Table 1. Complication categories defined by authors and corresponding frequency of entries.

CSF, Cerebrospinal fluid; ICP, intracranial pressure.

Complication	Total
Infection	128
Incorrect size or brand of implant	100
Clamp, plate, lead break, or assembly issue	21
Wound healing problem, wound dehiscence	18
CSF leak, cerebral edema, epidural fluid collection, or increased ICP	18
Unknown, other	14
Device migration	9
Due to pre-existing patient condition	6
Allergic reaction	5
Focal neurological deficits, seizures, pain	5
Radiation-induced implant malfunction	3
Excessive post-operative bleeding, hematoma	2