Test 2: 28: hip Flashcards
hip dylsplasia is a developmental coxofemoral —- and
— → arthritis and eventually
degenerative joint disease
laxity
incongruity
what are some causes of hip dysplasia
hip pain is biphasic meaning
presents in young animals for soft tissue strecthing and laxity
then presents again later in life for OA and DJD
clinical signs of puppy with hip issues
unwillingness to play
frequent sitting
biting at hips
swaying hips
bunny hop
hip hike
ortolani sign
click/clunk of hip
barlow sign
1st part of ortanli
palpable dorsal subluxation of femur relative to pelvis
barden’s test
Palpable lateral subluxation of femoral head from acetabulum
Positive test indicates hip
laxity
xrays of hips will show
blunting or misshaped femoral head
acetabulum shallow
soft tissue loss
evidence of early hip OA on an xray
Circumferential femoral head osteophyte (CFHO)
Caudolateral curvilinear osteophyte (CCO)
* “Morgan’s line”
< 50% femoral head coverage
evidence of chronic hip OA
- Shallow acetabula
- Thickened femoral neck
- Acetabular subchondral sclerosis
- Nonspecific osteophytosis
how to do pennhip xrays
16 weeks old
certified
special team to read films
pt sedated
can use as screen in pups 8-12 weeks old
two views for pennhip
compression and distraction view
how does JPS work
Juvenile Pubic Symphysiodesis
GOAL: increase acetabular coverage of femoral head
Partial surgical closure of pubic symphysis
close part of growth plate so acetabular grows but rest of pelvis stops
6-18 weeks old puppy
DPO
Double Pelvic Osteotomy
cut pelvis and twist it to increase acetabular covreage of femoral head
pt < 2 years old
complications of total hip replacement
hip luxation
fracture
loosening
implant failure
infection
legg calve perthes disease
Avascular necrosis of the femoral head
Non-inflammatory localized ischemia
Secondary remodeling
* Deformation of the femoral head and neck
* Lameness
legg calves perthes presents in
toy breeds
4-11 months of age
clinical signs of legg calves perthes
Progressive hind limb lameness
* Variable severity
Muscle atrophy
Hip manipulation elicits pain
* Crepitus
Bilateral in 12-17%
xrays of legg calve perthes
Increased opacity of lateral epiphyseal region
Focal bone lysis of femoral head
“Moth eaten” ”Apple-core”
- Flattening of femoral head
- Collapse and thickening of femoral neck
- Coxofemoral degenerative joint disease
treatment of legg calve perth
surgical
total hip replacement
femoral head and neck ostectomy (FHO)
what to do for capital physeal fracture
occurs through open growth plate
poor blood supply to physeal fracture
recommend surgical repair
two causes of captial physeal fractures
acute trauma (Hit by car)
slipped capital physis or capital physeal dysplasia → male fat neutered cat will have delayed capital physis closure at 1-3 years old instead of normal 8-10 months
— hip luxation is the most common and is usually caused by —
craniodorsal
trauma
clinical signs of craniodorsal hip luxation
adduction and external rotation
greater trochanter palpation (a line instead of a triangle)
limb may be shorter
