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Radiology Package 22
Elbow
2-year old Chow Chow
“Meiling”
• Hx: Lameness localized to the right elbow.
2-year old Chow Chow
“Meiling”
• RF
– There is proliferative bone on the dorsal aspect of the anconeal process
of the ulna.
– Osteophyte formation is present on the cranial surface of the radial
head and at the cranial articular margin of the humeral condyles.
– The trochlear notch is mildy sclerotic and its articular surface is
indistinct.
– The medial coronoid process is visible through the radial head in the
lateral view.
– In the craniocaudal view there is osteophyte formation on the margin of
the medial coronoid process.
– The surface of the medial epicondyle of the of the humerus is rougher
than normal indicating the presence of proliferative new bone.
• RD
– Degenerative joint disease
– Fragmented medial coronoid process
8-year old German Shepherd
“Warlock”
• Hx: Presented with a non-weight bearing lameness of the right
forelimb of 1 weeks duration. The right elbow is swollen and painful.
8-year old German Shepherd
“Warlock”
• RF
– Ununited anconeal process is present.
– Osteophytes are present on the distal humeral epicondyles, humeral
condyles, proximal ulna and proximal radius.
– Sclerosis of the trochlear notch is present.
• RD
– Secondary degenerative joint disease
– Ununited anconeal process process
8-month old MC Chow
• Hx: Episodes of forelimb stiffness of 2 months duration. The dog
showed signs of discomfort when the left elbow was manipulated.
L
L
R
8-month old MC Chow
• RF
– There is sclerosis of the trochlear notches and an indistinct appearance
of the medial coronoid processes noted in both elbows.
– In the Craniocaudal view the medial coronoid processes appear to be
remodeled.
– A small lucent area is seen in each medial humeral condyle.
– Osteophytes are seen associated with the dorsal proximal radius
bilaterally and the anconeal process on the left.
• RD
– Bilateral medial humeral condylar OCD
– Bilateral fragmented medial coronoid process is strongly suspected
– Degenerative joint disease
7-month old German Shepherd
“Tiger”
• Hx: Lameness localized to the right forelimb. He has been lame
since the age of 4 months.
7-month old German Shepherd
“Tiger”
•
RF
–
–
–
–
There is extensive arthritic change in the elbow.
An ununited anconeal process is present.
Marked humeroulnar subluxation is evident.
A faint flattening of lucency of the medial humeral condyle is noted and is
considered evidence of osteochondrosis.
– The medial coronoid process has an indistinct appearance in the lateral view and
osteophyte formation is present on its margins in the CC view.
– Diffuse medullary sclerosis is visible in the distal humerus and in the proximal
ulna distal to the trochlear notch.
•
RD
–
–
–
–
–
–
Secondary degenerative joint disease
Ununited anconeal process
Humeroulnar subluxation
Fragmented medial coronoid process
Medial humeral condylar OCD
Panosteitis – humerus and ulna
9-month old Labrador Retriever
“Sam”
• Hx: Lameness localized to the left elbow.
9-month old Labrador Retriever
“Sam”
• RF
– There is a minor amount of proliferative bone on the dorsal aspect of the
anconeal process of the ulna.
– Osteophyte formation is present on the cranial surface of the radial
head.
– The trochlear notch is mildly sclerotic.
– The medial coronoid process is visible through the radial head in the
lateral view – it is indistinct in appearance and does not extend as far
cranially as normal.
– In the CC view there is mild osteophyte formation on the margin of the
medial coronoid process.
• RD
– Degenerative joint disease
– Fragmented medial coronoid process
9-month old Rottweiler
“Tyler”
• Hx: Lameness localized to the right forelimb. He has been lame
since 3 months of age.
9-month old Rottweiler
“Tyler”
•
RF
– The dorsal margin of the anconeal process of the ulna is slightly irregular but
there is no evidence of a significant amount of proliferative bone in the region.
– Osteophyte formation is present at the cranial articular margin of the humeral
condyles.
– The trochlear notch of the ulna is sclerotic.
– There is minimal incongruency of the joint.
– Osteophytes are present on the medial aspect of the joint in the area of the
medial coronoid process.
– The medial epicondyle of the humerus is roughened and irregular.
•
RD
– Fragmented medial coronoid process
– Secondary degenerative joint disease
– Humeroradial subluxation
12-month old German Shepherd
“Cisco”
12-month old German Shepherd
“Cisco”
• RF
– There is a focal subchondral bony lucency of the humeral trochlea
bilaterally.
– The right medial epicondyle is rough relative to the left.
• RD
– OCD of the distal humeral condyles.
2-year old Rottweiler
“Tango”
• Hx: Lameness
localized to the
right elbow.
2-year old Rottweiler
“Tango”
•
RF for right elbow
– There is proliferative bone on the dorsal aspect of the anconeal process of the
ulna.
– The trochlear notch is mildly sclerotic.
– The medial coronoid process is visible through the radial head in the lateral view
– it is indistinct in appearance and appears to end abruptly.
– In the CC view there is subtle rounding of the medial coronoid process.
•
RF for left elbow
– A faint periosteal response is visible on the dorsal aspect of the anconeal
process of the ulna.
•
RD
– Secondary degenerative joint disease present on the right elbow
– Fragmented right medial coronoid process
– Minimal degenerative joint disease of present
Mature Rottweiler
“Rebel”
• Hx: Lameness of the right forelimb. He is painful on flexion of the
elbow joint.
Mature Rottweiler
“Rebel”
•
RF
– There is a large amount of proliferative bone on the dorsal aspect of the
anconeal process of the ulna.
– Osteophyte formation is present on the cranial surface of the radial head and at
the articular margin at the cranial aspect of the humeral condyles.
– The trochlear notch is sclerotic.
– The medial coronoid process is visible through the radial head in the lateral view
but is irregular and indistinct in appearance.
– In the CC view there is a large osteophyte on the margin of the medial coronoid
process.
– The soft tissues surrounding the joint are thickened – the margins of the joint
capsule are faintly visible in the lateral view.
•
RD
– Degenerative joint disease
– Fragmented medial coronoid process
5-month old Rottweiler
“Tasha”
• RF
– The left anconeal process is
markedly remodeled and there is a
vertical irregular lucency in it.
– The subchondral bone of the ulna is
sclerotic.
– The right anconeal process is
normal.
• RD
– Left ununited anconeal process