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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: Clinical and radiographic predictors of acute compartment syndrome in the treatment of tibial shaft fractures: a retrospective cohort study

Fig. 2

Plain antero-posterior radiograph of a left distal leg including the ankle, with an AO/OTA 42 A2.3 fracture, in a 33.5 years old male patient. Line A represents the distance from talar dome surface to middle of tibial fracture (118 mm in this case); the proximal and distal ends of the tibial fracture were determined taking into account potential intermediate fragments, and the midpoint of the line linking these both points was defined as the center of the tibial fracture (this step is not represented on the figure). Line B represents the distance from talar dome surface to middle of fibular fracture (104 mm in this case); the proximal and distal ends of the fibular fracture were determined taking into account potential intermediate fragments, and the midpoint of the line linking these both points was defined as the center of the fibular fracture (this step is not represented on the figure). In this example, a third spike fragment located at the posterior border of the proximal main fragment and visible on the lateral radiograph (Fig. 4) was present, and its position was anticipated when drawing the proximal and distal end points of the fracture on the antero-posterior radiograph; for this reason, the center of the fibular fracture seems close to what appears to be the distal end of the fracture on the antero-posterior radiograph. Line C represents the distance from tibial fracture to fibular fracture (14 mm in this case). Line D represents over-riding of tibial fracture, which is measured between two corresponding bony landmarks on both main fragments (23 mm in this case)

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