# Jaw Muscle Injection (TMJ)

- Link: https://sifsof.com/clinical-apps/jaw-muscle-injection-tmj/
- Published: 2019-12-07T12:02:10+00:00
- Author: Developer

Due to the complex and dense anatomy of the region, blind injection of the temporalis
may result in an unintentional injury.

 Ultrasound‐guided injection of the temporalis tendon is based on visualization 
of the temporalis muscle, temporalis tendon, and coronoid process.

###  **Which ultrasound scanner do doctors use for Jaw muscle injections?  **

The doctors needs a **10 to 14 MHz ** **[SIFULTRAS-3.5](https://sifsof.com/product/linear-handheld-wifi-ultrasound-scanner-10-12-14-mhz-sifultras-3-5/)
Linear Ultrasound Scanner.**

 To visualize the temporalis tendon, the transducer is best placed inferior to the
anterior aspect of the zygomatic arch, unlike the temporomandibular joint, where
it is placed over the articular surface of the mandibular condyle

 When the mandible is in the closed‐mouth position, the coronoid process is anatomically
underneath the zygomatic arch and is therefore inaccessible. Opening the mouth fully
will bring the coronoid process out from under the arch to be visualized. The temporalis
tendon insertion can be visualized in the sagittal plane (long axis) in both the
open‐ and closed‐mouth positions but is best visualized in the axial plane (short
axis) in the open‐mouth projection, which is optimal for injection.

Once the musculotendinous junction is visualized, the needle is then directed to
the medial insertion imaging is required to locate the distal temporalis tendon 
and to confirm the presence of temporal tendinosis. The ultrasound‐guided anatomic
technique ensures correct injection of the direct temporalis tendon and prevents
potential injury of any of the closely adjacent structures. This technique is practical
for both the diagnosis and treatment of patients presenting with chronic facial 
pain syndromes.

 This way, the **[Anesthesiologist](https://sifsof.com/product-category/doctor-specialties/anesthesiologist/)**
can view the **mandibular condyle** on the screen.

References: Ultrasound‐Guided Injection of the Temporalis Tendon: A Novel Technique

![Jaw muscle injection scan result](https://sifsof.com/wp-content/uploads/2020/01/
TMJ.jpg)

 * ![Mini Linear Handheld WiFi Ultrasound Scanner 10-12-14 MHz, SIFULTRAS-3.5 main](
   https://sifsof.com/wp-content/uploads/2019/03/SIFULTRAS-3.5-mini-linear-ultrasound-
   scanner-300x300.jpg)
 * Mini Linear Handheld WiFi Ultrasound Scanner 10-12-14 MHz, SIFULTRAS-3.5
 * ![Color Doppler Mini Linear WiFi Ultrasound Scanner SIFULTRAS-3.51 main](https://
   sifsof.com/wp-content/uploads/2018/11/SIFULTRAS-3.51-wireless-mini-linear-color-
   doppler-ultrasound-scanner-300x300.jpg)
 * Color Doppler Mini Linear WiFi Ultrasound Scanner SIFULTRAS-3.51

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 _Although the information we provide is used but doctors, radiologists, medical
staff to perform their procedures, clinical applications, the Information contained
in this article is for consideration only. We can’t be responsible for misuse of
the device nor for the device suitability with each clinical application or procedure
mentioned in this article.
Doctors, radiologists or medical staff must have the 
proper training and skills to perform the procedure with each ultrasound scanner
device.