Efficacy of internal fixation with mini plate and internal fixation with hollow screw for Regan-Morrey type II and III ulna coronoid fractures

Table 5 Postoperative recovery and complications in the four groups

	Mini plate group (n = 31)	Hollow screw group (n = 44)	Kirschner wire group (n = 62)	Steel wire suture group (n = 27)
Fracture healing time (week)	10.1 ± 1.3	10.8 ± 1.0	13.4 ± 1.3^*#	13.0 ± 1.6^*#
elbow flexion and extension (°)	114.6 ± 6.5	115.4 ± 8.1	95.7 ± 8.1^*#	94.4 ± 7.7^*#
forearm rotation (°)	126.0 ± 7.3	127.7 ± 6.0	103.9 ± 4.2^*#	102.5 ± 3.8^*#
Incidence of complications	0 (0%)	2 (4.55%)	20 (32.26%)^*#	10 (37.04%)^*#

Notes: measurement data or counting data were presented as mean ± standard deviation or number of cases; one-way analysis of variance (ANOVA) with replicate measurement or chi square test were used to compare multi-group data
* vs. the mini plate group, p < 0.05; ^# vs. the hollow screw group, p < 0.05

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