Application of Kirschner wire placement guided technology in paediatric supracondylar humerus fractures

Table 3 Comparison of perioperative data and fracture healing time between two groups

Group	Operation time^a, min^c	Fluoroscopy times, time^c	Rate^b	Baumann angle^c	Carrying angle^c	Fracture healing time, week^c
Guided, N = 51	31.27 ± 4.920	15.53 ± 2.063	83/19	72.31° ± 1.794°	10.00° ± 1.483°	3.96 ± 0.848
Non-guided, N = 54	38.72 ± 4.249	20.69 ± 2.126	21/87	72.56° ± 1.777°	10.17° ± 1.463°	4.13 ± 0.778
t/χ²	-8.316	-12.600	80.478	0.828	0.731	0.403
P value	< 0.001	< 0.001	< 0.001	0.489	0.564	0.290

^atime from the auxiliary reduction device installation to the K-wire tail cutting
^bfor needle placement one / more times
^cmean ± SD

ISSN: 1471-2474