Summary
This report describes a case of a solitary unicameral patellar bone cyst in a young
dog. A five-month-old, male Dobermann Pinscher dog was referred for a 10-day left
hindlimb lameness. A mild swelling of the peripatellar soft tissues of the left patella
was detected upon physical examination. Signs of pain were elicited upon direct palpation
of the patella. Radiographic examination revealed an oval radiolucency within the
medullary cavity at the base of the left patella. Radiographic examination, arthroscopy,
and histopathology findings supported the diagnosis of a benign patellar bone cyst.
The condition was treated by surgical curettage and autogenous bone graft harvested
from the ipsilateral proximal tibia. Clinical signs, including lameness and signs
of pain upon deep palpation, disappeared three weeks after surgery. Follow-up re-evaluation
five years after surgery revealed no recurrence of the cyst and the patient was asymptomatic.
Keywords
Patella - bone - cyst - dog - canine