Controversies about Interspinous Process Devices in the Treatment of Degenerative Lumbar Spine Diseases: Past, Present, and Future

Table 1

List of the most important interspinous implants available on the market.

(a)

	X-Stop	Coflex	DIAM	Wallis	BacJac	Viking	Ellipse	Aperius
Producer	Medtronic	Paradigm Spine	Medtronic	Zimmer	Pioneer	Sintea	Sintea	Medtronic
Category	Static	Dynamic	Dynamic	Static	Static	Dynamic	Static	Static
Material	Titanium	Titanium	Silicon	Peek	Peek	Paek	Titanium/Paek	Titanium
Approach	Bilateral	Bilateral	Monolateral	Bilateral	Monolateral	Bilateral	Monolateral	Percutaneous
Fixation	Wings	Wings	Ribbons	Ribbons	Clip	Ribbons	Clip	Wings
Preservation supraspinous ligament	Yes	No	Yes	No	Yes	No	Yes	Yes

(b)

Helifix	Aspen	BacFuse	Stabilink	Bridge Point	Posterior Fusion System
Alphatec Spine	Lanx	Pioneer	Southern Spine	Alphatec Spine	Lanx
Static	Static/Fusion	Static/Fusion	Static/Fusion	Expandable/Fusion	Expandable/Fusion
Peek	Titanium	Titanium	Titanium	Titanium	Titanium
Percutaneous	Bilateral	Bilateral	Bilateral	Bilateral	Bilateral
Helical tip	Spikes	Spikes	Spikes	Spikes	Spikes
Yes	Yes	Yes	Yes	Yes	Yes