Table 4.

SIR score evaluation after surgery

SIR	Pre-operative Med(IQR)	One year after surgery Med(IQR)	Two years after surgery Med(IQR)
Group I	1(0–1)	2(2–3)	3(2.5-4)
Group II	2(1–2)	3.5(2–4)	4(2.88–4.25)
Total	1(0–1)	2.25(2–3)	3(2.5-4)

*Group I: full electrode insertion, Group II: Partial electrode insertion