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Table 5 Preoperative arc of motion vs AP diameter/morphological grade

From: Severity and location of lumbar spine stenosis affects the outcome of total knee arthroplasty

Intervertebral level

AP diameter regression coefficient (p value)

Morphological grade regression coefficient (p value)

L1–2

17.64 (< 0.001)**

7.18 (< 0.001)**

L2–3

13.57 (< 0.001)**

6.76 (< 0.001)**

L3–4

12.37 (0.001)**

5.06 (< 0.001)**

L4–5

10.93 (< 0.001)**

4.24 (< 0.001)**

L5–S1

4.47 (0.15)

4.67 (0.70)

Worst level of stenosis

15.76 (< 0.001)**

5.20 (< 0.001)**

  1. **Statistically significant