For me Knee strike is a finishing technique.

Coming from both Muay Thai and Ashihara, the knee is indeed one of the most used in our arsonary of weapons.

a well trained knee and well placed knee has been tested as power ratio being similar to be hit by a car traveling a 40 mile per hour.

anywhere in kata, a raised leg is either a knee strike or a shin block or both
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A man is but the product of his thoughts what he thinks, he becomes.

Ken