Why Deadlifts Get People Hurt (And How to Make Sure You’re Not One of Them)
The deadlift has a reputation problem. Mention it in the wrong crowd and someone will tell you about a friend who "blew their back out" doing one, or that their physio told them to avoid it forever. That reputation isn't entirely unfair — the deadlift does appear in a lot of injury stories. But so does going for a walk. The question worth asking isn't whether the lift is risky — it's how injuries actually happen, and what that tells us about avoiding them.
There Are No Bad Exercises
This is worth saying plainly: there is no movement that is inherently dangerous. Research in load management — particularly the work of sports scientist Tim Gabbett — has consistently shown that it isn't the exercise itself that causes injury, it's the mismatch between what you're asking your body to do and what your body is currently prepared to handle.1 Gabbett's work on acute-to-chronic workload ratios demonstrated that athletes who spike their training load suddenly — doing too much too soon — face dramatically higher injury rates than those who build progressively. The same principle applies in the gym. A deadlift that would injure a sedentary beginner is often the exact same lift a competitive powerlifter performs hundreds of times a year without issue. The difference isn't the movement — it's the preparation.
Why People Get Hurt
With that framing in mind, most deadlift injuries follow predictable patterns.
The most common is load outpacing technique. Someone learns the movement at a manageable weight, progresses quickly, and the mechanics that worked early on start to break down under heavier loads. The hips and glutes — the primary movers in a properly executed deadlift — get bypassed, and the lumbar spine ends up absorbing forces it wasn't designed to handle in isolation. Biomechanical analyses of the deadlift have identified that bar position relative to the body's centre of mass is one of the most significant factors in lumbar loading; when the bar drifts forward, the mechanical demand on the lower back increases substantially.2
Fatigue compounds the problem. A technically sound lift in the first set can look very different by the fourth. The deep stabilizing muscles of the trunk — including the multifidus and transversus abdominis — fatigue under repeated loading and become less effective at maintaining spinal stiffness.3 McGill's foundational work on spine stability established that muscular co-contraction plays a central role in protecting spinal structures under load, and that this protection diminishes when those muscles are fatigued.3
Finally, there's the warm-up. Connective tissue — intervertebral discs, tendons, ligaments — responds well to progressive mechanical loading but poorly to sudden demand. Skipping preparation and going straight to heavy working sets doesn't allow these structures time to adapt.
What Actually Matters for Form
There's considerable noise in coaching cues, and not all of it is equally important. A few things are well-supported by the research:
The hip hinge. The deadlift is a hinge, not a squat. The hips should act as the primary pivot — driving back during the descent, driving forward on the pull. When people squat their deadlifts, they tend to shift load onto the lumbar spine early in the range of motion, which is the least mechanically advantageous position for the lower back.
Bar proximity. Research comparing conventional and sumo deadlift styles has consistently found that keeping the bar close to the body — ideally in contact with the legs throughout the pull — reduces the moment arm at the lumbar spine and lowers shear force.2 This one adjustment makes a meaningful difference.
Intra-abdominal pressure. Bracing the trunk and creating intra-abdominal pressure before initiating the pull is one of the most well-supported protective strategies in lifting biomechanics. It increases trunk stiffness and distributes load more evenly across spinal structures.3
Progressive overload. Perhaps the most underrated technique cue is simply adding weight at a rate your body can adapt to. Gabbett's research suggests that athletes who increase training load by no more than 10% per week sustain significantly fewer injuries than those who jump loads quickly.1
When Modification Makes Sense
If there's pain during a deadlift — specifically sharp, localized, or lingering pain — that's a signal worth investigating rather than training through. For people managing existing back conditions, the conventional deadlift may not be the right starting point, but that doesn't mean the movement pattern is off the table. Romanian deadlifts, trap bar variations, and single-leg hinges each place different demands on the spine and can be useful entry points while working through a limitation.
The Bigger Picture
The deadlift, approached thoughtfully, is one of the better things you can do for your posterior chain — the muscles that support the spine, transfer force from the lower body, and keep you functional across decades of movement. The research on progressive resistance training consistently supports its role in building the musculature that protects the spine, which matters for everyone, not just athletes.4 The goal isn't to find a "safe" alternative to challenging movement. It's to understand the principles well enough to progress without getting in your own way.
If you've had a previous injury and aren't sure where to start, a movement assessment can help identify what's actually going on and what loading patterns make sense for where you are right now.
References
1. Gabbett TJ. The training-injury prevention paradox: should athletes be training smarter and harder? British Journal of Sports Medicine. 2016;50(5):273–280.
2. Escamilla RF, Francisco AC, Fleisig GS, et al. A three-dimensional biomechanical analysis of sumo and conventional style deadlifts. Medicine & Science in Sports & Exercise. 2000;32(7):1265–1275.
3. McGill SM. Low back stability: from formal description to issues for performance and rehabilitation. Exercise and Sport Sciences Reviews. 2001;29(1):26–31.
4. Westcott WL. Resistance training is medicine: effects of strength training on health. Current Sports Medicine Reports. 2012;11(4):209–216.