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Negative magnetic resonance imaging in femoral neck stress fracture with joint effusion: a case report

Skeletal Radiology volume 45, pages 843–846 (2016)Cite this article

Abstract

Femoral neck stress fracture (FNSF) is well documented in the orthopedic literature and is generally associated with strenuous activities such as long-distance running and military training. The diagnostic yield of magnetic resonance imaging (MRI) for FNSF was reported to be 100 %, and early MRI is recommended when this fracture is suspected. We encountered a 16-year-old male long-distance runner with FNSF in whom the left femoral neck showed no signal changes on MRI although an effusion was detected in the left hip joint. One month later, roentgenograms revealed periosteal callus and oblique consolidation of the left femoral neck, confirming the diagnosis of compression FNSF. Because FNSF with a normal bone marrow signal on MRI is very rare, this patient is presented here.

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Authors and Affiliations

  1. Department of Orthopedic Surgery, Akita Rosai Hospital, 30 Karuizawa-Aza- Shimotai, Odate, Akita, 018-5604, Japan

    Nobutoshi Seki, Koichiro Okuyama, Keiji Kamo & Mitsuho Chiba

  2. Department of Orthopedic Surgery, Akita University School of Medicine, Akita, Akita, Japan

    Yoichi Shimada

Authors
  1. Nobutoshi Seki
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  2. Koichiro Okuyama
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  3. Keiji Kamo
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  4. Mitsuho Chiba
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  5. Yoichi Shimada
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Corresponding author

Correspondence to Nobutoshi Seki.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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The authors declare that they have no conflicts of interest.

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Informed consent was obtained from all individual participants included in the study.

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Seki, N., Okuyama, K., Kamo, K. et al. Negative magnetic resonance imaging in femoral neck stress fracture with joint effusion: a case report. Skeletal Radiol 45, 843–846 (2016). https://doi.org/10.1007/s00256-016-2371-1

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  • DOI: https://doi.org/10.1007/s00256-016-2371-1

Keywords

  • Femoral neck stress fracture
  • Magnetic resonance imaging
  • Diagnosis