Nonsyndromic Massive Tarsal and Tarsometatarsal Coalitions in a Young Female

Massive tarsal coalition with extended tarsometatarsal coalition in a child: a case report

Tarsal coalition refers to the union of two or more tarsal bones, which mostly involves the calcaneonavicular and talocalcaneal joints; it is rarely found in multiple unions or unions extended to the metatarsal bones. Nearly 50% of cases occur bilaterally and can be either symmetrical or asymmetrical. We described a rare case of symmetrically bilateral tarsal coalitions involving all the tarsal bones, except for the medial cuneiform, and extending to the fourth metatarsal bones in a 5-year-old boy. This patient exhibited no obvious symptoms and had not received any further intervention, only regular follow-up. To our knowledge, this is the first report of this type of massive coalition involving the union of six tarsals and one tarsometatarsal bilaterally.

One-Bone Tarsus: A Case Report

Tarsal coalition is a condition characterized by abnormal connections between ≥2 tarsi. Although tarsal coalition is not rare, tarsal coalitions involving >2 tarsi are very unusual. In this report, we describe a case of multiple tarsal coalitions in a 24-year-old male who experienced progressively worsening pain for 3 to 4 months before presenting for care. This case was unique in that all the tarsal and tarsometatarsal bones in the foot were fused and formed 1 integrated tarsal. All of the metatarsals were fused as well, and the patient had no joints or ranges of motion in the hindfoot or midfoot. The patient's pain was responsive to anti-inflammatory medications, and no surgical intervention was necessary. To the best of our knowledge, this is the most extensive case of multiple tarsal coalitions described in the literature to date.