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Official HD, ED, OCD screening
Official HD, ED, OCD screening
As part of the breeding examinations for the German Longhaired Pointer (Deutsch Langhaar), we take and evaluate official HD (Hip Dysplasia), ED (Elbow Dysplasia), and OCD (Osteochondrosis Dissecans) X-rays. We also evaluate images taken elsewhere, provided they comply with the official guidelines. In the following text, you will find detailed information regarding the registration form, radiographic techniques, and explanatory images.
Instructions for Official X-ray Examinations
The minimum age for official X-ray diagnostics (HD, ED, OCD) for the German Longhaired Pointer breed is 12 months.
1. Labeling:
- The identity of the dog in question must be clearly traceable from the X-ray images.
- A completely (!) filled-out form from the Austrian German Longhaired Pointer Club must be submitted along with the X-ray images.
- X-rays with insufficient, incorrect, provisional, or erasable identification, as well as incompletely filled-out forms, will not be evaluated.
- All X-ray images must be submitted in DICOM format. JPEG or other image formats cannot be evaluated.
- X-rays with overlays/artifacts from dirt, collars/harnesses, or without side markers will not be accepted.
3. Positioning technique:
Guidelines for ED (Elbow Dysplasia) X-rays
1. Mediolateral view (Fig. 1)
Elbow slightly flexed / opening angle between 45° and 90°.
The anconeal process must be clearly visible, and its outline must be traceable. To avoid excessive pronation or supination of the forearm, it is recommended to flex the carpal joint during positioning, keeping it parallel to the table surface.
2. Craniocaudal view (Fig. 2)
To display the medial coronoid process, the elbow joint should be well extended in the craniocaudal projection and slightly rotated inward (approx. 15° pronation).
The lateral cortex of the distal humerus should be projected over the proximo-lateral margin of the olecranon. Each elbow joint must be X-rayed separately (!).
Guidelines for OCD (Shoulder) X-rays
1. Mediolateral view (Fig. 3)
The shoulder joint must be extended and imaged without any overlapping of the joint surface by the trachea, sternum, or other bones.
Richtlinien HD (Hüfte) Röntgenaufnahme
1. The image must be taken under sedation.
2. The entire pelvis, including the knee joints, must be imaged.
(Fig. 4)
3. The pelvis must be imaged symmetrically. Pay attention to the obturator foramina and the iliac wings. The pelvis must not be tilted along the short axis. (No “cat eyes” appearance of the obturator foramina!)
4. The femurs must be positioned parallel to each other and to the table. Both patellae should be centered within the femoral trochlea and aligned at the level of the fabellae.
5. The image quality must be sufficient to clearly identify the dorsal acetabular rim.
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