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Work-Related Musculoskeletal Disorders: Report, Workshop Summary, and Workshop Papers (1999)
Board on Human-Systems Integration (BOHSI)

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. "Biological Response of Peripheral Nerves to Loading: Pathophysiology of Nerve Compression Syndromes and Vibration Induced Neuropathy." Work-Related Musculoskeletal Disorders: Report, Workshop Summary, and Workshop Papers. Washington, DC: The National Academies Press, 1999.

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Biological response of Nerves to Loading

Table 2. Mean (S.D.) extraneural pressure within the carpal tunnel in patients and control subjects with the wrist moved passively to three postures. Pressures are reported in kPa.

 

Patients with Carpal Tunnel Syndrome

Control Subjects

 

No. of wrists (subjects)

Neutral

Flexion

Extension

No. of wrists (subjects)

Neutral

Flexion

Extension

Gelberman et al. 198124,1

15

4.3 (0.5)

12.5 (4.5)

14.7 (2.9)

12 (12)

2.5

Werner et al. 1983 92,2

16

4.1

10.0

14.0

Szabo et al. 198981,3

22 ( 22)

1.3

4.3 (na)

6.8 (na)

 6 ( 6)

0.7 (na)

2.1 (na)

3.6 (na)

Okutsu et al. 198962,4

62 ( 46)1

5.7 (2.3)

25.6 (8.5)

29.6 (5.9)

162(16)

1.9 (1.3)

19.2 (8.8)

21.1 (8.7)

Luchetti et al. 198936,5

30 ( 26)

5.9 (2.7)

 4( 4)

2.0 (2.4)

Rojviroj et al. 199068,6

61 ( 33)

1.6 (1.6)

3.6 (2.6)

4.4 (3.3)

16(32)

0.5 (0.3)

1.2 (0.8)

1.7 (0.9)

Seradge et al. 199573,7,9

81 ( 72)

5.8 (4.3)

10.6 (5.3)

13.5 (6.8)

21 (21)

3.2 (2.1)

13.1 (9.2)

15.9 (10.0)

Hamanaka et al. 199526,8

957 (647)

8.0 (4.2)

31 (31)

2.0 (1.4)

1 carpal tunnel syndrome: 11 male, 4 female, mean age 56 years; control: information not available

2 carpal tunnel syndrome: 1 male, 15 female, mean age 46 years

3 carpal tunnel syndrome: 6 male, 16 female, mean age 51 years; control: 6 male, mean age 32 years

4 carpal tunnel syndrome: 16 male, 30 female, mean age 51 years; control: 10 male, 6 female, mean age 36 years

5 carpal tunnel syndrome: 1 male, 25 female, mean age 51 years; control: 1 male, 3 female, mean age 48 years

6 carpal tunnel syndrome: 8 male, 25 female, mean age 46 years; control: 12 male, 4 female

7 carpal tunnel syndrome: 18 male, 54 female, mean age 46 years; control: 10 male, 11 female, age range 20 to 74 years

8 carpal tunnel syndrome: 253 male, 394 female, mean age 54 years; control: 19 male, 12 female, mean age 38 years

9 active wrist flexion and extension during pressure measurements

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