Correlation between the accessory anterolateral talar facet, bone marrow edema, and tarsal coalitions



The purposes of this study was to determine the prevalence of the accessory anterolateral talar facet (AALTF); to evaluate the relationship between AALTF, focal abutting bone marrow edema (FABME), and sinus tarsi edema; and to study the prevalence of tarsal coalitions in patients with the AALTF utilizing ankle MR images.

Materials and methods

5-T ankle MR images were reviewed for the presence of AALTF, FABME, sinus tarsi edema, tarsal coalition, and location and type of coalition (cartilaginous, fibrous, and osseous). Multivariate analysis was performed to examine the correlation between AALTF and the other variables.


Three hundred ninety-one consecutive patients were included (age range 5–86 years; mean age 45 years). An AALTF was present in 3.6% (14/391) of patients. The AALTF prevalence was 2% in women and 6.6% in men. There was a significantly association between AALTF and FABME (9/14, p < 0.05), sinus tarsi edema (13/14, p < 0.05), and tarsal coalition (4/14, p < 0.05).


AALTF is relatively often detected on MRI of the ankle and significantly associated with BME, sinus tarsi edema, and subtalar coalition. Patients with a tarsal coalition should be evaluated for the concurrent presence of an AALTF.

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The authors wish to thank Scott Calcaterra for the assistance with the medical illustration.

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Correspondence to Josephina A. Vossen.

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Vossen, J.A., Abbassi, M., Qian, Y. et al. Correlation between the accessory anterolateral talar facet, bone marrow edema, and tarsal coalitions. Skeletal Radiol 49, 699–705 (2020).

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  • Accessory anterolateral talar facet
  • Coalition
  • Hindfoot
  • Focal abutting bone marrow edema
  • Sinus tarsi edema