insertion of infraspinatus
greater tubercle of humerus
The infraspinatus is a thick triangular muscle located on the posterior aspect of the scapula, originating from the infraspinous fossa of the scapula and inserting onto the greater tubercle of the humerus.
The following are the steps for the insertion of the infraspinatus muscle:
1. Position the patient in a prone position with their arm hanging off the side of the table.
2. Cleanse the skin overlying the greater tubercle of the humerus with an antiseptic solution.
3. Use sterile technique to introduce the needle and syringe into the infraspinatus muscle belly, approximately 2 to 3 cm below the level of the acromion process.
4. Gently advance the needle until it reaches the greater tubercle of the humerus.
5. Withdraw the plunger of the syringe to aspirate for blood or cerebral spinal fluid.
6. If no fluid is aspirated, slowly inject the medication into the muscle belly.
7. After injecting the medication, carefully remove the needle and apply gentle pressure to the site with sterile gauze.
8. Instruct the patient to perform gentle range of motion exercises to help distribute the medication.
Overall, it is important to use proper technique and sterile equipment during the insertion of the infraspinatus muscle to prevent infection or other complications. It is also important to monitor the patient for any adverse effects following the procedure.
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