Women with Knee Pain: Consider this Sleeping Adjustment

I was recently teaching a workshop at a local gym when I asked the audience, "Who here has knee pain?" Nearly two-thirds of the crowd raised their hands. While this number may seem alarmingly high, greater than 60% of people report knee pain at some point during their adult life. Generalized knee pain is the 3rd most common reason Americans visit their doctor each year. In the clinic, I find that women are at a greater risk for knee pain than men. Simple postural cues and sleeping adjustments can be made to minimize the stresses placed across the knee each day.

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Why is knee pain so common?

In a previous post, Knee Pain While Trail Running, I discussed why the knees are susceptible to injury. "The knee has motion in a single plane limiting the ability to absorb abnormal stresses from multiple angles. Since the knee only moves in one plane, the position of the hip and ankle have a profound effect on the forces that meet at the knee. ...When we don’t attend to the demands on the hip and ankle, the detriments often appear in the knee. If motion is lacking above or below the knee, the abnormal forces dispersed on the inherently unstable knee will result in pain." 

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How to Adjust Sleeping Habits

In general, women have wider hips than men. Wider hips increase the angle from the hips to the knees (this is known as the Q-angle). A large Q-angle predisposes the knees to collapse inward, which creates muscle imbalances across the knee joint.   For this reason, clicking and popping can occur at the kneecap. The clicking and popping is not harmful, but it is sign that something is not moving properly. Whenever these signs appear, it is important to look at one's prolonged postures (i.e. sitting, driving, and/or sleeping) to find the cause. Since most people sleep between 6-8 hours each evening, let's start there! 

As simple sleeping adjustment to perform each evening is to place a pillow either between the knees or underneath the back of the knee. For side sleepers, the pillow between the knees will stop the top knee from collapsing in on the bottom one. The pillow decreases the Q-angle and minimizes the prolonged stress placed on the outer hip muscles while sleeping. For back sleepers, the pillow underneath the knees will stop the them from overextending and collapsing inward. Additionally, it will place the hip joint in a relaxed position, which protects the low back and knee joints. 

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Pillow underneath the knees adjustment

Pillow between knees adjustment

Remember, these sleeping adjustments are only as beneficial as your exercise and postural habits throughout the day. It is important to incorporate gluteal and hip strengthening exercises (see below) to keep the hips and core strong.

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Two Scientifically-based Exercises for Knee Pain

Are you experiencing knee or low back pain?

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