Table 1 Basic characteristics of the included studies
ID | Location | Design | Enrollment years | No. with T2 ISI | Classification of T2 ISI | Follow-up time (month) | Diagnosis | Segments | Surgical approach | No. using approach |
|---|---|---|---|---|---|---|---|---|---|---|
Gu et al. [10] | China | Prospective nonrandomized controlled | 2010–2012 | 140 | NM | 27 (12–360) | OPLL | 2–6 | A: ACCF | 27 |
P: Laminectomy, Laminoplasty | 113 | |||||||||
Sun et al. [11] | China | Prospective randomized controlled | 2005–2008 | 31 | NM | 20.3 (12–34) | OPLL | NM | A (NM) | 15 |
P: Laminoplasty | 16 | |||||||||
Liu et al. [12] | China | Prospective nonrandomized controlled | 2002–2006 | 17 | NM | 81.6 (60–120) | OPLL | NM | A: ACCF | 7 |
P: Laminoplasty | 10 | |||||||||
Wang [13] | China | Prospective nonrandomized controlled | 2000–2007 | 49 | Qualitative | 13.8 (12–60) | CSM | NM | A:ACCF | 29 |
P: Laminoplasty | 20 | |||||||||
Yang et al. [14] | China | Prospective nonrandomized controlled | 2010–2014 | 202 | NM | 36 (28–40) | OPLL | ≥ 2 | A:ACCF, ACDF, HDF | 121 |
P: Laminoplasty | 81 | |||||||||
Salem et al. [15] | The UK | Prospective nonrandomized controlled | 2006–2010 | 66 | NM | 37 (17–88) | CSM | NM | A:ACCF, ACDF, ACDR | 24 |
P: Laminoplasty | 42 | |||||||||
Suri et al. [16] | India | Prospective nonrandomized controlled | 1999–2001 | 121 | NM | 12–24 | CSM | ≥ 1 | A: ACCF, ACDF | NM |
P: Laminectomy, Laminoplasty | ||||||||||
Tauchi et al. [17] | Japan | Retrospective | 1991–2010 | 21 | NM | 32.4 (12–153) | CSM | NM | A:ACCF, ACDF, HDF | NM |
P: Laminectomy, Laminoplasty | ||||||||||
Uchida et al. [18] | Japan | Retrospective | 1988–2001 | 101 | Qualitative | 99.6 (12–154) | CSM, OPLL | ≥ 1 | A: ACCF, ACDF | NM |
P: Laminoplasty |