Deadlifts are one of the most effective exercises in existence for building full-body strength, and for years I loaded up the barbell with genuine enthusiasm. My form looked decent enough in the mirror. My numbers were climbing. And yet, every few months, I’d find myself hobbling around with a nagging ache in my lower back that I kept dismissing as “part of the process.” It wasn’t until a physiotherapist watched me lift and said, quietly but firmly, “there’s your problem,” that everything changed.
Key takeaways
- A tiny change in how you finish your deadlift lockout might be the reason your lower back aches every few months
- Most lifters misinterpret a simple cue and end up compressing their spine in ways their body quietly resists
- The fix doesn’t require new equipment—just relearning one phase of the lift, and the results come faster than you’d expect
The mistake hiding in plain sight
The error wasn’t dramatic. There was no rounding of the upper back, no knees caving inward. The problem was something far subtler and, as it turns out, extraordinarily common: I was hyperextending my lumbar spine at the top of the lift. Every single rep, as I locked out, I was driving my hips through so aggressively that my lower back arched sharply backward, compressing the posterior elements of my spine under load. Multiply that by thousands of reps over several years, and you have a fairly reliable recipe for cumulative tissue stress.
The physio explained it in terms I found hard to argue with. The lumbar spine in a deadlift lockout should reach a neutral position, not a military-parade extension. The glutes finish the movement; the lower back is simply a stable conduit, not the grand finale. What I’d been doing, she said, was essentially “buttwinking in reverse”, a term that made me laugh but described something genuinely problematic. Anterior pelvic tilt at lockout isn’t just unnecessary. Under heavy load, it shifts compressive forces onto the facet joints and posterior disc margins in ways that, over time, the body resists quite loudly.
Why so many people make this exact error
The frustrating part is that the cue most of us are given is technically correct but easy to misapply. “Drive your hips forward” or “squeeze your glutes at the top” are standard deadlift instructions, and they work beautifully when understood with nuance. The problem is that a lot of lifters, myself very much included, interpret “hips forward” as “lower back backward.” The hip hinge becomes a lumbar extension, and because the weight feels heavy and the lift feels powerful, the brain registers it as success.
There’s also a mirror problem. The top of a deadlift lockout is hard to see from a standard gym mirror angle. You’re facing forward, the camera is usually in front of you, and the hyperextension happens behind your field of vision. Many people genuinely have no idea it’s occurring until someone watches from the side. A short video of yourself lifting, viewed from a lateral angle, can be a fairly confronting experience.
Research into lower back pain in recreational lifters consistently points to load management and movement pattern errors as the two dominant contributing factors, which makes sense when you consider that the deadlift recruits the erector spinae, multifidus, and quadratus lumborum simultaneously under significant spinal load. Any deviation from neutral that becomes habitual over time asks those structures to manage force in ways they weren’t designed to sustain indefinitely.
What the correction actually feels like
The fix my physio gave me was deceptively simple, though it took weeks to feel natural. She asked me to think of the lockout as “tall” rather than “back.” Stand tall at the top, ribs stacked over pelvis, glutes firmly contracted but Without the pelvis tipping forward. She also introduced a cue I’d never heard before: imagine there’s a wall directly behind you, and at the top of the lift, your lower back shouldn’t touch it. Your glutes should. That single image, once it clicked, reorganised my entire lockout.
She also suggested temporarily reducing the load by about 20 percent and rebuilding the pattern from scratch. This is the part most lifters resist, understandably. Dropping weight feels like regression. But the nervous system needs sufficient repetitions of the correct pattern before it becomes automatic under heavier loads, and trying to retrain a movement while also fighting against maximum effort is a losing battle. The weeks at lighter weights were, genuinely, some of the most productive training I’d done.
Alongside the technical correction, she prescribed some targeted work for the deep stabilisers, not crunches or sit-ups, but positions designed to teach the core to brace isometrically while the hips move freely. McGill-inspired exercises (named after decades of peer-reviewed spinal biomechanics research rather than any single guru’s opinion) became a regular part of my warm-up. Within about six weeks, the intermittent lower back ache had largely resolved.
What this means for your own lifting
If you deadlift regularly and experience lower back discomfort that you’ve been chalking up to “just how it feels,” it may be worth asking someone knowledgeable to watch you lift from the side, or recording yourself with your phone on a low tripod. Pay particular attention to what happens in those final few centimetres of the lockout, that’s where the pattern tends to break down.
A session or two with a qualified physiotherapist or sports-specialist coach isn’t a concession to weakness; it’s exactly the kind of targeted feedback that can protect years of future training. The NHS also offers musculoskeletal physiotherapy referrals through your GP, so if lower back pain has become persistent, that’s a sensible route to explore. (As always, consult your GP for any ongoing pain rather than self-diagnosing based on articles, however well-intentioned.)
The deadlift, done well, remains one of the most transferable strength movements you can build into your life. The question worth sitting with is whether “well” is how you’ve actually been doing it, or whether, like me, you’ve been working hard at something that was quietly working against you.