Symptomatic and asymptomatic accessory navicular bones: findings of Tc-99m MDP bone scintigraphy

Clin Radiol. 2000 May;55(5):353-5. doi: 10.1053/crad.2000.0436.


Aim: The accuracy of bone scintigraphy in diagnosing symptomatic accessory navicular bones has not been well studied. We conducted a retrospective study to explore the results and use of scintigraphy in symptomatic and asymptomatic accessory navicular bones.

Materials and methods: Thirteen patients with a total of 13 symptomatic and 10 asymptomatic accessory navicular bones were included in the study. We used a scoring system to grade the scintigraphic abnormalities. The patients' symptoms and scintigraphic findings were recorded.

Results: Though focally increased radiopharmaceutical uptake was observed in all symptomatic accessory naviculars, half of the asymptomatic accessory navicular bones had the same manifestations. The scoring system was of no value in differentiating symptomatic from asymptomatic accessory navicular bones.

Conclusion: Bone scintigraphy is a sensitive but not a specific tool for diagnosing a symptomatic accessory navicular.

MeSH terms

  • Adolescent
  • Adult
  • Child
  • Female
  • Foot Deformities, Congenital / diagnostic imaging*
  • Humans
  • Male
  • Radionuclide Imaging
  • Radiopharmaceuticals*
  • Retrospective Studies
  • Sensitivity and Specificity
  • Tarsal Bones / abnormalities*
  • Tarsal Bones / diagnostic imaging
  • Technetium Tc 99m Medronate*


  • Radiopharmaceuticals
  • Technetium Tc 99m Medronate