Table 2.
Details of the muscles injected and the doses of botulinum toxin in idiopathic cervical dystonia patients with (DHT+) and without (DHT–) dystonic head tremor.
| Name of the muscle | DHT+ group (n = 169) | DHT– group (n = 124) | p value |
|---|---|---|---|
| Sternocleidomastoid unilateral | 110 (65.0%) | 87 (70.1%) | 0.36 |
| Sternocleidomastoid bilateral | 31 (18.3%) | 06 (04.8%) | 0.0005 |
| Splenius capitis unilateral | 76 (44.9%) | 66 (53.2%) | 0.16 |
| Splenius capitis bilateral | 78 (46.1%) | 25 (20.1%) | 0.00001 |
| Trapezius unilateral | 62 (36.6%) | 68 (54.8%) | 0.056 |
| Trapezius bilateral | 28 (16.5%) | 09 (07.2%) | 0.01 |
| Levator scapulae unilateral | 61 (36.0%) | 54 (43.5%) | 0.19 |
| Levator scapulae bilateral | 13 (07.6%) | 13 (10.4%) | 0.40 |
| Semispinalis capitis unilateral | 60 (35.5%) | 37 (29.8%) | 0.30 |
| Semispinalis capitis bilateral | 06 (03.5%) | 10 (08.0%) | 0.09 |
| Obliquus capitis inferior unilateral | 45 (26.6%) | 41 (33.0%) | 0.23 |
| Obliquus capitis inferior bilateral | 15 (08.8%) | 02 (01.6%) | 0.008 |
| Semispinalis cervicis unilateral | 27 (15.9%) | 26 (20.9%) | 0.27 |
| Semispinalis cervicis bilateral | 07 (04.1%) | 05 (04.0%) | 0.96 |
| Longus colli unilateral | 24 (46.1%) | 23 (18.5%) | 0.31 |
| Long colli bilateral | 02 (01.1%) | 0 | – |
| Scalenus medius unilateral | 12 (07.1%) | 12 (09.6%) | 0.42 |
| Scalenus medius bilateral | 04 (02.3%) | 06 (04.8%) | 0.24 |
| Splenius cervicis unilateral | 10 (05.9%) | 10 (08.0%) | 0.47 |
| Splenius cervicis bilateral | 0 | 0 | – |
| Total | 855 | 576 | 0.51 |
| Total dosages of botulinum toxin | |||
| OnabotulinumtoxinA [Mean ± standard deviation (SD), Range] | 99 (162.5 ± 68.5, 30–300) units |
53 (156.0 ± 49.3, 50–240) units |
0.54 |
| IncobotulinumtoxinA (Mean ± SD, Range) |
26 (175.6 ± 123.5, 50–590) units |
21 (155.8 ± 63.5, 48–270) units |
0.50 |
| AbobotulinumtoxinA (Mean ± SD, Range) |
44 (640.2 ± 216.0, 102.5–1020) units |
50 (654.5 ± 358.4, 170–1520) units |
0.81 |