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The Daily Insight

Why do my knees cave in when I deadlift?

Author

Rachel Newton

Updated on March 19, 2026

Knee valgus is when the knees cave inwards.

In the deadlift, this can happen in both the concentric (lifting) and eccentric (lowering) portions of the movement. Valgus can vary in terms of severity and can fully shift knees in, or present itself as a light wavering of the knee joint.

Similarly, you may ask, should you lock knees when Deadlifting?

It is never a good idea to lock your knees. The knee joint is strong, but delicate, so the same rule applies when performing a deadlift: do not lock your knees. The deadlift is an effective exercise to strengthen your lower body, so it can be included in your workout routine.

Also, is knee valgus bad? If you continue to fall into knee valgus during such movements, the accumulation of those poor repetitive movements is where injuries can develop. Potential injuries related to knee valgus include ligament damage (particularly of the ACL), ITB syndrome, patellofemoral pain and meniscus damage.

Likewise, people ask, why do knees cave in during squats?

Knees Caving In

This is sometimes called knee valgus, valgus collapse, or some combination of the two. If you have tight or weak hips and glutes—especially your gluteus medius, the glute muscle that abducts the leg—you may notice your knees caving inward during your squat.

What is knee valgus?

A valgus deformity is a condition in which the bone segment distal to a joint is angled outward, that is, angled laterally, away from the body's midline. Common causes of valgus knee (genu valgum or "knock-knee") in adults include arthritis of the knee and traumatic injuries.

Related Question Answers

How do you prevent valgus knees?

IMPROVING HIP STRENGTH AND ACTIVATION

Resistance band squats and hip bridges, and Side Lying Clams are good strengthening and activation exercises to prevent valgus knee collapse, as they operate in a deeper flexed position – where the collapse tends to happen, so are more specific.

How do I stop my knees from caving?

Open and close your legs to work the glutes and hips. Move from side to side and shuffle in a forward and backward direction while keeping tension on the bands around your legs. This helps strengthen the muscles that will allow for your knees to stay outward instead of caving inward.

Can you fix knee valgus?

Strengthening the knee and hip muscles can improve valgus knee and performing a squat with a resistance band can help improve function. Valgus knee can happen when lowering or rising out of the bottom of the squat. Resistance bands are great tools to help correct valgus knees and provide strength to your hip muscles.

Why do my knees cave in when I stand?

What is genu valgum? Genu valgum, known as knock-knees, is a knee misalignment that turns your knees inward. When people with knock-knees stand up with their knees together, there's a gap of 3 inches or more between their ankles. This is because their knees are bent so far inward.

Why do my knees cave in?

Knees caving inward during squatting, also known as KNEE VALGUS, can be due to a variety of issues including mobility, strength imbalances, or poor coordination of movement. Over time this poor tracking of the knee can cause the cartilage to wear down prematurely leading to knee pain and arthritis.

Do deadlifts hurt your knees?

Because of the mechanics of the movement, the deadlift is considered to be a safe exercise for the knee. But everyone is built differently, with different proportions and biomechanics, and it's possible for deadlifts to cause knee pain. If you suffer from chronic or sharp knee pain, be sure to talk to your doctor.

Are squats bad for your knees?

Squats aren't bad for your knees. In fact, when done properly, they are really beneficial for knee health. If you're new to squatting or have previously had an injury, it's always a good idea to have an expert check your technique. To find a university-qualified exercise professional near you, click here.

How long do you have to hold a deadlift?

Once the bar is loaded you have 60-seconds to begin the deadlift (initiate movement on the bar) After the lift, you have 60-seconds to submit the load for the next attempt to the score-table. You must have the proper lifting attire for the day: singlet, t-shirt, shoes, belt, wrist wraps, and knee sleeves.

Should you lock out on deadlifts?

The deadlift, of course, is a hip-dominant exercise, which means the glutes play a huge role in completing the movement. A lot of lifters don't realize that you should lock out with your glutes, not your back.

What is a deadlift lockout?

Anything from the knees up is generally considered “lockout” in the deadlift. But consider that the bar starts eight inches off the floor. That's nearly mid-shin for many guys.

Why do my knees hurt after lifting?

It's caused by overuse in sports, injury, or muscle imbalances. The patella is your kneecap, so people with this condition feel pain around the kneecap when doing things like running, jumping, kneeling, or squatting.

Is sumo deadlift bad for knees?

The sumo deadlift also requires the quadriceps to extend the knees over a greater range of motion. Lifters fail deadlifts because they can't extend their hips while keeping their backs rigid, not because they can't extend their knees.

How do you lock out deadlifts?

Here are my 10 tips to improve your deadlift lockout:
  1. Fix Your Bottom Position.
  2. Fix The Timing Of Your Lockout.
  3. Identify The Muscles Involved.
  4. Take Advantage Of Your Leverages.
  5. Work On Your Grip.
  6. Do Pause Deadlift Combos.
  7. Perform Isometric Contractions.
  8. Do Rack or Block Deadlifts.

Are deadlifts worth it?

Deadlifts are a great exercise, and usually should be part of your routine. It will strengthen many other muscles as well, making it a very effective exercise for whole-body strength. The main downside to deadlifts is that they're particularly exhausting, especially for the lower back muscles.

Are deadlifts bad for you?

Deadlifts Are Safe Unless You Do Them Wrong

The primary concern with deadlifts is performing the exercise with a rounded spine. This results in the stress of the exercise being placed on the spine structures and ligaments rather than to the back, hip, and leg muscles.

Why is deadlift so good?

1. Deadlifts work your entire body. They also rely on core strength to stabilize your body throughout the lift, which means you'll be working your abs on top of everything else. As if you needed more convincing, deadlifts often work your glutes more than squats do.

Why is my deadlift so weak?

There are two main reasons why you are weak off the floor in the deadlift: (1) the muscles responsible for generating force off the floor are underdeveloped, or (2) you lack efficient technique in the start position of the deadlift.

Where should you feel deadlift?

A deadlift is a full-body movement, but if you're doing it right, you should definitely feel it more on your backside, or more specifically, the posterior chain—think hamstrings, glutes, the erector muscles along your spine, and your back muscles.

Should you drop the weight when Deadlifting?

It's perfectly safe to place the bar down, and if you're deadlifting with good form then, as Schmitz says, “80 per cent of the time there's no need to drop the weight”.

How often should I deadlift?

Weekly Deadlift Frequency: 2 to 5 times a week

If your goal is improving on a specific point in the deadlift, then opt for variations that will promote working towards that goal. For example, if you have trouble off the floor, then try tempo deadlifts or paused deadlifts.

How many deadlifts should I do?

Most powerlifters will train with anywhere from 1-8 reps, but when training specifically for strength, the general rep range is 3-5. Bodybuilders and people who want to add muscle to their backs usually stick to doing 8-12 deadlifts and sometimes more.

Should Bar scrape shins on deadlift?

It isn't fun, and it's the reason why many people opt to wear gym pants on deadlift day instead of shorts (in addition to pulling up their socks). However, scraping your shins with the bar is not an example of bad form; on the contrary, it is often a sign that you are doing the movement correctly.

How do I stop my knees from squatting?

Imagine trying to rip a wet paper towel between your feet. If you have a resistance band, place it around your knees and squeeze out against it as you squat. Corkscrewing the floor works similarly to spreading the floor, but it works better if your knees cave in as you stand up from the bottom of the squat.