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A trigger point is a painful area in a muscle. It may feel like there is “knot” in the muscle or an area of tightness. When pressure is applied to the trigger point, the pain spreads out to other areas of the body.
A trigger point injection is a shot that is given in this painful spot.
If you have a trigger point in the thigh muscle, the doctor can give an injection to relieve pain.
First, the skin around the painful area will be cleansed with an antiseptic. Next, the doctor will locate the trigger point. This may be done by feeling for the painful area with his fingers. Once the trigger point in found, a thin needle containing medicine will be injected. The injection may contain a long-acting pain reliever, a water solution, or a
to reduce inflammation.
is also sometimes used for trigger point injections associated with muscle contraction. Sometimes the doctor will simply put the needle into the trigger point and not inject any medicine. This is all done to break the pain cycle at the trigger point. If you have more than one trigger point, you may need several injections.
Some doctors may use needle-guided electromyography (EMG) to locate the trigger point. With this approach, a needle will send information to a monitor, which will allow the doctor to make sure he has located the right spot.
The hospital staff will apply pressure to the injection site and place a bandage there. You will be observed for a short time to make sure you do not have any poor reactions to the injection. Then, you will be able to go home or return to work.
Take these steps to help ensure a smooth recovery:
To reduce soreness, apply ice or a cold pack to the affected area for 15-20 minutes, four times a day. You may want to do this for several days. Wrap the ice in a towel. Do not apply it directly to your skin.
Take over-the-counter pain medicine as recommended by your doctor. The soreness should go away in a couple of days.
Follow your doctor’s instructions for doing physical therapy. You may need to meet with your physical therapist soon after the injection to take advantage of the pain relief in your muscles.
You may have pain relief for weeks or even months. In some cases, though, you may need to have more than one trigger point injection. Talk to your doctor about how often you will need this treatment.
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