Table 4. Adverse events in total population over twelve months .

* Parentheses indicate a serious adverse event.

MedDRA code low level terms	Count of MAST™ related	Count of total related to device, surgery, or MAST™ (serious event)
Acute allergic reaction	0	1 (1)*
Back pain	0	7(1)*
Confusion postoperative	0	1 (1)*
Dural tear	0	4
Fever	0	2
Hypoesthesia	0	3
Implant site seroma	0	2
Implant site abcess	0	1
Leg pain	3 (1)*	10 (3)*
Lumbar disc herniation	0	1 (1)*
Lumbar radiculopathy	0	3
Nausea	0	4
Sacro-iliac pain	0	4
Spinal hematoma	0	1 (1)*
Urinary tract infection	0	3
Urosepsis	0	1 (1)*
Vertigo	0	1
Vomiting	0	1
Total	3(1)	50 (9)