. Author manuscript; available in PMC: 2023 Nov 21.

Published in final edited form as: Int Orthop. 2022 Dec 23;47(4):1051–1060. doi: 10.1007/s00264-022-05659-9

Table 4.

Correlation between muscle and μCT parameters

Association between muscular parameters and the bone measurements
		CSA PPM	fCSA PPM	FAT PPM	FI PPM	CSA Psoas	fCSA Psoas	FAT Psoas	FI Psoas
Cortical	BV/TV [%]	0.590 ^**	0.584 ^**	0.151	− 0.075	0.018	0.159	− 0.290	− 0.372
	TMD [mg/cm³]	0.439 ^*	− 0.010	0.602 ^**	0.538 ^**	0.052	0.253	− 0.555^**	− 0.622^**
	AD [mg/cm³]	0.586 ^**	0.519 ^**	0.231	0.017	− 0.009	0.154	− 0.378	− 0.444^*
Trabecular	BV/TV [%]	0.607 ^**	0.610 ^**	0.198	− 0.140	0.102	0.185	− 0.152	− 0.282
	CD [1/mm³]	0.482 ^*	0.679 ^**	− 0.124	− 0.418^*	0.139	0.111	− 0.024	− 0.118
	SMI	0.127	0.155	− 0.098	− 0.092	− 0.350	− 0.282	− 0.135	0.009
	Tb.N [1/mm]	0.437 ^*	0.522 ^**	− 0.050	− 0.292	0.199	0.199	− 0.061	− 0.167
	Tb.Th [mm]	0.416^*	0.415 ^*	0.145	− 0.119	− 0.210	− 0.043	− 0.254	− 0.279
	Tb.Sp [mm]	− 0.333	− 0.417^*	0.112	0.296	− 0.048	− 0.032	0.091	0.122
	TMD [mg/cm³]	0.057	− 0.097	0.242	0.241	0.025	0.153	− 0.139	− 0.200
	AD [mg/cm³]	0.597 ^**	0.514 ^**	0.268	0.039	0.032	0.142	− 0.164	− 0.276
	BS/BV [mm²/mm³]	− 0.221	− 0.037	− 0.412^*	− 0.234	0.052	− 0.089	0.285	0.383

Significant values are in bold. ρ-values marked with

are significant at the 0.05 level. ρ-values marked with

^**

are significant at the 0.01 level. BV/TV, bone volume fraction; CD, connectivity density; SMI, structure model index; Tb.N, trabecular number; Tb.Th, trabecular thickness; Tb. Sp, trabecular separation; TMD, tissue mineral density; AD, apparent density; BS/BV, specific bone surface; CSA, cross-sectional area; fCSA, functional cross-sectional area; FAT, the total area of fat; FI, percentage of fat in total muscle