FCI
Classification of Hip and Elbow Dysplasia
by: Prof. Dr. Wilhelm Brass, President of the FCI's Scientific Commission
On June
1, 1999 the FCI's General Assembly adopted the Scientific Commission's
motion aimed at introducing an international certificate for hip and elbow
dysplasia
This
certificate is to serve as a supplement to the respective national certificates
for purposes of providing information across boarders. In order to document
any diverging national classifications in the international certificate,
they must be adapted to the FCI's classification so as to ensure that
everyone will understand them. The model of such a certificate worded
in the FCI's four official languages will be introduced in the next issue
of FCI Magazine together with recommendations for the organizational implementation
of the examinations. The classifications of hip dysplasia (HD) is based
on an FCI symposium which took place back in 1991, that of elbow dysplasia
(ED) on the recommendations of the International Elbow Working Group.
Both procedures have been recognized by the World Small Animal Veterinary
Associations.
Hips
= HD (eng/swe)
|
A=
No signs of hip dysplasia |
A=
Normala höftleder
(= tidigare UA) |
The
femoral head and the acetabulum are congruent. The craniolateral
margin has sharp outlines and rounded ends. The joint space is
narrow and even. The acetabular angle according to Norberg is
approx. 105 degrees (as a reference). In the case of excellent
hip joints, the craniolateral acetabular rim encircles the femoral
head somewhat farther then laterocaudally.
|
B=
Nearly normal hip joints |
B=
Nästan normala höftleder
(= tidigare UA)
|
The
femoral head and the acetabulum are either slightly incongruent,
and the angle to Norberg is approx. 105 degrees, or the center
of the femoral head lies in a medial position with respect tot
he dorsal margin of the acetabulum, and the femoral head and the
acetabulum are congruent.
|
C=
Light hip dysplasia
|
C=
Höftleder lindrig dysplasi
(= tidigare grad I)
|
The
femoral head and the acetabulum are incongruent, the acetabular
angle according got Norberg is about 100 degrees, and/or the craniolateral
rim of the acetabulum is slightly flattened. There may be irregularities
or no more than slight signs of osteoarthrotic alterations of
the margo acetabularis cranialis, caudalis or dorsalis or on the
femoral head or neck.
|
D=
Moderal hip dysplasia
|
D=
Höftleder måttlig dysplasi
(= tidigare grad II)
|
Obvious
incongruency between the femoral head and the acetabulum with
subluxation. Acetabular angle according to Norberg greater than
90 degrees (as a reference only). Flattening of the craniolateral
margin and/or osteoarthrotic signs.
|
E=
Severe hip dysplasia
|
E= Höftleder kraftig dysplasi
(= tidigare grad III och IV)
|
Marked
dysplastic alterations of the hip joints, such as luxation or
distinct subluxation, acetabular angle according to Norberg less
than 90 degrees, obvious flattening of the margo acetabularis
cranialis, deformation of the femoral head (mushroom-shaped, flattened),
or other signs of osteoarthrosis.
|
This
classification is based on radiologically ascertainable features only,
It was worded as unambiguously as possible.
Elbows
= ED/AD (eng/swe)
|
0=
Normal |
UA=
Utan anmärkning |
No
detectable abnormality
|
1=
Minimal arthrosis
|
lbp=
Lindrig benpålagring
|
Osteophytes,
less than 2mm wide
|
2=
Moderate arthrosis
|
mbp=
Måttlig benpålagring
|
Osteophytes,
between 2 and 5mm wide
|
3=
Severe arthrosis
|
kbp=
Kraftig benpålagring
|
Osteophytes,
wider than 5mm wide
|
Any
objection to the classification can be put forward through the nation
kennel clubs to an expert commission set up by the FCI's Scientific Commission.
FOREIGN
HIP EVALUATIONS
|