Mastering Canine Shoulder Radiography

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?

Distal to the acromion (A) Signup and view all the answers

What are common mistakes when positioning the radiograph?

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

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

Trachea (A) Signup and view all the answers

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

Well visualized with no overlying tissue (C) Signup and view all the answers

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

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

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

To assist shoulder extension (B) Signup and view all the answers

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

Caudocranial view (B) Signup and view all the answers

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

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

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

Only the distal 50% of the scapula and proximal 50% of the humerus (B) 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?

At the shoulder joint (D) Signup and view all the answers

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

Using a standing position (B) Signup and view all the answers

What is the radiographic feature of a medial shoulder luxation?

Humeral head is displaced medially (D) Signup and view all the answers

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

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

What is the radiographic feature of chronic shoulder arthrosis?

Presence of osteophytes (C) Signup and view all the answers

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

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

How is the limb to be radiographed pulled into extension?

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

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

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

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

The distal 50% of the scapula and proximal 50% of the humerus. Signup and view all the answers

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

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

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

Congenital, Developmental, Traumatic, Infectious, Neoplastic, Metabolic, Degenerative Signup and view all the answers

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

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

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

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

What is the radiographic feature of chronic shoulder arthrosis?

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

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

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 Signup and view all the answers

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

To move the cervical spine and reduce superimposition over the shoulder joint Signup and view all the answers

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

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

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

The trachea Signup and view all the answers

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

Osteochondrosis, chronic shoulder arthrosis, and medial shoulder luxation Signup and view all the answers

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

The shoulder joint (just distal to the acromion) Signup and view all the answers

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

Congenital, Developmental, Traumatic, Infectious, Neoplastic, Metabolic, Degenerative Signup and view all the answers

What is the radiographic feature of medial shoulder luxation?

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

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

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

What is the radiographic feature of chronic shoulder arthrosis?

Lots of new bone (osteophytes) Signup and view all the answers

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

Difficulty in getting the shoulder close to the table Signup and view all the answers

The caudo-cranial view is most easy to obtain

dorsal recumbency Signup and view all the answers

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

sandbag Signup and view all the answers

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

good visualisation 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

standing horse Signup and view all the answers

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

neoplastic Signup and view all the answers

Mastering Canine Shoulder Radiography

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Questions and Answers

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

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

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

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

What are common mistakes when positioning the radiograph?

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

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

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

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

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

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

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

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

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

What is the radiographic feature of a medial shoulder luxation?

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

What is the radiographic feature of chronic shoulder arthrosis?

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

How is the limb to be radiographed pulled into extension?

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

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

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

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

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

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

What is the radiographic feature of chronic shoulder arthrosis?

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

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

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

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

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

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

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

What is the radiographic feature of medial shoulder luxation?

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

What is the radiographic feature of chronic shoulder arthrosis?

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

The caudo-cranial view is most easy to obtain

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

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

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

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

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