Table 2.

Comparison of Labral Width Using MRI and Intraoperative Measurement Modalities in Primary Hip Arthroscopy Cases

	MRI Measurement, mm	Intraoperative Measurement, mm	Difference, mm	P Value (Paired-Sample t Test)
All patients
3-O’clock position	6.8 ± 1.1	7.2 ± 1.5	–0.40 ± 1.8	.101
12-O’clock position	6.9 ± 1.3	7.8 ± 2.3	–0.90 ± 2.5	.008∗
9-O’clock position	6.2 ± 0.9	7.3 ± 1.6	–1.1 ± 1.6	<.001∗
Male subgroup
3-O’clock position	7.0 ± 1.2	7.3 ± 1.4	–0.26 ± 2.0	.512
12-O’clock position	7.1 ± 1.4	8.0 ± 1.4	–0.85 ± 1.8	.026∗
9-O’clock position	6.5 ± 0.9	7.6 ± 1.4	–1.0 ± 1.5	.001∗
Female subgroup
3-O’clock position	6.6 ± 0.9	7.1 ± 1.6	–0.51 ± 1.7	.099
12-O’clock position	6.7 ± 1.2	7.6 ± 2.8	–0.94 ± 3.0	.083
9-O’clock position	5.9 ± 0.8	7.0 ± 1.7	–1.1 ± 1.7	.001∗

NOTE. Data are presented as mean ± standard deviation.

MRI, magnetic resonance imaging.

^∗Statistically significant (P < .05).