Image Submission

This page covers the requirements for submitting an x-ray image for CHEDS.

Radiographic Technique


  • A single extended VD view of the pelvis is required for scoring, taken under general anaesthetic or heavy sedation, to enable correct positioning.
  • The dog is positioned in dorsal recumbency and the hind limbs extended caudally
  • The image should include the wings of the ilia cranially, and if possible, include the stifles (if the size of the dog allows). Priority should be given to including the wings of the ilia rather than the stifles if the dog is too large.
  • The x-ray beam is centred over the hips, this can be achieved by palpating bony landmarks such as the cranial edge of the pubic symphysis, and the greater trochanters.
  • The femurs are held parallel by rotating the limbs medially, so that the patellas are superimposed over the distal femurs, and adducting the limbs.
  • It is important that there is no tilting or rotation of the pelvis, as this can make one hip look beter and the other look worse than it actually is, affecting the scoring. This can be assessed by checking the wings of the ilia, which should look identical; if there is tilting, one iliac wing will look wider than the other, the wider one being tilted down. Also, the obturator foramina should look identical. A well-positioned pelvis looks symmetrical.


  • A single, fully flexed, medial to lateral view of each elbow is required, labelled L and R. This allows clear visualisation of the anconeal process, to check for any evidence of osteophyte formation.
  • With the dog in lateral recumbency, the elbow to be radiographed is pulled away from the body, to prevent superimposition of the sternum, and then completely flexed. The chest is rolled away from the elbow, and the upper forelimb is pulled caudally.
  • The x-ray beam is centred on the elbow joint, this can be achieved by palpating the humeral condyles and using them as landmarks for centring the beam.