Past Glute Injections Linked to Back Pain?

It’s been 3 years since I’ve injected a steroid into my glutes. I remember back when I did, I would get very profound tightness in whatever glute I shot into, and a subsequent stiffness in my lower back just above the injection area. today, 3 years later I feel as if there’s scar tissue in my glutes, that’s resulted in a stiff feeling that affects the area around my sacral-illiac joint. Constant stretching of my lower back, glutes and I.T. band has caused this sensation to almost disappear with only occasional recurrances.