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

Table 5

Inter- and intraobserver reliability for fracture involvement determined using six measurement methods.

Examiner	Plain radiographs	Axial CT linear	Sagittal CT linear	Axial CT plane	3D CT linear	3D CT surface
Chief-chief	4.66	3.01	3.25	2.37	2.59	2.01
Attending-attending	4.79	3.18	3.62	2.11	2.92	1.91
Resident-resident	7.49	3.13	3.99	2.25	3.11	2.68
Chief-attending	7.49	4.60	4.60	5.28	3.55	1.81
Chief-resident	7.51	5.35	6.28	4.80	3.69	1.98
Attending-resident	5.46	5.59	5.90	5.88	3.75	2.79

Values are presented as standard error of measurement; the larger the standard error of measurement, the lower the reliability.