Usefulness of computed tomography based three-dimensional reconstructions to assess the critical shoulder angle

Figure 1 Radiograph: Measurement of the critical shoulder angle on a true anteroposterior radiograph, classified as Type A using the Suter-Henninger criteria[5].

Figure 2 Computed tomography: measurement of the critical shoulder angle on a semi-transparent three-dimensional reconstruction of computed tomography data.

Figure 3 Inter-method correlation: Critical shoulder angle measurements compared between radiographic and computed tomography-based methods. CT: Computed tomography.

Figure 4 Intra-observer agreement (radiographs) (Bland-Altman plots): Critical shoulder angle measurements repeated after a one-week interval. A: Radiographs; B: Computed tomography-based method. CT: Computed tomography.

Figure 5 Inter-observer agreement (radiographs) (Bland-Altman plots): Critical shoulder angle measurements compared between Observers 1 and 2. A: Radiographs; B: Computed tomography-based method. CT: Computed tomography.