Table 2.

Summary of the results described in the literature on lateral opening wedge DFVO

Author	Year	Number	Median Age (range)	Median F-UP	Type of Fixation	Results
Puddu [18••]	2010	21	54 years	4–14 years	Puddu® plate	Improving in both International Knee Committe Documentation Committee (IKDC) rating scale and the HSS system at 4–14 years of follow-up.
Jacobi [46]	2010	14	46 years (28–63)	45 months	Tomofix® plate	50 % of osteotomies healed at 3 months, 14 % at 6 months and the other at 9 months. 86 % required plate removal. Mean satisfaction index was 78 %.
Zarrouk [20••]	2010	22	53 years (27–66)	54 months	95 ° blade plate	80 % had good or excellent results, 9.5 % had fair results, and 9.5 % had poor results. The 8-year survival rate was 91 % (confidence interval, 69—100 %).
Thein [4]	2012	6	46.7 years	6.5 years	Puddu® plate	The mean Oxford Knee Score improved from 13.1 ± 8.6 to 26 ± 12.5. The average subjective satisfaction rate at the last follow-up was 6.6 ± 2.8 points. conversion to TKA at the final follow-up
Dewilde [44]	2012	19	Not reported	68 months	Puddu® plate	The average knee score improved significantly from 43 ± 8 preoperatively to 78 ± 23 at final follow-up. The Kellgren–Lawrence osteoarthritis score remained unchanged. Kaplan–Meier analysis using revision surgery or conversion to TKA as an endpoint demonstrated an 82 % successful survivorship at 7 years of follow-up.
Saithna [47•]	2014	22	41 years (28–58)	4.5 years	Puddu® plate and Tomofix® plate	4 patients underwent TKA. The cumulative survival rate of 79 % at 5 years, with a significant improvement in all the outcomes evaluated.

Note. F-UP, follow-up; TKA, total knee arthroplasty; CI, confidential interval