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Radiology Package 20

Radiology Package 20. Stifles. 6-year old German Shepherd “Foxy”. Hx:Bilateral hip dysplasia. Lame in the left hind for 6 weeks. Palpable cranial drawer on left stifle. 6-year old German Shepherd “Foxy”. RF

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Radiology Package 20

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  1. Radiology Package 20 Stifles

  2. 6-year old German Shepherd“Foxy” • Hx:Bilateral hip dysplasia. Lame in the left hind for 6 weeks. Palpable cranial drawer on left stifle.

  3. 6-year old German Shepherd “Foxy” • RF • There is distension of the joint capsule as indicated by the decrease in size of the infrapatellar fat pad. • Osteophyte formation is present on the patella and the trochlear ridges of the femur. • RD • Stifle effusion with mild degenerative joint disease • R/O • Cranial cruciate ligament injury

  4. 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.

  5. 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 cranial to the gastrocnemius muscle. • In the lateral view 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. It appears round and surrounded by a rim of scletoric bone. • RD • Capsular distension • Osteochondrosis of the lateral femoral condyle

  6. 12-year old DSH“Sheba” • RF • The infrapatellar fat pad is greatly compressed by increase in size of the joint capsule. • In the lateral view multiple small mineral opacity structures are present within the joint and adjacent to the patella. The largest is present in the medial aspect of the joint capsule and is thought to represent a mineralized meniscus. • Osteophyte formation is present on the patella and the trochlear ridges of the femur. • Several tiny mineral opacity fragments are visible in the soft tissue proximal to the patella. • RD • Marked capsular distension • Meniscal mineralization • R/O • Cranial cruciate ligament rupture • Mineralization of the meniscus could be secondary to injury or incidental

  7. 6-month old F Golden Retriever“Kaplan” • Hx: Presented with lameness of the left hind limb. The dog caught its’ foot 2 months ago and injured the leg at that time. The lameness has improved with rest but the dog re-injured the leg 3 days ago while trying to jump into the back of a pick-up truck. Left

  8. 6-month old F Golden Retriever“Kaplan” • RF • The infrapatellar fat pad is displaced cranially and decreased in size. • Increase in the size of the joint capsule has caused displacement of the fascial plane cranial to the gastrocnemius muscle. • A small osseous fragment is seen in the joint spaces on both the lateral and craniocaudal views. • RD • Stifle joint effusion • R/O • Probable avulsion fracture at the insertion of the cranial cruciate ligament.

  9. Adult Doberman Pinscher • Hx: Presented for a 2.5 week history of lameness in the right hind limb. History of hip dysplasia and spondylosis.

  10. Adult Doberman Pinscher • RF • The infrapatellar fat pad is in normal position as is the gastrocnemius fascial plane. • There is no evidence of joint effusion and/or synovial thickening. • The osseous structures of the joint are normal. • RD • Radiographically normal stifle

  11. 10-year old Mixed breed canine • Hx: Presented for a 2-year history of hind-end problems and difficulty in rising. The problem has gotten significantly worse in the last 6 months.

  12. 10-year old Mixed breed canine • RF • The infrapatellar fat pad is compressed by increase in size of the joint capsule. • The gastrocnemius fascial plane is displaced caudally. • Osteophyte formation is present on the patella, the trochlear ridges of the femur and on the lateral fabella. • Osteophytes are also seen on the margin of the extensor fossa of the distal femur. • The intercondylar eminences of the tibia are flattened. • RD • Stifle effusion with moderate degenerative joint disease • R/O • Cranial cruciate ligament injury

  13. 14-year old mixed breed canine • Hx: History of osteoarthritis in the coxofemoral joints and stifles. Last night the patient became recumbent and is unable to rise. Proprioceptive and motor deficits are present in the right front and left hind limbs.

  14. 14-year old mixed breed canine • RF • The infrapatellar fat pad is compressed by increase in size of the joint capsule. • The gastrocnemius fascial plane is displaced caudally. • Osteophyte formation is present on the patella, the trochlear ridges of the femur and on the lateral fabella. • The intercondylar eminences of the tibia are flattened and irregular. • Proliferative bone extends proximally onto the femoral epicondyles and along the medial and lateral surfaces of the proximal tibia. • RD • Stifle effusion with severe degenerative joint disease • Next • Cranial cruciate ligament injury

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