Imaging clinical case

  • Joana Brandão Silva Pediatrics Department, Unidade 2, Centro Hospitalar Vila Nova de Gaia/Espinho
  • Mafalda Santos Pediatric Orthopedics Department, Unidade 2, Centro Hospitalar Vila Nova de Gaia/Espinho
Keywords: knee, overuse injury, Sinding-Larsen-Johansson syndrome

Abstract

A ten-year-old soccer practitioner female presented with right anterior knee pain lasting one month and exacerbated by running, with no constitutional symptoms or recent trauma. Physical examination revealed pain on the inferior pole of the patella and infrapatellar swelling.
Lateral radiography of the right knee revealed fragmentation of the lower pole of the patella. These findings are suggestive of Sinding- Larsen-Johansson syndrome, an osteochondrosis that affects the extensor mechanism of the knee and is a self-limited condition. The patient was treated with analgesics, rest, and abstention from sports activity during four weeks, with progressive improvement.

References

Valentino M, Quiligotti C, Ruggirello M. Sinding-Larsen-Johansson syndrome : A case report. J Ultrasound. 2012;15(2):127-129.

Iwamoto J, Takeda T, Sato Y, Matsumoto H. Radiographic abnormalities of the inferior pole of the patella in juvenile athletes. Keio J Med. 2009;58(1):50-53.

López-Alameda S, Alonso-Benavente A, López-Ruiz A, Miragaya-López P, Alonso-Del Olmo JA, González-Herranz P. Enfermedad de Sinding-Larsen-Johansson: análisis de factores asociados. Rev Esp Cir Ortop Traumatol. 2012;56(5):354-60.

Patel DR, Villalobos A. Evaluation and management of knee pain in young athletes: overuse injuries of the knee. Transl Pediatr. 2017;6(3):190-198.

Jaramillo D, Bancroft L, Varich L, Logsdon G. Imaging of Sports-related Injuries of the Lower Extremity in Pediatric. Radiographics. 2016;(1):1807-1827.

Published
2019-04-11
Section
What is your Diagnosis?