Radiology Package 23

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Radiology Package 23

• OCD

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16-month old Labrador RetrieverNipper

• Hx 2 week history of lameness in the left hind.
  The tarsus is swollen and there is crepitation
  and pain on palpation of the joint.

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16-month old Labrador RetrieverNipper

• RF
• The right tarsus is normal and is provided for
  comparison.
• In the left stifle there is evidence of capsular
  distension of the tibiotarsal joint.
• There is widening of the medial aspect of the
  tibiotarsal joint and the medial trochlear ridge
  appears shorter than that in the right tarsus.
• In the lateral view careful evaluation shows
  subtle flattening of mid-to plantar surface of
  one of the trochlear ridges.
• The articular surface of the distal tibia is
  subtly flattened, an indication of early
  osteoarthritis.
• RD
• Osteochondrosis of the medial trochlear ridge of
  the talus

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14-month old Old English Sheepdog

• Hx Presented with left forelimb lameness of
  one-months duration. Initially the dog was lam
  after rest but now the lameness is almost
  constant. The lameness is worse after exercise.
  PE reveals pain when the left shoulder is
  manipulated.

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14-month old Old English Sheepdog

• RF
• There is an irregular radiolucent defect in the
  subchondral bone on the caudal aspect of the left
  humeral head.
• Faint sclerosis is preset surrounding the defect.
• Immediately adjacent to the defect is a thin,
  linear radiopacity within the joint space.
• The articular margins of the caudal aspect of the
  humeral head and glenoid cavity of the scapula
  are irregular.
• The right shoulder has a radiolucent defect in
  the subchondral bone on the caudal aspect of the
  humeral head.
• RD
• Bilateral osteochondritis dissecans of the
  shoulders
• Cartilaginous flap is visible in the left shoulder

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10-month old KuvaszMariuska

• Hx Bilateral forelimb lameness and shoulder pain.

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10-month old KuvaszMariuska

• RF
• Flattening of the subchondral bone of the caudal
  surface of both humeral head is present.
• RD
• Osteochondrosis of both humeral heads

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7-month old Newfoundland

• Hx Presented for evaluation of an OCD lesion in
  the right shoulder. On PE it is noted that there
  is mild joint effusion in both stifles.

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7-month old Newfoundland

• RF
• The infrapatellar fat pad is displaced cranially
  and decreased in size.
• Increase in size of the joint capsule has caused
  displacement of the fascial plane of the
  gastrocnemius muscle.
• In the lateral biew there is an ill-defined area
  of lucency in one of the femoral condyles. The
  lucent area is dome-shaped with the base of the
  dome at the articular surface of the bone.
• In the CC view the area of lucency is visible in
  the lateral femoral condyle. In this view it
  appears round and is surrounded by a rim of
  sclerotic bone.
• RD
• Capsular distension (joint effusion and/or
  synovial thickening)
• Osteochondrosis of the lateral femoral condyle
• Subchondral bone cyst

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4-month old German Shepherd

• Hx Lame in the left hind limb for 4 days.

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4-month old German Shepherd

• RF
• There is evidence of moderate capsular
  distension.
• In the lateral view there is irregular and
  fimbriated pattern of mineralization in the
  femoral condyles. This gives a flattened
  appearance to the condyles.
• In the CC view this change in appearance of the
  condyles is difficult to appreciate but is
  present in the lateral femoral condyle.
• RD
• Mineralization of the femoral condyles

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11-month old MN German Shepherd Cisco

• Hx Intermittent lameness of right forelimb.
  Resists palpation of elbow.

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11-month old MN German Shepherd Cisco

• RF
• In the right elbow there is a defect in the
  medial humeral condyle.
• In the left elbow a faint area of lucency is
  present in the medial humeral condyle.
• Careful inspection of the left elbow reveals the
  presence of a tiny linear mineral opacity
  structure in the lucent area. This is the
  cartilage flap that has elevated from the bone
  and undergone mineralization.
• RD
• Bilateral OCD of the medial humeral condyle

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1-year old RottweilerRuko

• Hx Left hind limb lameness. Mild swelling of the
  tarsus is present.

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1-year old RottweilerRuko

• RF
• There is mild soft tissue swelling surrounding
  the tarsus.
• The subchondral bone of the medial ridge of the
  talus is abnormal.
• The DP view of the right tarsus is normal.
• RD
• Osteochondrosis of the medial ridge of the left
  talus