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  • Title: Cadaveric validation of dry needle placement in the lateral pterygoid muscle.
    Author: Mesa-Jiménez JA, Sánchez-Gutiérrez J, de-la-Hoz-Aizpurua JL, Fernández-de-las-Peñas C.
    Journal: J Manipulative Physiol Ther; 2015 Feb; 38(2):145-50. PubMed ID: 25433977.
    Abstract:
    OBJECTIVE: The aim of this anatomical study was to determine if a needle is able to reach the lateral pterygoid muscle during the application of dry needling technique. METHODS: A dry needling approach using 2 needles of 50 to 60 mm in length, one inserted over the zygomatic process posterior at the obituary arch (for the superior head) and other inserted below the zygomatic process between the mandibular condyle and the coronoid process (for the inferior head), was proposed. A progressive dissection into 3 stages was conducted into 2 heads of fresh male cadavers. First, dry needling of the lateral pterygoid muscle was applied on the cadaver. Second, a block dissection containing the lateral pterygoid was harvested. Finally, the ramus of the mandible was sectioned by osteotomy to visualize the lateral pterygoid muscle with the needle placements. RESULTS: With the needles inserted into the cadaver, the block dissection revealed that the superior needle reached the superior (sphenoid) head of the lateral pterygoid muscle and the inferior needle reached the inferior (pterygoid) head of the muscle. At the final stage of the dissection, when the ramus of the mandible was sectioned by osteotomy, it was revealed that the superior needle entered into the belly of the superior head of the lateral pterygoid muscle. CONCLUSIONS: This anatomical study supports that dry needling technique for the lateral pterygoid muscle can be properly conducted with the proposed approach.
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