Complications in growth-friendly spinal surgeries for early-onset scoliosis: Literature review

Table 5 The number of planned and unplanned surgical procedures in guided growth group – the Shilla and growth guidance system groups

Ref.	Subject	Surgical procedures (n)	Planned surgical procedures (n)	Unplanned surgical procedure		% unplanned surgeries to all surgeries	% unplanned surgeries to patients with at least one complication	Ratio of planned to unplanned surgery
				n	%
Haapala et al[12], 2020	13	19	17	2	15.4	10.5	40.0	8.5
Andras et al[13], 2015	36	101	36	65	180.6	64.4	224.1	0.55
Nazareth et al[44], 2020	20	41	20	21	105	51.2	140.0	0.95
Miękisiak et al[45], 2019	57	82	57	25	43.92	30.52		2.28
McCarthy et al[46], 2014	10	15	10	5	50	33.3	100.0	2
Luhmann et al[14], 2017	18	56	36	20	111.1			1.8
McCarthy et al[47], 2015	40	109	58	51	127.5			1.14

²The values of the % of unplanned surgeries in which all four complications were analyzed in the paper.