Test 2: 28: hip Flashcards

1
Q

hip dylsplasia is a developmental coxofemoral —- and
— → arthritis and eventually
degenerative joint disease

A

laxity
incongruity

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2
Q

what are some causes of hip dysplasia

A
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3
Q

hip pain is biphasic meaning

A

presents in young animals for soft tissue strecthing and laxity

then presents again later in life for OA and DJD

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4
Q

clinical signs of puppy with hip issues

A

unwillingness to play
frequent sitting
biting at hips
swaying hips
bunny hop
hip hike

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5
Q

ortolani sign

A

click/clunk of hip

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6
Q

barlow sign

A

1st part of ortanli

palpable dorsal subluxation of femur relative to pelvis

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7
Q

barden’s test

A

Palpable lateral subluxation of femoral head from acetabulum

Positive test indicates hip
laxity

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8
Q

xrays of hips will show

A

blunting or misshaped femoral head
acetabulum shallow
soft tissue loss

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9
Q

evidence of early hip OA on an xray

A

Circumferential femoral head osteophyte (CFHO)

Caudolateral curvilinear osteophyte (CCO)
* “Morgan’s line”

< 50% femoral head coverage

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10
Q

evidence of chronic hip OA

A
  • Shallow acetabula
  • Thickened femoral neck
  • Acetabular subchondral sclerosis
  • Nonspecific osteophytosis
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11
Q

how to do pennhip xrays

A

16 weeks old
certified
special team to read films
pt sedated

can use as screen in pups 8-12 weeks old

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12
Q

two views for pennhip

A

compression and distraction view

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13
Q

how does JPS work

A

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

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14
Q

DPO

A

Double Pelvic Osteotomy

cut pelvis and twist it to increase acetabular covreage of femoral head

pt < 2 years old

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15
Q

complications of total hip replacement

A

hip luxation
fracture
loosening
implant failure
infection

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16
Q

legg calve perthes disease

A

Avascular necrosis of the femoral head

Non-inflammatory localized ischemia

Secondary remodeling
* Deformation of the femoral head and neck
* Lameness

17
Q

legg calves perthes presents in

A

toy breeds
4-11 months of age

18
Q

clinical signs of legg calves perthes

A

Progressive hind limb lameness
* Variable severity
Muscle atrophy
Hip manipulation elicits pain
* Crepitus
Bilateral in 12-17%

19
Q

xrays of legg calve perthes

A

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
20
Q

treatment of legg calve perth

A

surgical

total hip replacement

femoral head and neck ostectomy (FHO)

21
Q

what to do for capital physeal fracture

A

occurs through open growth plate

poor blood supply to physeal fracture

recommend surgical repair

22
Q

two causes of captial physeal fractures

A

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

23
Q

— hip luxation is the most common and is usually caused by —

A

craniodorsal

trauma

24
Q

clinical signs of craniodorsal hip luxation

A

adduction and external rotation

greater trochanter palpation (a line instead of a triangle)

limb may be shorter

25
Q

how to treat hip luxation

A
26
Q

when can you use close reduction for hip luxation

A

acute < 5 days
normal neurologic function
stable post reduction

no concurrent orthopedic injury
no reluxation
no fractures
no hip dysplasia/DJD

27
Q

what kind of sling for craniodorsal luxation

A

ehmer sling
adds abduction and internal rotation

50% success rate and sof tissue injury common

28
Q

what kind of sling for ventral luxation

A

hobbles
>80% success rate