4 Steps To Choosing A Menstrual Cup

Step 2: The Knuckle Rule

After finding your cervix, use the knuckle rule to determine if you have low, medium or high cervix.

If you can insert your index finger up to your first knuckle and feel your cervix with the tip of your finger, then you have a low cervix.

If you can insert your finger up to your second knuckle and feel your cervix, you have a medium cervix.

If you can insert your finger up to your third knuckle (biggest knuckle) and feel your cervix, you have a high cervix. If your finger is fully inserted and you still can’t feel your cervix then it may be very high. Just check again to make sure you haven’t missed it lower down in your vaginal canal.

The Knuckle Rule and Cup Length

I have a medium cervix. To give you a visual connection between the knuckle rule and cup length, take a look at the image below. You can see my first cup next to my index finger.

 

This is my small Lena cup next to my index finger. In my personal opinion, this cup is the ideal length if you have a medium cervix. The base of the cup and stem are always close to my vaginal opening, which means the cup is always within easy reach for removal.

I definitely would not recommend the small Lena if you have a high cervix. Just look at how far the base of the cup is from my third knuckle. If the cup drifts up throughout the day, you'll have hell trying to 'bare down' to get the base close enough for your fingers to reach.

Now let's add some measurements to the equation!

Menstrual cups are measured in millimeters, in the next post I'm going to show you how to measure your available cup space, so the next time you look at a cup comparison chart you'll automatically know which cup lengths can and cannot work for you.

Learn how to measure your available cup space by reading the post here.

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The information on this site is my personal opinion and is not intended to treat, diagnose or cure any disease or ailment. Always seek a medical professional when in doubt, only a health care professional can advise you on your specific situation.

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