|
* any dog that shows signs of having shallow acetabula or acetabular
rim/edge change or osteoarthritis/degenerative joint disease (DJD)
does NOT qualify for an SP rating. Only dogs that have failed OFA due
to subluxation, yet show a strong LMX potential can be submitted for
consideration.
We
hope that the chart shown on this page will provide you with a better
understanding regarding universally accepted hip rating systems as compared
with our ISSR system.
At this time we have two methods of hip
evaluation/certification available in the US: OFA and PennHip.
OFA
As compared to OFA ratings the ISSR follows the following guidelines:
OFA ratings are accepted as presented on the official OFA report, with the
exception of our SP* rating that is equal to the German FAST
NORMAL and OFA "borderline."
| OFA
Rating |
ISSR Rating |
|
Excellent |
Excellent |
|
Good |
Good |
|
Fair |
Fair |
| Borderline
|
May
apply for SP* |
Penn Hip
The
PennHip system does not provide an actual rating,
although each dog is evaluated against a
breed specific
laxity
profile.
(The breed's laxity profile and median percentile change as more dogs of
that specific breed are evaluated by the Penn Hip method.)
The
ISSR documents the actual scores received for each hip.
Those values are listed on the dog's permanent certificate. The average of
the DI (distraction index) value for both hips is calculated
for entry in the LMX (littermate x-ray) database. To correlate
the data with that of the OFA, the following conversions are followed:
|
Average DI |
ISSR Rating |
| 0.29 or less with no
DJD |
Excellent |
| 0.39 or less
with no DJD |
Good |
| 0.49 or less with no
DJD |
Fair |
| 0.55 or less with no
DJD |
may apply for SP |
|