Finally gave up on quad injections after 8 years, scar tissue made it feel like cement

This is one of the most common things we hear from long-term members. The scar tissue issue with quads is real and it compounds over years. Delts and upper glutes are genuinely more forgiving sites for sustained long-term use. Good thread to have documented here for anyone doing a search on injection site rotation.

Made the same switch about 3 years ago. Quads were fine for the first 5 or 6 years then gradually felt worse every cycle until pushing the plunger was genuinely an effort. Moved entirely to delts and glutes and haven't looked back.

One thing worth adding for anyone making the switch - rear delt takes about 3-4 pins to feel comfortable. First couple of times it feels awkward reaching back there and you're second-guessing your placement. After a month it becomes the easiest site you've got. 1 inch 23g, slow push, done in under a minute. The quad calluses stay around for a while but the actual discomfort goes pretty quickly once you stop using them.

Quads are a young man's game. Switched to glutes and delts years ago and never looked back.

Made the switch about 3 years ago and haven't looked back. Rear delt is my go-to now - 1 inch 23g, rotate left and right, zero issues. The first few sessions felt awkward trying to reach the spot but after a week it's second nature. Quads just aren't worth it once you've got scar tissue building up, the resistance alone tells you it's time to stop.

What gets me is how gradual the buildup is - you don't notice it until one session the quad just fights back and you're sitting there wondering if you pinned wrong. Switched to rear delts about 4 years ago and haven't looked back. The 1 inch 23g works fine for everything except guys with more tissue sitting over the delt, then you need the 1.5 inch or you're hitting sub-q half the time and wondering why the compound isn't absorbing right.

Same thing happened to me around year 6, right quad started feeling like there was a wall halfway through the plunger. Switched to mid delt and rear delt exclusively and honestly the whole process is easier now. 1 inch 23g for the delt, sometimes 1.5 inch for the rear delt depending on what I'm running - no more of that grinding resistance you get from a scarred site. Never going back. The only thing I miss about quads is nothing.

Quad abandonment at some point is almost universal for long-term users. The resistance issue is well documented and it does not improve with time - once the scar tissue builds up it stays. Mid and rear delts are significantly more comfortable for most people and the volume capacity is adequate for standard weekly doses. Good discussion in here.

Made the switch to rear delts about 3 years ago and the only regret is not doing it earlier. 1 inch 23g handles most compounds fine, only go to 1.5 if the shoulder is carrying more tissue. The first few sessions feel awkward with the angle but it normalises fast. Quads now only for emergencies and honestly I'm not sure what that emergency would be.

I personally rotate between:
-glutes
-delts
-quads (Low and high)

Low quads do hold up a bit better than the standard mid-sweep placement, there is less direct buildup in that outer area. High quad is a different angle but the tissue is thinner there and you feel it quicker when scar tissue starts forming. I gave up quads entirely about 3 years ago and haven't missed them. Delts a few times a week, glutes the rest, no dramas since.

Quads are the first to go. Once the scar tissue builds up there's no recovering the site. Delts and glutes are where long-term guys end up for a reason.

Made the full switch to rear delts and glutes about 3 years ago and never looked back. Quads just got to the point where even placing the pin right you'd hit resistance halfway through the plunger. Shorter needles in the delt took a session or two to get comfortable with but now it's the easiest injection I do. 1 inch 23g works fine if you're reasonably lean. Anyone still using quads as their main site after 10+ years of regular pinning is either very lucky or hasn't noticed how much harder it's getting.