Orthopaedic Department, Ealing Hospital, Uxbridge Road, Southall UB1 3HW, UK.
Skeletal Radiol. 2010 Feb;39(2):193-7. doi: 10.1007/s00256-009-0804-9. Epub 2009 Sep 30.
We describe an unusual cause of an acquired cavo-varus foot deformity produced by progressive enlargement of an accessory calcaneal ossicle. A 13-year-old boy with constitutional plano-valgus flat feet noted a gradual change in foot shape associated with lateral ankle pain on ambulation following an inversion injury 2 years earlier. CT and MRI scans confirmed a large accessory calcaneal ossicle lying within the sinus tarsi, with associated marrow oedema. Following surgical excision of the ossicle, the foot returned to its original shape and the symptoms were alleviated. This is the fifth reported case of an accessory calcaneal ossicle, but the only case that has occurred in a flatfooted individual. We also present the first reported MRI images of the lesion confirming pathological marrow oedema as a response to mechanical stress.
我们描述了一种由副跟骨骨赘进行性增大引起的获得性足内翻-旋后畸形的不常见原因。一名 13 岁男孩因距下关节内翻损伤 2 年后出现平足合并进行性足形状改变和外侧踝关节疼痛，CT 和 MRI 扫描证实存在位于跗骨窦内的大副跟骨骨赘，并伴有骨髓水肿。骨赘切除术后，足部恢复到原来的形状，症状得到缓解。这是第五例报道的副跟骨骨赘病例，但也是唯一发生在扁平足患者的病例。我们还提供了该病变的首例 MRI 图像，证实病理性骨髓水肿是对机械应力的反应。
