Table 4.

Systematic review data

Authors	Operation	Drain	Antibiotics	Follow up
Wray and Templeton [13]	n/s	n/s	n/s	5.5 years (1–9 years)
Postacchini and Massobrio [7]	Described	n/s	n/s	In 36 pts in 7.8 years (19 months–16 years)
Bayne et al. [5]	Gardner	n/s	No use	7 years
Eng et al. [14]	Partial coccyx	n/s	n/s	1.5 years
Hellberg and Strange-Vognsen [15]	n/s	No	n/s	15 years (1–16 years)
Wray et al. [4]	n/s	n/s	n/s	n/s
Grosso and van Dam [16]	n/s	No	Yes: no further data	56 months (26–92)
Zayer [17]	n/s	No	n/s	5 years
Maigne et al. [18]	Described	Yes	n/s	12 and 24 months
Perkins et al. [19]	Key	n/s	n/s	43 months (19–74 months)
Ramsey et al. [20]	Key 7 partial 8 total	n/s	1 pre: 1 post op	14 months (6–24)
Doursounian et al. [21]	Key	Yes	2nd generation/48 h	12
Hodges et al. [22]	n/s	n/s	2nd generation/gentamycin/metronidazole	28 (12–70)
Wood and Mehbod [23]	Key	No	2nd generation/48 h	26 months (12–59 months)
Karalezli et al. [24]	Total 11/partial 3	n/s	n/s	30 months (4–48)
Feldbrin et al. [25]	n/s	n/a	n/s	Minimum 12 months
Pennekamp et al. [26]	Sub-periosteal	n/s	1–3 days	7.3 years (2–16)
Balain et al. [27]	n/s	No	n/s	6.75 years (2–16)
Mouhsine et al. [28]	Partial coccyx	No	n/s	2.8 (14 months–6 years)
Capar et al. [29]	Key	n/a	2nd generation and aminoglycoside/72 h	Minimum 9 months
Sehirlioglou et al. [30]	Key	No	2nd generation/48 h	4.1 years (2–8 years)
Cebesoy et al. [31]	n/s	n/s	For 5 days post op	26 months (24–32 months)
Bilgic et al. [12]	Total removal 11 Sub-periost 14	n/a	2nd generation/48 h	20.4 (12–36)
Traub et al. [32]	Described	n/a	1 dose	21.7 months

The table includes information regarding operations performed, the use of drains and antibiotics and their follow up