Table 4. Comparison between studies using bone grafts after corrective osteotomy and plate fixation and studies without using bone grafts.

Author	Year of publication	Number of patients	Study design	Type of bone grafting	% Delayed union	% Nonunion	Occurrence of dislocation
Gradl22	2013	18	RCS	ICBG and RD	5.6	0	None
Henry23	2007	19	RCS	ICBG	0	10.5	None
Horas24	2001	31	RCS	ICBG	0	0	None
Jupiter26	1996	20	RCS	ICBG	5.0	0	None
Kiliç27	2011	17	PCS	ICBG	0	0	None
Lozano-Calderón28	2010	22	RCS	ICBG	0	0	None
Prommersberger31	2001	20	RCS	ICBG	0	5.0	1
Ring34	2002	20	RCS	ICBGa	0	0	None
Sato35	2009	28	RCS	ICBG	0	0	None
Shea37	1997	25	RCS	ICBG	0	4.0	None
von Campe38	2006	15	RCS	ICBG	0	0	None
Wada39	2011	21	RCS	ICBG and TPBS	9.5	0	None
Wieland40	2005	47	RCS	—	0	0	None
Ozer42	2011	14	RCS	—b	0	0	None
Mahmoud41	2012	22	PCS	—	0	0	None
Tiren43	2014	11	RCS	—	0	0	None

Overview of studies that used bone grafts after open wedge osteotomy and plate fixation. All studies included 15 or more patients. In addition, these table also summarizes the four studies in which bone grafting was not performed after corrective osteotomy and plate fixation.

Abbreviations: ICBG, autogenous cancellous iliac crest bone graft; PCS, prospective cohort study; RCS, retrospective cohort study; RD, autogenous cancellous bone graft from the radius; TPBS, tricalcium phosphate bone substitute.

^aRing et al used structural trapezoidal bone graft from the iliac crest and nonstructural cancellous bone from the iliac crest.

^bIn the study of Ozer et al, 14 patients received allograft bone chips and in the other 14 patients no bone grafts were used after corrective osteotomy and plate fixation.