unusual periarticular subcortical signal alterations on MRI. US induced?

Hi,

Claudio, Julio, thank you for the case contributions.

I just had a flashback….

Andrew Grainger, Jay Ives and later Hatice Tuba Sanal (2/2019) posted cases on OCAD (attached) with similar but not identical unusual appearances with varying hypothesis what this could represent (bisphosphonates etc.).

I never heard back about follow-up on these cases but seeing the examples from Brazil and two of the references (below) and really wonder if were looking at the same phenomenon?

Thinking along the lines of an external cause of these findings, if it’s not ultrasound in some patients (or bone density measurements with US?), could it be something else we are exposed to in modern life? Can we exclude that it’s possibly even related to particular MR sequences?

What are your thoughts?

2) Kim SJJ, Kang Y, Kim DH, Lim JY, Park JH, Oh JH. Focal Bone Marrow Lesions: A Complication of Ultrasound. Clinics in Shoulder and Elbow 2019; 22:40-45.

12) Yeh L-R, Chen CKH, Tsai M-Y, Teng H-C, Lin K-L. Focal Bone Abnormality as a Complication of Ultrasound Diathermy: A Report of Eight Cases. Radiology 2011; 260(1):192-198

Björn

From: ocad-msk@googlegroups.com <ocad-msk@googlegroups.com> On Behalf Of Julio Brandao
Sent: 02 March 2021 06:12
To: OCAD <ocad-msk@googlegroups.com>; claudiosilveira@hotmail.com
Subject: RE: OCAD CASE – HEEL PAIN

—EXTERNAL EMAIL. Please exercise caution when opening attachments or clicking on links—
Good morning,

We are finding some really similar bone lesions related to post-ultrasound diathermy therapy, frequently used here in Brazil.

Please find enlosed and educational exibit about.

Best

JULIO

________________________________
De: ocad-msk@googlegroups.com<mailto:ocad-msk@googlegroups.com> <ocad-msk@googlegroups.com<mailto:ocad-msk@googlegroups.com>> em nome de Claudio Silveira <claudiosilveira@hotmail.com<mailto:claudiosilveira@hotmail.com>>
Enviado: terça-feira, 2 de março de 2021 08:51
Para: OCAD <ocad-msk@googlegroups.com<mailto:ocad-msk@googlegroups.com>>
Assunto: ENC: OCAD CASE – HEEL PAIN

Good morning,

I would like your opinion about this case.

Best

Claudio

Dr. Cláudio Régis Sampaio Silveira
Médico Radiologista – Músculoesquelético
Diretor da São Carlos Imagem
Instituto São Carlos de Ensino e pesquisa
Ex- Presidente da Sociedade Cearense de Radiologia ( 2009-2011)
Membro titular do Colégio Brasileiro de Radiologia-CBR
International Member American Roentgen Ray Society- ARRS
________________________________

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