What size needle is used for a trigger point (TP) release procedure?

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Last updated: February 19, 2025 • View editorial policy

From the Guidelines

Trigger Point Release Procedure Needle Size

A 21g needle is typically used for a trigger point (TP) release procedure, although the needle gauge can range from 19-23g 1.

  • The choice of needle size may depend on the location and depth of the trigger point, as well as the type of medication being used.
  • A smaller needle size may be used for more superficial trigger points, while a slightly larger needle size may be used for deeper trigger points.
  • The medication dose and duration will vary depending on the specific condition being treated and the patient's response to the procedure.
  • It is also important to consider the number of needle insertions per subject per session, which can range from 6-12 needles per treatment, with a mean of 9.6 needles per treatment 2.

From the Research

Trigger Point Release Procedure Needle Size

  • The size of the needle used for a trigger point (TP) release procedure can vary, with different studies utilizing different gauge needles.
  • A study published in 2016 3 used a 25-gauge hypodermic needle for percutaneous trigger digit release.
  • Another study from 2018 4 used a 22-gauge needle for thread trigger digit release, which was inserted into an 18-gauge needle.
  • A 2023 study 5 discussed open trigger finger release and percutaneous release, but did not specify the needle size used for percutaneous release.
  • A 2006 study 6 used a 19-gauge needle for percutaneous trigger digit release.
  • A 2016 study 7 used a 21-gauge needle for US-guided percutaneous release of the trigger finger.

Comparison of Needle Sizes

  • The needle sizes used in these studies range from 19-gauge to 25-gauge, with different studies achieving successful outcomes with different needle sizes.
  • The choice of needle size may depend on the specific procedure and the preference of the surgeon or physician performing the procedure, as evidenced by the various studies 3, 4, 6, 7.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.