This study will involve patients previously commercially implanted with Minuteman G5 MIS fusion plate, the Liberty sacroiliac fusion device, and/or the Patriot sacroiliac fusion device. Subjects will undergo a CT scan, if applicable and PROs.

CT imaging is being used to assess fusion in participants with previously implanted devices that were not explanted.

The primary endpoints include the rate of fusion, and the rate of complications or reoperations.

Fusion Scale:1) Radiographically evaluate the rate of fusion, as determined by a panel of independent radiologists per the below fusion assessment metrics: Lumbar fusion grading scale (Minuteman G5): 1- Definitely fused 2- Probably fused 3- Probably not fused 4- Definitely not fused;

Sacroiliac fusion assessment (Liberty, Patriot):

Device(s) will be evaluated for (i) the presence of bridging bone from ilium to sacrum; and (ii) any evidence of migration or loosening

Additionally, if Minuteman G5 subjects have an interbody fusion device, interbody fusion will be assessed using the Bridwell scale:

1- Definite fusion 2- Probable fusion 3- Intermediate fusion/possible motion 4- Pseudoarthrosis/no bony connection

1. Pain (Overall, Back and Leg) using NRS/numeric rating scale Overall pain, as well as back pain when standing/walking and leg pain when standing will be assessed using a numeric rating scale (NRS). The NRS is a pain screening tool, commonly used to assess pain severity at that moment in time using a 0-10 scale, with zero meaning "no pain" and 10 meaning "the worst pain imaginable.