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Table 1 Characteristics of included studies

From: Is PEEK cage better than titanium cage in anterior cervical discectomy and fusion surgery? A meta-analysis

study group Gender (M/F) Age(Y) Segments (one/two/three) Diseases(T/P) Cage information Follow-up(m)
Chou YC et al. 2008 [12] TTN 11/16 55.2 43(14/10/3) Trauma(1/2) spondylosis(10/0) OPLL(1/0) HIVD(15/7) Non-threaded cage containing a biphasic calcium phosphate ceramic 12
PEEK 6/3 54.2 15(3/6/0) containing a biphasic calcium phosphate ceramic 12
Niu CC et al. 2010 [19] TTN 15/13 49.5 ± 11.3 37(19/9/0) Radiculopathy(21/9) Myelopathy(3/3) Radiculomyelopathy(4/3) hydroxyapatite-coated, box-shaped device with a tooth-threaded surface filled with a local bone graft and a calcium phosphate bone substitute 31.9 ± 3.4
PEEK 12/13 52.2 ± 10.5 34(16/9/0) filled with allo-cancellous bone graft 30.4 ± 3.3
Cabraja M et al. 2012 [20] TTN 26/18 51.1 ± 8.9 44(1/0/0) Radiculopathy(36/34) Myelopathy(8/8) with Plasmapore coating 30.6 ± 14.3
PEEK 28/14 57.6 ± 11.1 42(1/0/0) N 26.1 ± 10.0
Chen Y et al. 2013 [22] TTN 17/12 45.7 ± 7.2 87(0/0/3) Radiculopathy(16/18) Myelopathy(1/1) Radiculomyelopathy(12/12) N 97.2
PEEK 16/15 47.2 ± 6.8 93(0/0/3) N 102.1
  1. Notes: TTN, Titanium, PEEK polyetheretherketone, OPLL ossification of the posterior longitudinal ligament, HIVD herniated intervertebral disc, N non-mentioned