Short and mid-term outcomes and functional results in metal-on-metal hip resurfacing arthroplasty at 5 years follow-up: the Spanish experience

Table 3 Flexion range of motion (ROM) pre-surgery and post-surgery

Flexion	Mean	SD	CI 95%	Median	Min	Max	n	Missing data	p-value
Pre-surgery	87.90	8.09	86.57–89.23	90	40	110	145	0
1-month post-surgery	86.36	9.25	84,83–87.89	90	0	105	143	2	0.1694
3-months post-surgery	91.92	9.60	90.33–93.51	90	0	110	143	2	< 0.001
6-months post-surgery	96.39	10.13	94.72–98.07	95	0	115	143	2	< 0.001
1-year post-surgery	98.56	10.17	96.88–100.24	100	0	115	143	2	< 0.001

The p-value corresponds to a comparison between the flexion ROM values pre-surgery and different post-surgery evaluations using the Wilcoxon Test
SD standard deviation, CI confidence interval

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