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Juxta-articular bone cyst in a dog: stabilisation with transarticular fixator and computed tomographic follow-up


A six-month-old, 27 kg, entire male labrador was presented with an acute onset of severe left thoracic limb lameness. CT of both thoracic limbs revealed a well-delineated region of lucency in the distal humerus consistent with a bone cyst. The cyst was drained, curetted and packed with autogenous cancellous bone graft combined with freeze-dried canine demineralised bone matrix. Temporary stabilisation was achieved with a hinged transarticular external skeletal fixator. Follow-up CT six weeks after surgery revealed the cyst to be largely filled in by amorphous mineralised tissue. Eight months following surgery, CT revealed normal appearance of the bone compared with the previous study. CT provided valuable information regarding origin, size and location of the lesion itself and allowed to accurately plan the surgery. The postoperative CT images provided an accurate indication of the bone healing describing the increased bone density and the complete healing of the bone cyst.

  • orthopaedics
  • computed tomography (CT)
  • bone cyst
  • transarticular external skeletal fixator

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