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Table 2 BMD, T-score, and Z-score in LSS patients planned for surgery

From: Preoperative dual-energy X-ray absorptiometry and FRAX in patients with lumbar spinal stenosis

Lumbar level

BMD

T-score

Z-score

AP

Lateral

Lateral mid

AP

Lateral

Lateral mid

AP

Lateral

Lateral mid

L2

1.023 ± 0.203

0.626 ± 0.143 ***

0.527 ± 0.163 ***

− 0.1 ± 1.8

− 2.3 ± 1.4 ***

− 2.7 ± 1.2 ***

1.7 ± 1.9

0.6 ± 1.5 ***

0.2 ± 1.2 ***

L3

1.049 ± 0.208

0.661 ± 0.152 ***

0.573 ± 0.190 ***

0.1 ± 1.9

− 2.2 ± 1.7 ***

− 2.0 ± 1.7 ***

2.0 ± 2.0

0.7 ± 1.8 ***

0.5 ± 1.8 ***

L4

1.138 ± 0.202

0.670 ± 0.197 ***

0.628 ± 0.229 ***

0.7 ± 1.8

− 1.1 ± 2.0 ***

− 1.6 ± 1.8 ***

2.6 ± 1.9

1.6 ± 2.3 ***

0.9 ± 2.0 ***

total

1.056 ± 0.186

0.682 ± 0.135 ***

0.578 ± 0.140 ***

0.5 ± 1.7

− 1.7 ± 1.6 ***

− 2.2 ± 1.3 ***

1.9 ± 1.8

1.7 ± 2.0

1.0 ± 1.8 ***

  1. BMD, T-score, and Z-score for lumbar spinal stenosis patients (LSS) in three different projections, anterior-posterior (AP), lateral, and lateral mid
  2. Results are shown for each single vertebra (L2, L3, L4) and also for these vertebrae combined measurements in different projections for single vertebrae differed significantly when comparing AP with lateral and AP with lat-mid. ***p < 0.001