The length of needle penetration depends on which body part is getting treated. We have a range of needle lengths starting from 1.3 cm for facial points all the way to 10 cm for lower back and hips on a larger person. The most common lengths of needles that are used are 4.5 to 6.5 cm in length.
It is important to note that needles do need to penetrate deep enough to reach the contractures (fixed tightening of muscle) deep within the muscles which are beyond the finger’s reach and can only be discovered by probing with a needle.
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