• PLIF is one of the surgical techniques for spinal arthrodesis. • Treatment indications are degenerative disease or instability following trauma, tumour, or infection. • Screw loosening is a frequent complication that can occur after surgery. • Percutaneous facet consolidation under dual guidance seems to be a feasible technique. • The procedure is performed under local anaesthesia using a minimally invasive approach.

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We report on a 14-year-old girl with minimally displaced pelvic girdle and acetabular roof fracture following motor vehicle trauma, treated percutaneously under CT and C-arm fluoroscopic guidance by an interventional radiologist. After informed consent from the patient's parents, under surgical aseptic conditions and under general anesthesia, three screws were positioned adequately under dual guidance by a radiologist and without immediate or long-term complication. The patient was mobilized 48 h after the procedure and resumed normal activities after 1 month. Even though the technique has been described before on adults, to our knowledge this is the first time it has been described on a pediatric patient.

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Surgical repair of pertrochanteric and subtrochanteric fractures in the elderly is usually achieved using an endomedullary nail. Unfortunately, even today, some of the patients who undergo this intervention develop periprosthetic bone absorption over time that can lead to loosening of the prosthesis, resulting in pain, joint instability and the need for revision surgery. Surgical revision is hindered by potential complications related to patients' existing underlying medical conditions. It is often the case that these patients are weak and present comorbidities, which can lead to an absolute contraindication to surgery. An interesting alternative could be the stabilisation by percutaneous injection of cement (cementoplasty) in the periprosthetic space under CT and fluoroscopic guidance. In patients with absolute contraindication we performed percutaneous cementoplasty as treatment for femoral prosthesis loosening. Our procedure was technically a success following the end of the intervention period (follow-up: 6 months). The patient no longer experienced significant pain and showed stability of the prosthesis, as demonstrated by CT.