From: Polymethylmethacrylate-assisted ventral discectomy: Rate of pseudarthrosis and clinical outcome with a minimum follow-up of 5 years
ASD
no ASD
Age (years)
Time interval (months)
Group A (n = 17)
9 (52.9%)
8 (47.1%)
54.4 ± 8.2
80.8 ± 34.9
Group B (n = 33)
26 (78.8%)
7 (21.2%)
59.8 ± 9.5
109.6 ± 43.5
p-value
0.06
0.027
0.034