Hip Weakness and Knee Pain: How Outer Hip Strength Fixes Your Squat

You go to fix your knee pain and a friend tells you: "Your knees aren't the problem. It's your hips."

Your first reaction? Skepticism.

Your knees hurt. Your knee is the problem. That's why you're asking for advice.

But here's what I've learned working with hundreds of people over 40 with knee pain: Your weak hips are probably the reason your knees hurt in the first place.

This isn't an opinion. It's biomechanics.

Let me explain what's happening and why strengthening your outer hip muscles might be the single most important thing you do for your knee pain.

THE HIP-KNEE CONNECTION

(And Why Your Doctor Might Have Missed It)

Your knee is attached to your hip above it. When your hip isn't strong, your knee has to work twice as hard to stabilize itself.

Specifically, we're talking about your outer hip muscles—the ones on the side of your hip, near your glute. These muscles are called your glute medius and glute minimus. They're small, but they're mighty important.

Here's what they do: They keep your thighbone from rotating inward when you squat, step down, or carry weight.

When these muscles are weak, your thighbone rotates inward. Your shinbone (tibia) doesn't track properly. And your knee—which sits between these two bones—gets squeezed and stressed from the pressure of poor alignment.

That's where your pain comes from.

Think of it like this: Imagine you're holding a stick between your hands. If your hands are close together and lined up (good alignment), the stick is stable. If one hand drops lower or turns inward, the stick twists and bends. That pressure at the center? That's what happens to your knee when your hip muscles aren't doing their job.

The problem is this: Most people with weak outer hips don't feel hip pain. They feel knee pain. So they fix their knee (or try to), but they never address the weak hip—and the pain comes back.

HOW TO KNOW IF HIP WEAKNESS IS YOUR ISSUE

Before you jump into exercises, let's figure out if weak outer hips are actually contributing to your knee pain.

Ask yourself these questions:

Do you have a hard time standing on one leg? Especially on one particular leg? That's a sign your hip stability is compromised.

When you squat down, do your knees cave inward? Like they're trying to touch each other? That's classic weak outer hip. Your glute medius is supposed to prevent that inward collapse.

Do you feel tired in your hip when you walk upstairs or pick something heavy off the ground? Not hip pain, but fatigue or weakness? That's your outer hip muscles working overtime because they're not strong enough for the task.

Does one side of your body feel weaker or "off" compared to the other? Hip weakness is often one-sided. You might feel fine on one leg but unstable on the other.

If you're nodding to any of these, hip weakness is likely part of your knee pain picture.

THE SCIENCE BEHIND WHY THIS MATTERS

Here's the physics part (especially for those of you who like understanding the "why"):

When you squat or step down, you're loading your leg. That load creates force going through your knee. Where that force goes depends on your alignment.

Think of it in terms of stress and strain. If your alignment is good, the stress of that load is distributed evenly across your knee joint. But if your hip muscles are weak and your thighbone is rotating inward, all that stress concentrates in one area of your knee—usually the inside or outside, where you feel the pain.

Your outer hip muscles are essentially your shock absorbers. When they're strong, they distribute load properly. When they're weak, load concentrates and causes pain.

This is why so many people feel their knee pain get worse over time if they don't address their hips. They keep loading the knee with poor alignment. Over weeks and months, that accumulated stress adds up.

The good news? Your outer hip muscles respond quickly to training. Within 2-3 weeks of consistent work, you'll notice a difference in your stability and knee pain.

START HERE: THE OUTER HIP EXERCISE

There are dozens of outer hip exercises. But if you're just starting and your knee pain is affecting your daily life, we keep it simple.

Here's what you do:

Lie on your side. Keep your feet together and your hips stacked. Open your top knee, keeping your feet touching. Think about the movement coming from your hip, not your spine.

Do this 3x per week. Start with 2 sets of 15 reps on each side.

You should feel this working in the outer part of your hip—not in your low back, not in your outer thigh. If it's in your low back, you're rotating your torso. Keep your torso still. All movement comes from your hip.

This might feel too easy. That's fine. Easy is exactly what you need right now if you have knee pain. You're waking up muscles that have been sleeping.

BUILD FROM HERE: STANDING STABILITY WORK

Once clamshells feel natural (usually 2-3 weeks), your outer hip is ready for a bit more challenge.

Building stability: Lateral band walk

Put a resistance band around your legs just above your knees (or around your ankles if above the knee feels awkward). Stand with a slight bend in your knees. Step sideways, keeping tension in the band. Your knees should stay lined up over your toes—not caving inward.

Do this 3x per week. 2 sets of 10-12 steps to each side.

The resistance band creates an outward pressure on your knees. Your outer hip muscles have to work to resist that inward collapse. That's the whole point.

Start with a light band. The challenge isn't the band resistance—it's maintaining good alignment while moving.

WHY THESE TWO EXERCISES (And Why We're Not Doing More)

You might be wondering: "Shouldn't I do way more exercises than this?"

Here's the thing: If you have knee pain, adding 10 different hip exercises isn't going to be better than doing 2 exercises really well, consistently, for weeks.

These two exercises target your outer hip muscles through different ranges and movement patterns. Clamshells work them when your hip is bent. Lateral band walks work them when you're standing. Between the two, you're hitting the muscles from multiple angles.

More importantly, they're simple enough that you'll actually do them. And consistency beats complexity every single time.

This is why the complete My Knee Coach program has a much more detailed and progressive system—it's designed to build on itself over time with your specific situation in mind. These two exercises are your foundation. They're your kickstart.

CONNECTING THE DOTS: HOW THIS FIXES YOUR SQUAT

Remember that stick analogy from earlier?

As your outer hip gets stronger, your thighbone stays in better alignment. Your shinbone tracks properly. Your knee sits in the middle of good alignment instead of being squeezed by poor alignment.

When you go back to squatting (especially in your pain-free range, like we talked about in [our complete guide to knee pain when squatting](link to pillar article)), your knee doesn't have to compensate anymore. The alignment is there. The stability is there.

That's when you notice something: Your pain starts to go away, or at least gets noticeably better.

This usually happens around week 3-4 of consistent outer hip work.

Many people are shocked at how much their knee pain improves just from addressing their hip weakness. They expected to need way more intervention. But once you fix the alignment issue, the pain often resolves on its own.

THE PATIENCE PART

Here's where most people get impatient:

You do clamshells for two weeks. You're not squatting heavy yet. You're not doing intense workouts. And you might think, "Am I wasting my time with these basic exercises?"

But your body is doing something important right now. Your outer hip muscles are getting stronger. Your nervous system is learning a new movement pattern. Your alignment is improving.

You're in the phase where calm is happening. Where stabilization is being rebuilt. Where the foundation is being set.

This is the unsexy part of the process. It's not Instagram-worthy. It's not impressive. But it's the part that actually fixes things long-term instead of giving you temporary relief.

The people who do this boring, basic work for 4-6 weeks are the ones who get back to their life pain-free.

The people who skip it and jump straight to heavy squats are the ones whose pain comes back a month later.

YOUR NEXT STEP

You now know that weak outer hips are probably contributing to your knee pain. You have two exercises to address it.

Here's what's left: Understanding your specific situation. Your knee pain might be partly hip weakness, but it might also be ankle stiffness or a different cheat pattern entirely. And the progression beyond these two foundational exercises—that's where personalization comes in.

That's where most people get stuck doing generic exercises and not seeing real results.

Would you like exercises, explanations, and guidance like this once a week? My newsletter walks through the real issues causing your knee pain, breaks down the fixes, and helps you build your strategy.

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CONNECT THE DOTS TO YOUR COMPLETE PICTURE

This outer hip weakness is one piece of your knee pain puzzle. In our complete guide to Knee Pain When Squatting, we walk through all the potential cheat patterns—hip weakness, ankle stiffness, tibia rotation issues—and how to identify which ones are affecting YOU.

If hip weakness is your main issue, these exercises are your starting point. If it's combined with other factors, you need the full system.

Either way, start with these two exercises. Do them consistently for 3 weeks. Notice what changes.

Then reach out to schedule a "Movement Check" or join the newsletter to keep learning about your knee.

Your outer hips are ready to get strong again. Let's make it happen.