| Popis: |
One day before surgery both conventional radiography and 99mTc-HDP pinhole bone scan were taken in order to anatomically and biochemically confirm the diagnosis of acute femoral neck fracture and thereby resulted in avascular necrosis of the femoral head in six consecutive patients (Bahk et al. 2017). Radiograph demonstrated fracture line (Fig. 5.1 top panel) and 99mTc-HDP pinhole bone scan showed obvious photon defect reflecting devascularized osteonecrosis, respectively (Fig. 5.1 bottom panel). Fractures were either scarcely recognized, slightly separated, or markedly deformed with fragment impaction and naive pinhole scan straightforwardly showed typical photon defect in the devascularized femoral head (Fig. 5.1 bottom panel). |
