Treatment for subtrochanteric fracture and subsequent nonunion in an adult patient with osteopetrosis: A case report and review of the literature

Figure 1 X-ray and three-dimensional reconstructive computed tomography of the patient after injury. A: Antero-posterior radiograph of the pelvis showing increased bone density of pelvic bones and bilateral femurs, thickened cortical bone, and narrowed bone marrow canal; B and C: Antero-posterior and lateral preoperative radiographs of the left subtrochanteric fracture; D: 3D reconstructive computed tomography of the left subtrochanteric fracture showed discontinuous cortical bone of the left proximal femur, and separation and displacement of the bone fragments.

Figure 2 Postoperative X-ray images. The imaging results showed that internal fixation was accurate, with good apposition and alignment.

Figure 3 Plain radiography at 2, 3, and 10 mo postoperatively showed that the fracture line was still clearly visible, with no obvious signs of fracture healing. A: X-ray at 2 mo after operation; B: X-ray at 3 mo after operation; C: X-ray at 10 mo after operation.

Figure 4 Antero-posterior and lateral radiographs of the left femur. A: Antero-posterior and lateral radiographs of the left femur before platelet-rich plasma (PRP) + radial extracorporeal shock wave therapy (rESWT); B: Antero-posterior and lateral radiographs of the left femur showing the callus growing at the original fracture site, and the medial fracture line almost disappeared 10 mo after three PRP + rESWT sessions.