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Sinding–Larsen–Johansson syndrome with minimally displaced patellar sleeve avulsion fracture: a case report with multimodality approach and literature review

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Abstract

Sinding–Larsen–Johansson syndrome is an osteochondrosis affecting the inferior pole of the patella. Most cases can be easily diagnosed with adequate clinical history, physical examination, and proper imaging, including conventional radiography, ultrasound, and magnetic resonance imaging. Differentiating this condition from patellar sleeve avulsion fractures is important, since treatment is frequently surgical in the latter. Overlap between these two conditions can also occur. We present a case of an 11-year-old boy, with Sinding–Larsen–Johansson syndrome on both knees and a minimally displaced acute patellar avulsion sleeve fracture of the left knee, which was treated conservatively.

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Acknowledgements

Special thanks to João Simas, MD, for drawing an elucidative illustration.

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Authors and Affiliations

  1. Department of Radiology, Centro Hospitalar Universitário de São João, Alameda Professor Hernâni Monteiro, 4200-319, Porto, Portugal

    Eduardo Negrão

  2. Faculdade de Medicina da Universidade Do Porto, Porto, Portugal

    Eduardo Negrão

  3. Department of Orthopedics, Sint Maartenskliniek, Nijmegen, The Netherlands

    Els van den Eede

  4. Department of Radiology, Sint Maartenskliniek, Nijmegen, The Netherlands

    Anastasios Kyriazopoulos & Marc G. Romijn

Authors
  1. Eduardo Negrão
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  2. Els van den Eede
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  3. Anastasios Kyriazopoulos
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  4. Marc G. Romijn
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Correspondence to Eduardo Negrão.

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Negrão, E., van den Eede, E., Kyriazopoulos, A. et al. Sinding–Larsen–Johansson syndrome with minimally displaced patellar sleeve avulsion fracture: a case report with multimodality approach and literature review. Skeletal Radiol 52, 1403–1407 (2023). https://doi.org/10.1007/s00256-022-04237-9

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  • DOI: https://doi.org/10.1007/s00256-022-04237-9

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