency (correct)
  • Lateral recumbency
  • What is the purpose of securing the neck using a sandbag?

  • To reduce superimposition of the neck soft tissues over the shoulder joint (correct)
  • To increase contrast in the radiograph
  • To assist shoulder extension
  • To move the cervical spine away from the shoulder joint
  • What should be included in the exposed area of the radiograph?

  • Distal 50% of the scapula and distal 50% of the humerus
  • Proximal 50% of the scapula and distal 50% of the humerus
  • Distal 50% of the scapula and proximal 50% of the humerus (correct)
  • Proximal 50% of the scapula and proximal 50% of the humerus
  • What should the centre of collimation be in a well-positioned shoulder radiograph?

    <p>Distal to the acromion (A)</p> Signup and view all the answers

    What are common mistakes when positioning the radiograph?

    <p>Overlying tissue of the neck, trachea, and cervical spine (B)</p> Signup and view all the answers

    What do some radiographers deliberately try to overlie the shoulder joint with?

    <p>Trachea (A)</p> Signup and view all the answers

    What should the joint space look like in a well-positioned radiograph?

    <p>Well visualized with no overlying tissue (C)</p> Signup and view all the answers

    What is the purpose of placing a foam pad under the chest?

    <p>To ensure the dog is parallel to the table (C)</p> Signup and view all the answers

    What is the purpose of moving the upper limb caudally with a rope tie?

    <p>To assist shoulder extension (B)</p> Signup and view all the answers

    Which view is most easy to obtain in radiographing a dog's limb?

    <p>Caudocranial view (B)</p> Signup and view all the answers

    What is the recommended positioning for obtaining a caudo-cranial view of a dog's limb?

    <p>Dorsal recumbency with the limb extended and pulled away from the midline (D)</p> Signup and view all the answers

    What should be included in the collimation for a caudo-cranial view of a dog's shoulder?

    <p>Only the distal 50% of the scapula and proximal 50% of the humerus (B)</p> Signup and view all the answers

    What is the recommended centring for a well-positioned radiograph of a dog's limb in the caudo-cranial view?

    <p>At the shoulder joint (D)</p> Signup and view all the answers

    What can result in magnification distortion in the cranio-caudal view of a dog's shoulder?

    <p>Using a standing position (B)</p> Signup and view all the answers

    What is the radiographic feature of a medial shoulder luxation?

    <p>Humeral head is displaced medially (D)</p> Signup and view all the answers

    What is the radiographic feature of osteochondrosis in a dog's shoulder?

    <p>Loss of rounded contour of the caudal surface of the humeral head (B)</p> Signup and view all the answers

    What is the radiographic feature of chronic shoulder arthrosis?

    <p>Presence of osteophytes (C)</p> Signup and view all the answers

    What is the purpose of anaesthetizing the dog for the caudo-cranial view of the shoulder?

    <p>The dog needs to be immobilized to obtain a clear and accurate radiograph without movement or discomfort.</p> Signup and view all the answers

    How is the limb to be radiographed pulled into extension?

    <p>A rope tie is used to pull the limb into extension.</p> Signup and view all the answers

    What is the purpose of flexing the neck dorsally and securing it with a sandbag?

    <p>It moves the cervical spine so that it does not superimpose over the shoulder joint, reducing superimposition on the radiograph.</p> Signup and view all the answers

    What should be included in the exposed area of the radiograph?

    <p>The distal 50% of the scapula and proximal 50% of the humerus.</p> Signup and view all the answers

    What is the recommended positioning of the dog for the caudo-cranial view of the shoulder?

    <p>The dog should be in dorsal recumbency with the limb extended cranially.</p> Signup and view all the answers

    What are the different categories of skeletal disease that can be considered when evaluating shoulder radiographs?

    <p>Congenital, Developmental, Traumatic, Infectious, Neoplastic, Metabolic, Degenerative</p> Signup and view all the answers

    What is the radiographic feature of medial shoulder luxation and what is it associated with?

    <p>The humeral head is displaced medially with regard to the scapula. It is associated with traumatic luxation.</p> Signup and view all the answers

    What is the radiographic feature of osteochondrosis in a dog's shoulder?

    <p>Loss of rounded contour of caudal surface of humeral head and radiolucent defect</p> Signup and view all the answers

    What is the radiographic feature of chronic shoulder arthrosis?

    <p>Lots of new bone (osteophytes) with an underlying cause often not evident</p> Signup and view all the answers

    What is the purpose of a caudo-cranial view in radiographing a dog's limb?

    <p>To obtain a view where the long axis of the scapula and humerus are in line with each other and to visualize the joint space</p> Signup and view all the answers

    What is the purpose of securing the neck using a sandbag?

    <p>To move the cervical spine and reduce superimposition over the shoulder joint</p> Signup and view all the answers

    What is the purpose of placing a foam pad under the chest?

    <p>To ensure the dog is parallel to the table and assist shoulder extension</p> Signup and view all the answers

    What do some radiographers deliberately try to overlie the shoulder joint with?

    <p>The trachea</p> Signup and view all the answers

    What are the different categories of skeletal disease that can be considered when evaluating shoulder radiographs?

    <p>Osteochondrosis, chronic shoulder arthrosis, and medial shoulder luxation</p> Signup and view all the answers

    What should the centre of collimation be in a well-positioned shoulder radiograph?

    <p>The shoulder joint (just distal to the acromion)</p> Signup and view all the answers

    What are the possible categories of skeletal disease when evaluating shoulder radiographs?

    <p>Congenital, Developmental, Traumatic, Infectious, Neoplastic, Metabolic, Degenerative</p> Signup and view all the answers

    What is the radiographic feature of medial shoulder luxation?

    <p>The humeral head is luxated compared to the glenoid cavity.</p> Signup and view all the answers

    What is the radiographic feature of osteochondrosis in a dog's shoulder?

    <p>Loss of rounded contour of caudal surface of humeral head, radiolucent defect</p> Signup and view all the answers

    What is the radiographic feature of chronic shoulder arthrosis?

    <p>Lots of new bone (osteophytes)</p> Signup and view all the answers

    What can result in magnification distortion in the cranio-caudal view of a dog's shoulder?

    <p>Difficulty in getting the shoulder close to the table</p> Signup and view all the answers

    The caudo-cranial view is most easy to obtain

    <p>dorsal recumbency</p> Signup and view all the answers

    The limb is pulled slightly away from the midline (approx. 5 degrees)

    <p>sandbag</p> Signup and view all the answers

    A well positioned radiograph has the scapula and humerus in line with each other

    <p>good visualisation</p> Signup and view all the answers

    The cranio-caudal view can result in magnification distortion as it is difficult to get the shoulder close to the table

    <p>standing horse</p> Signup and view all the answers

    For simple categorisation its worth thinking of skeletal disease as possibly being one of the following

    <p>neoplastic</p> Signup and view all the answers

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