Radiology Packet 21
Pelvis
5 yr old F Russian Blue
“Jessie”
• HX = Chronic
intermittent
lameness of the
right hind leg
progressing to
temporary loss of
use of both hind
legs one day prior
to presentation
5 yr old F Russian Blue
“Jessie”
• RF
– The acetabulae are shallow.
– Minor osteophyte production is present at the dorsocranial margin of the
acetabulum bilaterally.
– The femoral necks are slightly thick and the femoral heads are flattened.
• RD
– Bilateral hip dyplasia with secondary DJD
10 mo female Silky Terrier
• HX = One month lameness of left hind leg, also hip pain
is palpable
10 mo female Silky Terrier
•
RF
– The left femoral head is markedly misshapen and the femoral neck is thickened
considerably.
– The subchondral bone of the acetabulum is sclerotic and thickened and the joint
space is wider than the right side.
•
RD
– Avascular necrosis of the femoral head (Legg-Calves-Perthes disease)
•
Next
– Surgery
2 yr old MC DSH
“Lambert”
• HX = presented for evaluation of abnormal gait of the
hind limbs
2 yr old MC DSH
“Lambert”
•
RF
– There is a fracture of the left femoral neck at the level of the physis (capital
physeal fracture).
– There is a roughened and indistinct appearance to the femoral neck at the level
of the fracture.
– A linear lucency at the level of the physis and extending laterally into the femoral
neck on the right can be seen on careful evaluation.
•
RD
– Fracture of the left capital femoral physis
– Suspected fracture of the right femoral physis
•
Next
– Reduction and surgical stabilization of the capital physeal fracture.
1 yr old Mix breed dog
“Bo”
• HX = Audible
clicking in hips
when playing with
other dogs,
palpable laxity
and pain on
manipulation of
both coxofemoral
joints, mild to
moderate
crepitation of both
coxofemoral joints
1 yr old Mix breed dog
“Bo”
•
•
RF
– There is severe bilateral coxofemoral subluxation.
– Both femoral necks are thickened and there is a roughened appearance
to the femoral neck dorsally.
– A subtle linear line is seen extending form proximal to distal at the
lateral aspect of the femoral neck, this is called “Morgan’s line” and is
often the earliest radiographic change seen in dogs with hip dysplasia.
RD
– Severe bilateral hip dysplasia with mild secondary osteoarthritis
6 yr old FS Lab Retriever
“Foxy”
• HX = “Foxy”
has been lame
on the LH for
approximately
6 weeks and
there is
palpable laxity
in the left stifle
6 yr old FS Lab Retriever
“Foxy”
•
•
RF
– Markedly decreased coverage of the right femoral head by the
acetabulum.
– Severe osteoarthritis is present in the joint.
RD
– Bilateral hip dysplasia with secondary DJD
9 mo old F Lab Retriever
“Emie”
• HX = Trauma
approximately 2 months
ago at which time a
fracture of the pelvis
was diagnosed, the dog
has been lame since
that time and left hip
luxation was recently
diagnosed. Owners
want to know if this is
congenital or due to the
trauma as they had
planned to breed “Emie”
9 mo old F Lab Retriever
“Emie”
•
•
RF
– There is luxation of the left coxofemoral joint.
– The acetabulum is shallow and there is remodeling of the cranial
acetabular margin.
– The left femoral head is flattened and the femoral neck is thickened.
– Osteophyte formation is present at the margin of the articular cartilage
of the femoral head.
– There is mal-alignment at the caudal margin of the right sacroiliac joint
which is the right pelvic fracture that was described in the history.
RD
– Hid dysplasia
8 mo old F Himalayan
“Tucker”
• HX = appears to be a defect in the lumbar and caudal
spine
8 mo old F Himalayan
“Tucker”
•
RF
–
–
–
–
•
Severe bilateral coxofemoral subluxation.
The acetabular cups are very shallow.
The femoral necks appear short and more vertically oriented than normal.
Both femoral necks are slightly thickened.
RD
– Severe bilateral hip dysplasia