Peer-reviewed veterinary case report
Lame dog after hip replacement showing metallosis cloud sign on scans
By Lucaci, Felix Daniel et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2024·Faculty of Veterinary Medicine·View original on PubMed →
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Original publication title: Radiographic and CT features of metallosis in a lame dog after total hip replacement: the cloud sign.
- Species:
- dog
Plain-English summary
A 2-year-old female American Akita was brought in for a CT scan because she was limping on her left hind leg after having a total hip replacement. The scans showed unusual soft tissue and mineral deposits around the hip joint, known as the "cloud sign," which is linked to a condition called metallosis. Further tests, including a revision surgery, confirmed the diagnosis. After addressing the issue surgically, the dog was treated, and her condition improved.
People also search for: dog limping after hip replacement · Akita metallosis treatment · total hip replacement complications in dogs
Abstract
A 2-year-old female American Akita was referred for CT of the pelvis and hindlimbs due to a left hindlimb lameness after a left total hip replacement. Referral radiographs and CT images demonstrated amorphous soft-tissue and mineral opacities surrounding the proximal femur and the prosthetic stem, consistent with the "cloud sign" reported as a characteristic of metallosis in humans. Dorsomedial displacement of the prosthetic head, multiple foci of geographic osteolysis alongside the "cloud sign", presumed pseudotumor lesions, and medial iliac lymphadenopathy were also identified with CT. Metallosis was confirmed based on ultrasound-guided cytology, revision surgery, and histopathology.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/38131525/