Trigger Point Injections for Neck, Back & Leg Pain

Could muscle trigger points be contributing to your pain?

Persistent neck, back or leg pain can affect movement, sleep and everyday activities. Sometimes tender areas within muscle contribute to symptoms, but not all ongoing pain comes from a muscle trigger point.

A clinical assessment helps identify the likely source and whether treatment should focus on muscle, a joint, a nerve or another problem.

What is a trigger point injection?

A trigger point is a tender area, often within a tight band of muscle, which can reproduce local or referred pain when pressed. Trigger point injections place a small amount of fluid into a selected area.

Local anaesthetic may be used, sometimes with another medicine. Ask your clinician what will be injected and why; steroid is not an automatic requirement.

What benefits might an injection offer?

Local anaesthetic can produce temporary numbness, which is different from a sustained treatment benefit. Injections are usually considered alongside approaches such as physiotherapy rather than replacing them.

What does the research tell us?

Kongsagul and colleagues reviewed records from 142 patients treated with ultrasound-guided physiological saline injections for myofascial pain. They reported pain reduction in 72.8% of the patients analysed.

This was a retrospective study of a particular saline technique, not proof that every trigger point injection has a 72.8% success rate. It should not be used to predict your individual outcome.

Why use ultrasound guidance?

Ultrasound can help the clinician see the target muscle, neighbouring structures and needle position in real time. This can be particularly useful near more sensitive anatomy.

Botwin and colleagues described an ultrasound-guided technique for neck and upper-back muscles in 2008. Their report suggested that guidance may help confirm placement and reduce the potential for an incorrectly positioned needle.

Is this the same as an injection for a trapped nerve?

No. A trigger point injection targets a selected muscle area. Nerve hydrodissection is a different procedure that uses fluid to separate a nerve from surrounding tissues in selected nerve-entrapment conditions.

These approaches have different targets and indications. Pins and needles, numbness or weakness need assessment rather than an assumption that a muscle injection will release a trapped nerve.

What should you discuss before treatment?

Your clinician should explain the working diagnosis, available alternatives and whether an injection offers a reasonable next step.

• Where your pain is felt and what brings it on.
• Previous treatment and whether it helped.
• All medicines, especially blood-thinning medication, and any allergies.
• Infection, other medical conditions or a possibility of pregnancy.
• The proposed injection, potential benefits and relevant risks.
• Aftercare, travel home, follow-up and the total cost.

Do not stop prescribed medicines unless the treating clinician tells you to. Check transport arrangements in advance and follow the clinic’s instructions about driving after treatment.

What happens during and after an injection?

1. Assessment and consent: the clinician identifies the target and discusses treatment with you.
2. Preparation: you are positioned comfortably and the skin is cleaned.
3. Injection: the needle is guided to the agreed area. Tell the clinician if you feel significant discomfort.
4. Aftercare: you receive advice on expected symptoms, activity and when to seek help.

Tenderness or bruising may follow an injection. Your clinician should explain how to manage this and when to resume exercise. Avoid treating temporary pain relief as permission to immediately return to heavy training.

Contact the clinician or NHS 111 for increasing redness, warmth, soreness or feeling feverish and unwell after treatment. Sudden breathlessness or chest pain after an injection near the chest requires emergency help: call 999.

Will I need repeat injections?

There is no single schedule suitable for everyone. Review the benefit, side effects and progress with rehabilitation before deciding whether another injection is appropriate.

Trigger point injections and sports-related pain

Muscle-related pain can occur alongside training overload or injury. Treatment should address the diagnosis and the demands of your sport.

An injection is not a guaranteed way to heal damaged tissue or speed up return to competition. Strength, movement and a graded return to activity remain important parts of the plan.

For persistent symptoms, contact The Podiatry Clinics to discuss a suitable assessment. The team can advise whether your concern is within the clinic’s treatment scope.