Comparative analysis of elbow radiographic measurements in patients with supracondylar humerus fractures and healthy controls

Table 1 Comparison of elbow angles measured in anteroposterior and lateral views among groups, mean ± SD

	SCHF (n = 78 hasta)	DRF (n = 40)	Healthy volunteers (n = 98)	P value
Bauman angle	74.33 ± 4.69	75.14 ± 3.39	76.16 ± 3.73	0.012
Humeroulnar angle	11.26 ± 4.31	9.51 ± 2.99	8.52 ± 3.47	< 0.001
Humerus metaphysis-diaphysis angle1	87.2 ± 3.56)	87.68 ± 2.92	88 ± 2.02	0.0051
Humerus shaft-condylar angle	35.5 ± 8.97	NA2	36.67 ± 6.39	0.3373
Lateral capitellohumeral angle	49.77 ± 10.29	NA2	50.15 ± 9.99	0.8063

¹Since it did not conform to a normal distribution, the median (interquartile range) was used as a descriptive statistic for the humerometaphyseal angle, and the Kruskal-Wallis test was used for statistical analysis.

²Since the elbow lateral radiographs of the patients with distal radius fractures could not be obtained retrospectively and completely, this group was not included in the comparisons of the angles measured in the lateral plane.

³Since the Radius Distal Fracture group was not included in the comparison in the angles measured from the lateral plane, the Independent Samples t-test was used to compare the other two groups.

SCHF: Supracondylar humerus fractures; DRF: Distal radius fractures; NA: Not available.

Table 2 Post-hoc analysis of data showing significant differences among groups

		SCHF	DRF	Healthy volunteers
Bauman angle	SCHF	NA	0.586	0.013
	DRF	0.586	NA	0.409
	Healthy volunteers	0.013	0.586	NA
Humeroulnar angle	SCHF	NA	0.055	< 0.001
	DRF	0.055	NA	0.367
	Healthy volunteers	< 0.001	0.367	NA
Humerus metaphysis-diaphysis angle	SCHF	NA	0.160	0.001
	DRF	0.160	NA	0.187
	Healthy volunteers	0.001	0.187	NA

SCHF: Supracondylar humerus fractures; DRF: Distal radius fractures; NA: Not available.