Radiology Packet 19

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Radiology Packet 19

• Joint Disease

2
1 year MN Labrador RetrieverBaron

• Hx Presented for evaluation of severe hip
  dysplasia. It is also noted that the patient is
  stiff in the elbows and stifles.

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1 year MN Labrador RetrieverBaron

• RF
• There is bilateral coxofemoral subluxation with
  degenerative joint changes.
• The femoral heads are flattened and somewhat
  mushroom shaped.
• The femoral necks are thickened and osteophyte
  formation is present.
• The acetabulae are shallow and there is rounding
  of their cranial margins.
• The lateral fabellae are large and irregularly
  shaped.
• There is severe degenerative joint changes in the
  right elbow.
• Osteophyte formation is present on the proximal
  radius, proximal ulna and distal humerus.
• A very large osseous fragment is present in the
  cranial aspect of the joint.
• There is prominent osteophyte formation on the
  medial coronoid process of the ulna seen on the
  oblique view.
• The joint spaces are not well defined and there
  is sclerosis of the subchondral bone.
• RD
• Degenerative joint disease
• Hip and elbow dysplasia

5
14-year old MN Shetland SheepdogJet

• Hx Presented for evaluation of hindlimb
  lameness. He has hyperflexion of his tarsi with
  palpable soft tissue thickening and crepitus of
  both joints.

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14-year old MN Shetland SheepdogJet

• RF
• In the right tarsus there is subluxation at the
  level of the tarsometatarsal joint.
• Focal punctate areas of bone lysis are seen in
  the adjacent subchondral bone surfaces at the
  tarsometatarsal joint.
• There is marked thickening of the soft tissue
  surrounding the bone lesion, particularly on the
  lateral.
• Remodeling of the distal end of the 2nd
  metatarsal bone is present.
• Changes similar to those noted in the right
  tarsus are present in both carpi at the
  carpometacarpal joint.
• There is irregular focal bone lysis in the
  subchondral bone with evidence of collapse of the
  joint spaces.
• A focal area of irregular periosteal response is
  present on the right distomedial radius.
• A smooth slightly irregular periosteal response
  is seen throughout the length of the 5th
  metacarpal bone.
• Arthritic change is present at many of the
  metacarpophalangeal joints and at several
  interphalangeal joints.
• Periosteal proliferation is present on the
  margins of the phalanges of the 5th digit
  bilaterally.
• There is thickening of the soft tissues at the
  level of the carpi and surrounding the digits.

8
14-year old MN Shetland SheepdogJet

• RD
• Rheumatoid arthritis in the tarsometatarsal and
  carpometacarpal joints bilaterally

9
3-year old M AkitaTaiko

• Hx Surgical repair of cranial cruciate ligament
  rupture 8 weeks ago. The sugical technique used
  was a fascia lata graft procedure. This is an
  intra-capsular technique. Taiko has now been lame
  for 3 weeks. The stifle is quite swollen and
  painful on palpation.

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3-year old M AkitaTaiko

• RF
• There is marked distension of the joint capsule
  as indicated by the decrease in size of the
  infrapatellar fat pad and caudal displacement of
  the gastrocnemius fascial plane.
• Extra-capsular thickening of the soft tissue is
  present.
• Osteophyte formation is present on the apex of
  the patella and the lateral aspect of the distal
  femur. The osteophytes are irregular and
  indistinctly seen indicating that this is an
  active process.
• A metallic implant and bone cement from a prior
  total hip replacement are visible in the
  medullary cavity of the femur.
• RD
• Excessive soft tissue swelling with reactive bone
  changes associated with the patella and distal
  femur
• R/O
• Septic arthritis

12
13-year old mixed breed dogBenji

• Hx Presented with left forelimb lameness and
  shoulder pain.

13
13-year old mixed breed dogBenji

• RF
• Osteophyte formation of the periarticular margins
  of the glenoid cavity and the caudal aspect of
  the humeral head is present in both views.
• There are multifocal bony opacities overlying the
  intertubercular groove of the humerus.
• The subchondral bone of the humeral head and
  glenoid is sclerotic.
• The contour of the caudal humeral head is mildly
  flattened.
• RD
• Severe degenerative joint disease of the shoulder
• Mineralization of the biceps tendon, or sheath,
  or osteochondral fragments within the bicipital
  bursa

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3-year old MN DLHDiesel

• Hx Left hindlimb lameness, decreased range of
  motion in the left tarsus and right carpus.

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3-year old MN DLHDiesel

• RF
• There is significant subchondral lysis present
  within the talus, calcaneus and central tarsal
  bone.
• There is arthritic change of the tibiotarsal,
  talocalcaneal, calcanoquartal and talocentral
  joints.
• The proximal intertarsal joint space is
  collapsed.
• There is mild thickening of the soft tissues in
  the region.
• RD
• Septic arthritis

16
3-year old MN Labrador RetrieverBuddy

• Hx Chronic left cruciate ligament rupture with
  suspected meniscal damage.

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3-year old MN Labrador RetrieverBuddy

• RF
• There is moderate distension of the joint capsule
  as indicated by decrease in size of the
  infrapatellar fat pad and caudal displacement of
  the gastrocnemius fascial plane.
• Mild degenerative joint disease is present.
• Osteophyte formation is noted on the apex (distal
  end) of the patella, trochlear ridges of the
  femur and in the lateral and medial margins of
  the proximal tibia.
• Faint areas of lucency in the proximal tibia seen
  in the CC view are evidence of subchondral lysis.
• RD
• Capsular distension with mild degenerative joint
  disease.
• R/O
• Cruciate ligament rupture.

18
1-month old Labrador Retriever

• Hx Presented with a swollen right tarsus,
  febrile.

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1-month old Labrador Retriever

• RF
• Swelling of the right tarsus, severe.
• Comparison of the right and left distal tibial
  epiphyseal bone shows some early destruction of
  the right.
• Swelling also appears to be present around the
  right stifle.
• RD
• Septic arthritis of the right tarsus, probably
  the right stifle too
• Next
• Joint aspirate for culture and sensitivity