Instructions for Taking Images for OFA Dysplasia Evaluations
Images should be permanently identified with:
- Registered name and/or number
- Name of veterinary clinic making the film
- Date the image was taken
The dysplasia control database of the OFA is a voluntary program established to evaluate images and to identify films showing no evidence of dysplasia or other orthopedic problems. All images submitted that are of acceptable diagnostic quality will be reviewed by qualified veterinary radiologists and a consensus report will be returned to the owner of record and referring veterinarian. Only animals that are 24 months of age or older to the day at the time of radiography, with no radiographic evidence of dysplasia, will be assigned a breed OFA number. The OFA does offer a preliminary evaluation for those under 24 months of age.
Only dogs that are 24 months of age, to the day, or older at the time of radiography can qualify for an OFA hip number. In general hip joint status of younger dogs will be evaluated but only a consultation report will be issued. For toy and small breeds interested in the Legg-Calve-Perthes Database the animal has to be 12 months of age or older. The dog's registration certificate or copy of this information should be available at the time of radiography.
OFA Policy Regarding Release of Preliminary Results (Animals Under 24 Months)
The OFA will post preliminary results if:
- The animal is at least 12 months at the time of radiography
- The Animal must be permanently identified via microchip or tattoo.
- The owner initials the authorization block to release all results (including abnormal results) when the application is initially submitted
Obtaining proper position often requires chemical restraint. The OFA recommends chemical restraint to the point of muscular relaxation. The type of agent used (sedative, tranquilizer, or general anesthesia) is best determined by the attending veterinarian.
Dorsal recumbency with the rear legs extended and parallel to each other is the preferred positioning. This standard ventrodorsal view is the basis for evaluation of hip joint status with respect to hip dysplasia. Care should be exercised to be sure the pelvis is not tilted. Elbow joints are evaluated in the fully flexed medial to lateral position, additional views are optional.