BACKGROUND: Tarsal coalition is an abnormal union between 2 or more tarsal bones that can potentially cause pain, stiffness, and altered foot biomechanics.

CASE REPORT: A 49-year-old man presented to the clinic with chronic dorsal pain in the left foot. Magnetic resonance imaging (MRI) revealed multiple unilateral nonosseous calcaneonavicular and talocalcaneal coalitions, with associated bone marrow edema. Conservative treatment of the condition, including range-of-motion and strengthening exercises, resulted in gradual improvement.

CONCLUSION: This case underscores the importance of MRI in detecting nonosseous coalitions and associated edema. Notably, the presence of multiple coalitions in a nonsyndromic patient is rare, as such findings are typically associated with syndromic conditions. Awareness of this possibility aids accurate diagnosis and management.

KEYWORDS: Bone, case report, magnetic resonance imaging, midfoot, union