Equine Stifle and Tarsus Flashcards by D. M. | Brainscape

Q

What are the 3 routine radiographs for the stifle?

A

Lateromedial
Caudocranial
Caudo45lateral-craniomedial oblique

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Q

What view?

A

Caudo45lateral-craniomedial oblique

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Q

Identify the indicated structures

A

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Q

What view?

A

Cranioproximal-craniodistal oblique
“Skyline patella”

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Q

What view?

A

Flexed lateral oblique

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Q

Identify the indicated structures

A

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Q

Identify the indicated signs of the given disease process

A

Osteoarthritis

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Q

A

Osteoarthritis
Yellow = osteophytes
Fibula is laterral

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Q

A

Stifle osteochondrosis

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Q

A

Stifle osteochondrosis

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Q

A

Stifle osteochondrosis
Flattening of the medial femoral condyle - but a very subtle ‘double line’ indicating a concave defect

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Q

A

Osseous cyst-like lesion of the medial femoral condyle
Common

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Q

What are the 2 manifestations of osteochondrosis in the stifle joint?

A

Osteochondrosis of the femoral trochlear ridge
Osseous cyst-like lesions of the medial femoral condyle

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Q

A

Osseous cyst-like lesion of the lateral femoral condyle
Uncommon

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Q

A

Patellar fragmentation
Bordered by sclerosis

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Q

A

Patellar fragmentation + lateral trochlear OC lesion

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Q

If you had to chose 1 view to screen for the most common OC lesions of the stifle, what would it be?

A

Caudolateral-craniomedial oblique

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Q

A

Normal foal stifle
Irregular trochlear ridges, tibial apophysis and patella can also be irregular

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Q

A

Septic foal stifle

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Q

A

Tibial stress fracture

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Q

A

Tibial stress fracture

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Q

A

Tibial eminence fracture
Likely traumatic

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Q

A

Tibial eminence fracture
Likely traumatic

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Q

A

Tibial tuberosity fracture

Q

A

Chronic changes from prior trauma and meniscal injury
Rounded margins and osteoproliferation

Q

What are the routine projections for the tarsus?

A

Lateral
DP
DMPLO
DLPMO

Q

What surfaces are we highlighting with a DLPMO projection?

A

Q

What surfaces are we highlighting with a DMPLO projection?

A

Q

What view?

A

Flexed skyline

Q

A

Osteoarthrosis
Earliest sign = osteophyte formation (green)

Q

A

Degenerative change
Medullary and subchondral bone sclerosis

Q

A

Degenerative change
Subchondral bone lysis/erosive changes/resorption

Q

A

Degenerative change
Periarticular osteophytes

Q

A

Advanced osteoarthrosis of the tarsus
Eventually = ankylosis

Q

A

Advanced osteoarthrosis of the tarsus
Eventually = ankylosis

Q

A

Advanced osteoarthrosis of the tarsus

Q

A

Advanced osteoarthrosis of the tarsus

Q

A

Advanced osteoarthrosis of the tarsus

Q

A

Abnormal origin of the suspensory ligament

Q

A

Septic arthritis with marked intracapsular swelling (yellow)

Q

A

Incomplete ossification of the cuboidal bones

Q

What are the common sites of osteochondrosis of the tarsus?

A

Distal intermediate ridge of the tibia
Lateral trochlear ridge of the talus
Medial malleolus&raquo_space; lateral malleolus
Medial trochlear ridge of the talus

Q

A

OCD of the distal intermediate ridge of the tibia

Q

A

OCD of the distal intermediate ridge of the tibia

Q

A

OCD of the distal intermediate ridge of the tibia (most common site)

Q

A

OCD of the lateral trochlear ridge distal tip (second most common site)

Q

If you had to choose 1 view to screen for the most common OC lesion/s of the tarsus, what would it be?

A

DMPLO

Q

A

OCD of the medial malleolus

Q

A

OCD of the medial malleolus

Q

What projection is needed to detect OCD of the medial malleolus?

A

Dorso10lateral-plantaromedial oblique

Q

A

Normal medial malleolus

Q

A

Abnormal medial malleolus

Q

A

Slab fracture of the tarsus

Q

A

Infection/osteomyelitis

Q

Which trochlear ridge is larger?

A

Medial
Medial is massive

Q

What projection do you see Larry’s nose? What is it?

A

Lateral trochlea of talus (tarsus)
DMPLO

Q

What is the earliest sign of osteoarthrosis?

A

Osteophyte formation

Q

Define: Bone Spavin

A

Osteoarthrosis of the distal intertarsal and tarsometatarsal joints

Q

What is highlighted with the flexed tarsus skyline?

A

Sustentaculum tali
DDFT runs over