From: A cross-sectional study of the relation between symptoms and physical findings in computer operators
Muscle | Number of limbs with weakness (median pain score) | |||||||
---|---|---|---|---|---|---|---|---|
Mouse operating limbs | Non-mouse operating limbs | Mouse operating limbs | Non-mouse operating limbs | |||||
Grade 4+ | Grade 4 or less | Grade 4+ | Grade 4 or less | Kendall's tau-b | P | Kendall's tau-b | P | |
Pectoral | 1 (3) | - | 1 (0) | 1 (0) | 0.018 | 0.8544 | -0.0553 | 0.5852 |
Deltoid | 17 (3) | 3 (5) | 12 (1 1/2) | - | 0.1731 | 0.0498 | 0.2092 | 0.0316 |
Latissimus | 6 (5 1/2) | - | 1 (0) | - | 0.1023 | 0.2546 | -0.0553 | 0.5852 |
Infraspinatus | 9 (2) | - | 13 (0) | - | -0.0439 | 0.6271 | 0.1100 | 0.2599 |
Biceps | 14 (5 1/2) | 2 (3 1/2) | 7 (5) | - | 0.1920 | 0.0303 | 0.3740 | 0.0001 |
Triceps | 37 (3) | 1 (5) | 16 (0) | - | 0.1500 | 0.0918 | 0.1969 | 0.0430 |
Radial flexor of wrist | 18 (4) | 2 (5) | 8 (3) | - | 0.1934 | 0.0297 | 0.2444 | 0.0120 |
Short radial extensor of wrist | 18 (6) | 2 (5) | 13 (3) | - | 0.2597 | 0.0033 | 0.2637 | 0.0067 |
Ulnar extensor of wrist | 26 (5) | 3 (4) | 11 (3) | - | 0.2045 | 0.0204 | 0.2348 | 0.0158 |
Short abductor of thumb | 27 (3) | 1 (5) | 10 (4) | 1 (11) | 0.1475 | 0.0975 | 0.4044 | 0.0000 |
Abductor of small finger | 6 (3) | - | 3 (5) | - | 0.0117 | 0.9020 | 0.2794 | 0.0041 |