Table 1.

The demographic and surgical characteristics of the patients

Characteristic	Mean ± SD or number (%)
Age at the time of study (years)	20.5 ± 6.8
Age at the time of surgery (years)	14.4 ± 5.1
Post-operative follow-up (years)	5.6 ± 3.2
Gender
• Male	7 (15)
• Female	35 (85)
Distal fusion level
• L1	1 (2)
• L2	11 (25)
• L3	14 (33)
• L4	15 (35)
• L12	2 (5)
Fusion device
• Screw	27 (63)
• Hook	15 (27)