Table 1.

Radiographic fusion assessment.

Solid Fusion	Presence of solid continuous bridging across the treated joint
Possible Fusion	Presence of possible continuous bridging across the treated joint
No Fusion	No bridging bone
Ind - Indeterminate	A reliable determination cannot be made from the available imaging due to technical factors, sub-optimal image quality, obscured anatomy, obstructed view or other imaging artifacts.
UA - Unable to assess	The relevant images are missing or unavailable for review, or the relevant anatomy is not visible in the field of view.