Originally Posted by acecow
Originally Posted by Holdfast
You have the same issue I get with most RTW trousers, where those diagonal creases appear around the back of the thigh, and again where the knee locks. I think it comes from a posture where the pelvis is relatively forward compared to the vertical through the body. My posture is more exaggerated (read: worse) than yours though. Ah well, I blame it on a combination of genetics and too much time hunched over a monitor...
I have this issue with all my trousers. It's likely due to my rather meaty behind, but it could also be the posture. However, my posture is pretty straight, at least I like to think so; if it is the cause, then the "problem" is the cut of the trousers. Maybe our posture is too good for RTW?
Originally Posted by acecow
Originally Posted by mrjester
Went to the tailor the other day. He agreed on posterior pelvic tilt. And a flat ass. If you have either, you get the creases. The flat rear screws with the rear rise and the pelvic tilt messes with the waistband, where it's designed to sit v where it sits.
Currently have the above trousers at someone considered the best tailor in Phoenix. If he does well, he gets the other 9 trousers I have. It's not cheap to fix either. Lowering the waistband, adjusting the rise, and some other stuff. It sucks.
I'm quite curious about this fit issue. I refuse to believe it's due to a flat butt, because mine is the opposite of flat. It may be a whole different reason altogether. If you find out, do let me know. It's not a big deal, but if there is a simple fix, I'd like to know about it.
I looked at the pictures, and yours is definitely more pronounced in the case of those gray trousers. Mine is quite minor and I can live with it.
I's definitely due to our postures. I'm no tailor, but I can tell you what's "wrong" musculoskeletally/biomechanically, and it's logical that this would create the fit issues shown.
An orthopod (or an OT or physio) will correct me on the details; I'm relying on my memory of med school for the details below:
Imagine standing sideways and drawing a vertical line down through ears, shoulders, hips, knees and feet (there are specific anatomical reference points within these elements, but I can't remember them). You could actually do this on your side-photo upthread with some simple editing software. In ideal posture, all these elements will fall down the vertical line. In our postures, the pelvis is tilted, pushing hips forward relative to the vertical line, and creating a relatively large curvature in the lower spine, enlarging the hollow in our backs. I bet you often find jackets "kick" in there, even when fitting well from the front, and I also bet that even slim-fit RTW shirts will tend to have excess material at the back while fitting well from the front.
There are other compensatory changes e.g shoulder will be hunched forward and head pushes forward too (think about the effects of that on your jacket fit, and why certain brands will work better than others with that shape, and what alterations you tend to need). The reasons for these musculoskeletal changes are individual, but IIRC common reasons is either a predisposition to a lumbar lordosis or relatively weak hip extensors and erector spinae muscles. I know that my posture got a bit better after getting into the habit of doing some daily stretching exercises, for example. Not a night & day difference, but enough to be noticeable. But then again, my posture is worse that yours so I notice the improvement more too.
Somehow tailors can work around these problems, both with jackets and trousers, hiding the deviations from view, or at least minimising them. RTW items can't do this, without major alterations (personally, I don't think it's worth it). Even MTM trousers are a major improvement on most RTW in this regard though, which leads me to think it's probably done by playing with the relative front & rear rises somehow. But on that, I'm just guessing.