Snap, Crackle & Pop: Why Do My Knees Make Noises - And Should I See a Doctor?

Do you ever just go about your daily life and then, seemingly out of nowhere, your knee makes a noise?

You might call it a weird idiosyncrasy and not think twice about it—or you might turn to the Internet to try and find all of the potential issues that might be wrong with your knee.

But if your knee pops or cracks once in a while, it’s usually no cause for concern. After all, joints sometimes make noises, and knees are no exception (especially when you squat or sit down.)

“Infrequent knee pops and cracks are more common in the younger population, says Nancy White, M.D., a sports medicine physician at Henry Ford Health. “When you feel that ‘pop,’ it means your kneecap was pulled a bit outside of where it’s supposed to be, and so it’s correcting itself and getting back into position. You can kind of feel that something moved.”

If, however, pain or swelling accompanies a noisy knee, you should have it evaluated by a sports medicine provider. And if your knee is popping or cracking regularly, that's another sign you should have it checked out. 

“If you let it go, your knee could get worse,” says Dr. White. “There are recommendations a doctor can make to prevent this from happening, such as strengthening and flexibility exercises.”

What Is Knee Crepitus?

If your knee sounds like Rice Krispies crackling (or you experience a grinding sensation) it likely means you have knee crepitus, which can signify the beginning of osteoarthritis behind the kneecap.

“Knee crepitus is primarily caused by an issue called patellofemoral dysfunction,” says Dr. White. That sounds like a mouthful, but it means that your knee isn’t tracking straight up and down like it’s supposed to.

“There’s cartilage on the back of your kneecap and on the front part of your thigh, and the cartilage on the front part of your thighbone makes a groove so the kneecap can glide straight up and down in a floating position,” says Dr. White. “If the cartilage is worn down (and inflamed, worn-down cartilage signifies osteoarthritis), the kneecap can’t smoothly glide up and down, causing knee crepitus.”

If you are experiencing knee crepitus, you should see a sports medicine primary care physician, especially if it is accompanied by pain. They can recommend a variety of treatments, such as physical therapy and cortisone injections.

Still not sure if your noisy knees are cause for concern? When in doubt, call your doctor. After all, the sooner your doctor can examine it, the sooner you can prevent an issue from getting worse.

To learn more about your orthopedic condition or to find a provider, visit henryford.com/ortho.

Dr. Nancy White is a sports medicine physician with Henry Ford Health. She sees patients at Henry Ford Medical Center – Novi, and Henry Ford Medical Center – Bloomfield Township.

Workout Basics: Warm-Ups & Cool-Downs

February 3, 2021

By Nick Parkinson, M.Ed., AT, ATC, TSAC-F
Henry Ford Health Systems

You may know a good warm-up — and cool-down — are essential to getting a good workout. You may also know that warming up your muscles and stretching them out after exercise can help prevent injury and keep you at the top of your game.

They’re the two bookends that help maximize a workout. Unfortunately, a lot of exercise enthusiasts don’t know how to warm up and cool down correctly.

Warm-Up Basics

A warm-up is exactly what it sounds like: The goal is to warm up your muscles and prepare your body for whatever you’re asking it to do. Warming up increases your body temperature and helps blood flow to the muscles that you’re using.

So if you’re going to play soccer, your warm-up should touch all of the muscles in your legs and core. Shooting hoops? You’ll need to add shoulders and arms to your routine. Circuit training at the gym? Choose a warm-up that flexes all of the muscles you’re about to use.

The thing that all warm-ups have in common is that they require dynamic (or constantly moving) motion, not static stretching (holding poses for a certain amount of time). In fact, static stretching prior to a workout can inhibit power and strength, especially if you’re doing something like weightlifting.

The anatomy of a solid warm-up:

• Before any activity, do about 10 minutes of light cardiovascular activity, whether walking, biking or jogging.

• Dynamic stretches. After you get your muscles moving, do a series of lunges, jumping jacks or toe touches to stretch a bit.

• Dive in. When you start your workout, begin slowly and gradually increase power and speed.

Cool-Down Basics

After you’ve put your body through a challenge, a good cool-down is essential. It helps slow down your heart rate gradually, relax your muscles and stretch them out.

Cool-down routines should always include some type of motion before you get to static stretching, especially if you’ve just finished a high-intensity workout. Static stretching improves flexibility and performance and it can also help stave off future injury.

As with warm-ups, the right cool-down exercises depend on the activity you engaged in. If you biked for 20 miles, you might coast on your cycle for a while before coming to a stop. If you ran, you might jog or walk before you begin stretching. As with your warm-up, the key is addressing every muscle group you worked during your workout.

The anatomy of a solid cool-down:

• At the end of your workout, slow the pace and intensity of whatever activity you’re doing. So, if you’re running, slow to a jog and then a walk for 5 to 10 minutes before stopping.

Stretch out the muscles you work, but don’t push past the point where you feel tight. Then, hold the position for at least 30 seconds. That’s how long it takes for the body to overcome its stretch reflex.

• Breathe through your stretches and make sure to finish your cool-down with deep, belly breaths.

Running short on time? Target muscle groups you may have injured in the past or that tend to get sore after activity. Cooling down will preserve your athleticism — and your ability to participate in daily activities — over the long term.

Be Good to Your Body

While there’s some controversy about whether warming up and cooling down can help prevent injury, there’s little dispute that they can help you ease in and out of activity.

The key is to find something that works for you. Your warm-up could be as simple as walking to the gym and doing a set of jumping jacks when you arrive. Your cool-down might just involve ending your workout 10 minutes early so you can slow down.

It doesn’t have to be complicated. It just has to give your heart and blood vessels a chance to breathe before and after activity.

Nick Parkinson, M.Ed., AT, ATC, TSAC-F, is the Supervisor of Athletic Training with Henry Ford Sports Medicine and also leads Sports Performance training at the William Clay Ford Center for Athletic Medicine. Learn more about Nick.

Want to learn more? Henry Ford Health System sports medicine experts are treating the whole athlete, in a whole new way. From nutrition to neurology, and from injury prevention to treatment of sports-related conditions, they can give your athlete a unique game plan.

Visit henryford.com/sports or call (313) 972-4216.