There's a version of the deadlift that does everything hard well and then skips the easy part. The bar breaks the floor cleanly, rides a straight line up the legs, the back holds its shape — and then, an inch from done, the rep just... ends. Knees a few degrees shy of straight. Hips hovering a touch behind the shoulders. The lowering starts before the lifter ever actually stands up.
That's the soft lockout, and it's sneaky because it doesn't feel like anything is missing. The heavy part is over; surely the rep is too? But the top of a deadlift is a position, not a region you pass near. Finished means: hips through, knees straight, shoulders stacked over hips, ribs down — standing tall and plumb, the way you'd stand if nothing had happened. Anything short of that is a rep that ends in the gray zone, and gray-zone reps train a gray-zone pattern.
Why the inch goes missing
Usually it's not weakness — a lifter who can move the bar to 95% of lockout has the strength for the last 5%. What's missing is an address. The lifter doesn't know where "finished" lives, so they aim at "roughly up" and accept whatever arrives. The glutes — whose entire job is that final hip drive — never get the memo, and the rep dissolves instead of ending.
The fix, then, isn't more pulling strength. It's teaching the finish as a specific place your body can find every time: squeeze the glutes, push the hips forward to the bar, stand tall — not tilted back, tall. (Leaning back past vertical is the same confusion in the other costume: still a lifter who doesn't know where finished lives, just overshooting instead of undershooting.)
The drill — Tall-Finish Holds
Take a light bar — this is a positioning drill, not a strength test. Pull a rep, and at the top, hold for five full seconds: hips through, glutes squeezed hard, ribs down, standing plumb. No lean-back. Someone walking by should think you're just standing there holding a bar, because that's exactly what a finished deadlift is.
Do 5 holds of 5 seconds at the end of your pulling sessions. Five seconds is long enough that you can't fake it — a hips-behind, knees-bent almost-lockout gets uncomfortable and obvious around second three, which is precisely the feedback you want. Within a couple of weeks, the top stops being a place you pass through and becomes a position you own. Then it starts showing up at working weight without being asked.
The self-diagnosis is tough here, by the way — from the inside, 172 degrees of knee and 180 feel identical. From the side on video, the difference is plain: does the final frame show a person standing tall, or a person mid-crouch starting back down? That end-of-rep frame is one of the things CoachVision's AI coach reads from a side-on phone clip, alongside your hinge and bar path — its measured read on whether your finish arrives or goes missing, told to you straight. Five tall holds per session this week, then film a working set and check the top frame. The missing inch is the cheapest strength you'll ever gain.