Quantitative Evaluation of Articular Involvement of Posterior Malleolus Associated with Operative Indication: A Comparative Study of Six Methods Based on Radiography and CT

Table 2

Fracture involvement determined using six measurement methods.

Measurement method	Fracture involvement in mean ± SD (%)	95% CI
Plane radiograph linear	24.6 ± 7.9	23.1–26.1
Axial CT linear	26.0 ± 8.9	24.3–27.7
Sagittal CT linear	25.8 ± 7.8	24.3–27.3
Axial CT plane	18.8 ± 7.9	17.3–20.3
3D CT linear	26.7 ± 8.3	25.1–28.3
3D CT surface	16.0 ± 8.4	14.4–17.6