Surgical treatment of an old avulsion fracture of the ischial tuberosity and ischial ramus: A case report

Figure 1 Imaging examinations photos. A: Plain X-ray film of the pelvis, revealing an unhealed avulsion fracture of ischial tuberosity and partial ischial ramus. The fragment is displaced anterolaterally by approximately 2 cm; B and C: Computed tomography scan and 3D reconstruction of the pelvis exhibiting a fracture nonunion of the ischial tuberosity and partial ischial ramus, with the fragment measuring 6.4 cm × 1.3 cm × 2.9 cm in size.

Figure 2 The photos of treatment. A: The fracture was exposed and the fragment was seen anterolaterally displaced during the surgery; B: The fracture was temporarily fixed with Kirschner wires during the surgery; C: Four φ 4.0-mm cannulated compression screws were inserted to fix the fracture; D: C-arm fluoroscopy displayed that the fracture was properly reduced and the screws were an appropriate length and in appropriate position.

Figure 3 The results of outcome and follow-up. A: The radiograph revealed the fracture line was fuzzy, but heterotopic ossification occurred surrounding the fracture at the 3-mo follow-up after surgery; B: The X-ray film at the 6-mo follow-up after surgery revealed that the fracture healed well without exacerbation of heterotopic ossification; C and D: The X-ray film at the 16-mo follow-up after surgery revealed that the fracture had fully healed.