Table 4 Nerve cross-sectional area among patients and control

Median nerve

 Wrist

4.74 ± 0.54

4.90 (4.0–5.90)

5.92 ± 0.90

6 (4.50–8.50)

6.02 ± 0.94

6 (4.50–8.50)

^Up₁ < 0.001^*

^Up₂ < 0.001^*

^Zp₃ = 0.102

 Forearm

6.17 ± 1.27

5.90 (4–9.30)

8.04 ± 0.96

7.90 (6.70–10.70)

8.40 ± 1.11

8.10 (6.70–10.7)

^tp₁ < 0.001^*

^tp₂ < 0.001^*

^t1p₃ = 0.010^*

 Upper arm

6.58 ± 0.84

6.40 (5.50–8.50)

8.85 ± 0.55

9 (7.90–9.80)

8.74 ± 0.53

8.80 (7.90–9.80)

^Up₁ < 0.001^*

^Up₂ < 0.001^*

^Zp₃ = 0.046^*

Ulnar nerve

 Wrist

3.54 ± 0.59

3.60 (2.90–5)

5.26 ± 0.99

4.90 (3.80–7.80)

5.50 ± 0.86

5.50 (4.50–7.80)

^Up₁ < 0.001^*

^Up₂ < 0.001^*

^Zp₃ = 0.034^*

 Upper arm

5.16 ± 0.67

5 (4–6.50)

7.05 ± 1.99

6.10 (4.90–11)

7.70 ± 2.01

7.90 (4.90–11)

^Up₁ < 0.001^*

^Up₂ < 0.001^*

^Zp₃ = 0.015^*

Tibial nerve at popliteal fossa

20.9 ± 2.31

21.1 (16.8–25.2)

27.4 ± 4.20

25.8 (20.9–30.9)

28 ± 2.37

28.8 (22.7–33.5)

^Up₁ = 0.001^*

^Up₂ < 0.001^*

^Zp₃ < 0.001^*

Sural nerve at calf

2.24 ± 0.40

2.30 (1.60–3)

2.32 ± 0.37

2.4(1.8– 3.2)

2.40 ± 0.38

2.3 (1.9–3.5)

^Up₁ < 0.32

^Up₂ < 0.62

^Zp₃ = 0.35