Table 1.
First author |
Year | Study design | Intervention | Size | Follow-up duration, months (mean ± SD) | Pre-operative total TWSTRS score (mean ± SD) | Post-operative total TWSTRS score (mean ± SD) | % improvement |
---|---|---|---|---|---|---|---|---|
Munchau | 2001 | Prospective cohort study | SPD | 26 | 16.7±12.6 | 47.0±10.0 | 31.0±13.0 | 34 |
Yianni | 2003 | Retrospective cohort study | DBS | 6 | 18.9 | 57.8±8.2 | 23.0±9.1 | 60 |
Hung | 2007 | Longitudinal cohort study | DBS | 10 | 31.9±20.9 | 53.7±17.2 | 23.2±11.6 | 57 |
Kiss | 2007 | Prospective single-blind study |
DBS | 10 | 12 | 14.7±4.2§ | 8.4±441§ | NR* |
Jeong | 2009 | Consecutive case series | DBS | 6 | 18.7±11.1 | 60.5±3.6 | 15.8±4.3 | 74 |
Moro | 2009 | Crosssectional study | DBS | 8 | 28.6±19.2 | 24.4±4.1§ | 11.1 ±2.6 § | 57§ |
Huh | 2010 | Retrospective cohort study | DBS | 24 | 29.5±18.6 | 25.6±8.9§ | 10.03±4.1§ | 38§ |
Cacciola | 2010 | Consecutive case series | DBS | 10 | 37.6 ±16.9 | 55.7±8.3 | 17.6±13.4 | 68 |
Yamada | 2013 | Retrospective cohort study | DBS | 7 | 63.5 ±38.2 | 21.3±4.9§ | 6.4±5.7§ | NR* |
Schjerling | 2013 | Randomized crossover trial | DBS | 6 | 6 | 23.5±5.3§ | 14.5±9.6§ | NR* |
Sadnicka | 2013 | Case-control study |
DBS | 11 | 26±15 | 50.0±12.2 | 18.0±19.4 | 64 |
Witt | 2013 | Retrospective cohort study | DBS | 28 | 33.7±25.0 | 53.5±10.3 | 24.2±15 | 55 |
Walsh | 2013 | Prospective single-blind cohort |
DBS | 10 | 21.5±4.6 | 54.5±12.4 | 29.0±14.4 | 47 |
Volkmann | 2014 | Randomized sham- controlled trial |
DBS | 32 | 19.9±3.7 | 45.9±9.9 | 27.8±14.5 | 40 |
Ostrem | 2014 | Prospective cohort study | DBS | 7 | 12 | 36.0±9.7 | 31.8±8.8 | 12 |
Chung | 2015 | Retrospective cohort study | SPD | 16 | 19.9±11.5 | 24.9±8.0 | 14.9±3.6 | 40 |
Wang | 2015 | Retrospective cohort study | SPD | 648 | 33.4 | 54.7±18.3 | 31.1±11.6 | 43 |
Ostrem | 2017 | Prospective cohort study | DBS | 16 | 36 | 41.0±18.9 | 18.8±14.8 | 54 |
TWSTRS severity sub-scores
not reported: percentage improvement unable to calculated from study data