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.

Radiographic and CT features of metallosis in a lame dog after total hip replacement: the cloud sign / F.D. Lucaci, P. Battiato, J. Bassi, D.D. Zani, D. De Zani, A. Vezzoni, A. Stranieri, M. Longo. - In: VETERINARY RADIOLOGY & ULTRASOUND. - ISSN 1058-8183. - 65:1(2024 Jan), pp. 49-53. [10.1111/vru.13322]

Radiographic and CT features of metallosis in a lame dog after total hip replacement: the cloud sign

P. Battiato;J. Bassi;D.D. Zani;D. De Zani;A. Stranieri;M. Longo
Ultimo
2024

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.
bubble sign; hip dysplasia; postoperative complication
Settore VET/09 - Clinica Chirurgica Veterinaria
Settore VET/03 - Patologia Generale e Anatomia Patologica Veterinaria
gen-2024
22-dic-2023
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1036208
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