Trigger Point Injections (TPIs)

Trigger Point Injections are a minimally invasive treatment designed to relieve myofascial pain, which is a common cause of muscle tightness, soreness and restricted movement. Trigger points, often referred to as “muscle knots,” form when bands of muscle fibres stay in a constant state of contraction and fail to relax.

By delivering medication directly into these tight areas, the injection helps deactivate the trigger point, ease muscle tension and restore normal movement. TPIs are typically recommended when rest, medication or physiotherapy alone have not provided lasting relief.

trigger point injections Singapore.
Trigger point injections release tight muscle knots and restore normal muscle function.

What causes Trigger Points to form?

Trigger points develop when muscles experience repeated stress, injury or poor recovery after overuse. This strain reduces blood flow and oxygen to the area, leading to an energy deficit within the muscle cells. Without enough adenosine triphosphate (ATP), the molecule responsible for muscle relaxation, the fibres remain contracted.

This persistent contraction can cause:

  • Localised pain or tenderness
  • Muscle twitching or stiffness
  • Reduced flexibility and strength
  • Referred pain (felt in a different location)

Some of the contributing factors include:

  • Inadequate warm-up or recovery – skipping stretches before or after physical activity.
  • Poor ergonomics – prolonged sitting or slouching at a desk.
  • Repetitive strain or microtrauma – from daily posture, heavy lifting or sports activity.

Stress and tension – emotional strain can cause unconscious jaw clenching or shoulder tightening.

trigger point injections for pain relief.
Ultrasound guidance ensures accuracy and safety during injection.

What are the types of Trigger Point Injections?

TPIs can be performed using different injectable solutions. This depends on your condition and comfort, such as:

  • Local anaesthetic – temporarily numbs the area to relieve pain.
  • Saline – helps flush out the trigger point and relieve tightness.
  • Corticosteroids – reduce inflammation and prolong pain relief in severe cases.
  • Botulinum toxin – blocks nerve activity at the muscle, promoting deeper relaxation.
  • Dry needling – involves inserting a fine needle into the trigger point without any medication. This mechanical stimulation alone can release tension and restore circulation.

What are the benefits of Trigger Point Injections?

Many patients find TPIs effective for both immediate and long-term pain relief. The benefits include:

  • Better response to physiotherapy – relaxed muscles respond more effectively to stretching and strengthening exercises.
  • Faster recovery – helps speed up healing after muscle strain or injury.
  • Improved mobility – enhances range of motion in the neck, shoulders, back or hips.
  • Reduced muscle tightness – allows the affected muscle to relax and recover.
  • Relief from referred pain – alleviates secondary discomfort caused by nerve irritation.

What conditions can Trigger Point Injections help treat?

These injections are suitable for various muscle-related pain conditions, particularly when muscle knots are involved. The commonly treated areas include:

TPIs are also used as part of pain management for conditions such as:

  • Fibromyalgia
  • Myofascial pain syndrome
  • Tension-type headaches
  • Sport-related muscle tightness
  • Postural strain

What to expect during a Trigger Point Injection treatment?

trigger point injection benefits.
Relief can last for several weeks to months, especially when combined with physiotherapy.

The treatment is typically performed as an outpatient procedure. It is a quick process, often taking less than 30 minutes from start to finish.

It generally entails:

  • Assessment – before the injection, our doctor will carefully examine the area of pain to identify the affected muscles and locate the trigger points. They may gently press on specific spots to pinpoint areas of tightness or tenderness. During this stage, you will also have the opportunity to discuss your symptoms, medical history and any medications or allergies. This ensures that the treatment plan is safe and tailored to your needs.
  • Preparation – once the target area is confirmed, the skin is thoroughly cleaned to maintain sterility. A small amount of local anaesthetic may be applied or injected to minimise discomfort. An ultrasound may be used to visualise the muscle beneath the skin, ensuring accuracy and avoiding nearby nerves or blood vessels.
  • Injection – our doctor will then insert a very fine needle directly into the trigger point. You may feel a slight pressure or a brief twitching sensation as the muscle releases its tension. Depending on your treatment plan, a small amount of medication will be delivered through the needle to help the muscle relax and reduce inflammation. If dry needling is performed, no medication is injected as the mechanical stimulation of the needle itself helps break the pain cycle.
  • Completion and observation – once the injection is complete, the needle is removed and the site is gently cleaned again. A small dressing or plaster may be applied to protect the area. You will typically rest for a short while in the clinic before being allowed to go home. Most people can return to their normal daily activities immediately after.

What should I expect after the injection?

Mild soreness, tightness or bruising around the injection site is normal and usually resolves within a few days. Applying an ice pack and gentle stretching can help ease any discomfort.

Our doctor may recommend:

  • Avoiding strenuous activities for 24 to 48 hours
  • Continuing physiotherapy or stretching exercises as advised
  • Staying hydrated to aid muscle recovery

Most patients notice gradual improvement within a few days. However, relief may continue to build over a week as the muscle relaxes fully.

How long does it take for Trigger Point Injections to take effect?

Relief is not always immediate. Some patients notice a light, relaxed feeling in the treated muscle within a few hours, while for others, it may take a few days for the full effect to settle in. This gradual improvement occurs as muscle fibres recover their normal elasticity and blood flow improves in the previously tight area.

In the days following treatment, discomfort may briefly increase before easing. This is part of the muscle’s natural healing response. Gentle stretching and rest can help enhance results during this period.

Most patients experience noticeable pain reduction and better movement within 3 to 5 days of the procedure.

How long do the effects of Trigger Point Injections last?

Duration of relief varies depending on the severity of the muscle tension, lifestyle factors and whether underlying causes are addressed. In general, results can last from several weeks to a few months.

To maintain the benefits, our doctor may recommend follow-up injections spaced a few weeks apart, especially for chronic or recurring pain. Combining injections with physiotherapy, ergonomic adjustments and stress management can also help sustain muscle relaxation and prevent future trigger points from forming.

Regular review with our pain specialist ensures that your treatment plan evolves in tandem with your recovery, providing long-term, lasting relief.

trigger point injection treatment.
Targeted pain management helps patients move more freely and comfortably.

Summary

Trigger point injections offer a safe, effective and minimally invasive way to relieve chronic muscle tension and myofascial pain. By targeting specific knots within tight muscles, the treatment helps restore flexibility, improve circulation and ease discomfort caused by overuse or strain.

When combined with physiotherapy, posture correction and stress management, TPIs not only relieve existing pain but also reduce the likelihood of recurrence. Most patients experience meaningful relief within days and can return to their usual activities soon after the procedure.

If persistent muscle tightness or deep, localised pain has been limiting your movement, a consultation with our doctor can help determine whether trigger point injections are right for you. Do schedule an appointment to have your symptoms assessed, as early treatment can prevent chronic pain from worsening and help you regain long-term comfort and mobility.

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