Table 6. Mini-Open Surgical Approaches and Decompression and Fixation details.

Surgical approach (first level), n (%)	Number of patients n = 252 (%)
Unilateral approach:	156 (61.9)
No decompression	46 (18.3)
Unilateral decompression	92 (36.5)
Bilateral decompression (over the top)	18 (7.1)
Bilateral approach:	96 (38.1)
No decompression	13 (5.2)
Unilateral decompression	62 (24.6)
Bilateral decompression:	21 (8.3)
Over the top	5 (2)
From both sides	16 (6.3)
Posterior Fixation Techniques, n (%):
Bilateral, percutaneous	123 (48.8)
Bilateral, mini-open	100 (39.7)
One side mini-open + one side percutaneous	24 (9.5)
Unilateral percutaneous	4 (1.6)
Unilateral mini-open	1 (0.4)