Tomoki Ohori

Posttraumatic calcaneocuboid impingement syndrome: A case report

Lateral ankleefoot sprain is one of the most common sportsrelated injuries in the younger generation. Following this type of sprain, patients often sustain lateral collateral ligament injury in the ankle joint; however, they occasionally complain of lateral midhind foot pain [1,2]. In cases of fracture and/or dislocation of the associated bones, the diagnosis would be easy due to the presence of strong localized symptoms and valuable findings in radiographs or computed tomography (CT) images. In contrast, if the pain is caused by some soft-tissue injury at the lateral mid-hind foot, the disorder may be overlooked because of its poor physical findings and the lack of remarkable bony lesions in imaging studies. Therefore, this may lead to prolonged lateral mid-hind foot pain after trauma. Some soft-tissue injuries causing persistent lateral mid-hind foot pain have been reported. Cuboid syndrome is calcaneocuboid joint incongruity derived from chronic deficiency of the bifurcated and/or the dorsal calcaneocuboid ligament [1e8]. Peroneal tendon disorders include tendon tear, tendinopathy, tenosynovitis, painful os peroneum syndrome, and distal tendon dislocation (superior subluxation of the peroneus longus due to inferior peroneal retinaculum tear) [9e14]. However, there is no report of residual lateral mid-hind foot pain caused by hypertrophic scar tissue impingement in the calcaneocuboid joint after ankleefoot sprain found in