- 2777 3377
- Unit A, 8/F, World Trust Tower, 50 Stanley Street, Central
- Unit A, 8/F, World Trust Tower, 50 Stanley Street, Central
Many people associate ultrasound primarily with pregnancy, where it is commonly used to visualize fetal development. It is a valuable medical imaging tool. Ultrasound technology can also be used in rehabilitation and musculoskeletal care settings. If you are experiencing chronic pain, soft tissue discomfort, or restricted movement, ultrasound therapy may be used as an adjunct modality within a broader chiropractic treatment plan with the aim of helping to manage symptoms. Research on its benefit is mixed, and this page explains where it may and may not help.
Ultrasound therapy in Hong Kong is offered by some chiropractic and physiotherapy clinics. This page explains how therapeutic ultrasound works, what a session involves, how it is used for soft tissue injury, muscle strain and tendon injury, and what research and NICE guidance say, so you can decide whether to book an assessment.
While diagnostic ultrasound focuses on imaging, therapeutic ultrasound is applied differently, with the aim of influencing tissues rather than producing images. It is sometimes used with the aim of short-term pain relief, tissue relaxation and easier movement when combined with active care.
Chiropractic ultrasound therapy is the use of therapeutic ultrasound by chiropractors as an adjunct to other care, and it is sometimes called ultrasonic therapy. Diagnostic ultrasound uses reflected sound waves to create images of structures such as tendons, muscles, joints and ligaments, and it assists with assessment.
Therapeutic ultrasound, however, is a separate application and is not intended for diagnostic imaging. Instead, it uses modified ultrasound settings to interact with muscles, tendons, connective tissues, and periarticular structures. It is typically used as an adjunctive therapy, meaning it supports—but does not replace—manual treatment, rehabilitation, and patient education.
There are two primary categories of therapeutic ultrasound, both of which involve sound waves penetrating through the skin and into underlying soft tissues.
Thermal ultrasound delivers continuous sound waves that generate gentle tissue heating. This approach is more commonly used in subacute or chronic conditions, where the goal may be to temporarily increase tissue extensibility, reduce muscle tension, or aim for short-term pain relief.
Pulse ultrasound delivers intermittent sound waves rather than continuous energy. This approach is more often used during acute or early-stage conditions, where the intention is to influence cellular processes and fluid movement rather than to generate heat.
Ultrasound waves operate at higher frequencies and shorter wavelengths than audible sound. These properties allow the waves to travel through soft tissues and interact with structures beneath the skin. In diagnostic ultrasound, reflected sound waves are converted into images. In therapeutic ultrasound, however, the objective is tissue interaction rather than visualization. It is not fully known how therapeutic ultrasound affects pain, and results vary with the condition, the treatment plan and the person. Some people experience pain relief and report faster healing of varying musculoskeletal conditions.
At a microscopic level, ultrasound waves produce mechanical vibrations within the tissues. These vibrations are thought to influence fluid movement and cellular activity. The sensation during treatment is usually subtle.
During ultrasound therapy, a physiological response known as hyperemia may occur. Hyperemia refers to a temporary increase in local blood flow, often associated with mild tissue heating. It is not a direct treatment for underlying pathology.
Every course of care starts with an assessment. Your chiropractor takes your history, examines the area and explains the options, including the option of no treatment. Treatment only starts with your consent.
Ultrasound therapy is delivered using a handheld applicator. The chiropractor applies a conductive gel either to the applicator head or directly to the area being treated. This gel is essential, as it reduces air interference and allows sound waves to be transmitted efficiently into the tissues.
Once the gel is applied, the chiropractor gently moves the applicator in slow, controlled circular or linear motions over the targeted area. This ensures even energy distribution and minimizes excessive tissue exposure in one location. Each treatment session typically lasts between 5 and 10 minutes, depending on the area being treated and the clinical objective.
Treatment should not be painful. Some individuals may experience a mild warming sensation or slight local discomfort, while others may feel very little at all. Tell your chiropractor if you feel pain or heat that is uncomfortable, and the treatment will be adjusted or stopped.
Following ultrasound therapy, your chiropractor may recommend specific exercises, stretches, or self-care strategies. Ultrasound therapy does not usually cause downtime and is considered a non-invasive intervention that does not limit normal movement or activity.
Therapeutic ultrasound may be used as an adjunct for the following types of pain, depending on the assessment. For several of them the evidence is limited, as explained under each heading and in the research section.
Therapeutic ultrasound has been used as part of care for a range of soft tissue injuries, including muscle strains, ligament sprains, bursitis, and tendon irritation. It is sometimes used with the aim of short-term symptom modulation when integrated into a broader rehabilitation program.
A muscle strain is a stretch or tear in a muscle, often after sudden effort or overload. Ultrasound therapy may be used as an adjunct for muscle strain, usually alongside activity modification and a graded return to movement. Active rehabilitation is the main part of recovery, and ultrasound is only an addition to the care plan. Your chiropractor will explain whether it is likely to add anything for your injury.
Ultrasound therapy is sometimes used during subacute or chronic tendon conditions, alongside exercise-based interventions. Tendon problems usually need progressive loading exercises, and for stubborn tendon pain other options, such as shockwave therapy, may also be discussed.
Therapeutic ultrasound has been incorporated into various stages of Achilles tendon rehabilitation. However, progressive loading and strengthening exercises remain an important component of tendon recovery.
A Cochrane review of therapeutic ultrasound for carpal tunnel syndrome found the evidence to be limited and of low quality, with the main comparison coming from a single small trial. Ultrasound therapy is most appropriately used alongside activity modification, exercise, ergonomic adjustments, and other interventions.
Plantar fasciitis is now more accurately understood as a degenerative condition rather than a purely inflammatory disorder. Ultrasound therapy may be used to reach deeper soft tissue structures with the aim of temporary pain relief. However, progressive loading exercises and movement-based rehabilitation remain the cornerstone of long-term management. See also our foot orthosis page.
In conditions such as adhesive capsulitis (frozen shoulder), rotator cuff–related pain, and subacromial bursitis, ultrasound therapy may be used with the aim of temporary pain reduction. It is usually combined with manual therapy and structured exercise rehabilitation.
Ultrasound therapy is sometimes used on the muscles and soft tissues involved in sciatica. It may temporarily increase local blood flow and reduce muscle tension, although it does not directly address nerve compression. NICE guidance on low back pain and sciatica (NG59) advises against offering therapeutic ultrasound for low back pain with or without sciatica. For more information on how to treat sciatica, you can read our previous blog on how to treat sciatica. You can also read our nerve compression syndromes page.
Lower back pain is sometimes managed with therapeutic ultrasound as an adjunct modality. NICE guidance (NG59) advises against it, and a Cochrane review found the evidence too sparse to conclude whether it helps chronic low back pain. Active care such as exercise, education, and graded movement is the main approach. See our low back pain page.
Ultrasound therapy delivers sound waves that create vibration and gentle heat within tissues. This may temporarily increase tissue extensibility and reduce stiffness, although the evidence is limited and meaningful functional improvements depend on active rehabilitation and movement retraining.
Research on therapeutic ultrasound is mixed.
Ultrasound therapy represents a possible supportive part of a wider plan. It is not a stand-alone treatment, and your chiropractor will talk with you about other options, including exercise, manual care and referral to a medical specialist where appropriate.
Ultrasound therapy sessions are short. There is no universal rule regarding how often it should be used. Chiropractors determine treatment frequency based on the individual’s condition, stage of healing, response to care, and overall rehabilitation goals. Response varies, and some people notice little benefit. If there is no measurable improvement, your chiropractor will discuss other strategies.
Low-intensity ultrasound has been studied for its effects on inflammation in soft tissue injuries. Some studies report reductions in pain and swelling, while others show limited or no clinically meaningful effect. For this reason, ultrasound therapy should be viewed as a supportive modality rather than a stand-alone anti-inflammatory treatment, and it is used as part of a care plan that emphasizes active rehabilitation.
When therapeutic ultrasound is applied at suitable settings by a trained professional, the treatment should not be painful. Your chiropractor will assess whether it is suitable for you before treatment.
Certain precautions are necessary. Therapeutic ultrasound is typically avoided in areas with known blood clots, active infections, malignant tumors, impaired sensation, or significant vascular abnormalities. It is also usually avoided in pregnancy over the abdomen or lower back, and over metal implants or pacemakers. Tell your chiropractor about your health history and any implants. If ultrasound therapy is not suitable, other options, including referral to a medical specialist, will be discussed.
Some people are surprised to learn that chiropractors use ultrasound therapy as part of musculoskeletal care. In clinical practice, it is commonly applied as an adjunct modality, rather than a primary treatment. Ultrasound is usually combined with exercise-based rehabilitation and manual therapies, which are described on our spinal manipulation and adjustment and flexion distraction therapy pages.
No. Ultrasound therapy should not be painful. Most people feel either nothing or a mild warming sensation in the treated area.
You may notice gentle warmth or mild vibration under the skin. Some people feel very little sensation, which is normal.
In most cases, yes. There is usually no downtime, and normal daily activities are usually fine after treatment. However, we may advise avoiding strenuous activity, heavy lifting, or high-intensity exercise for a short period, depending on your condition and response to treatment.
The technology is similar, but the purpose is different. Pregnancy ultrasounds are used for imaging, while therapeutic ultrasound aims to interact with tissues rather than create images.
Response varies. Some people notice short-term relief, while others do not notice major changes. Ultrasound therapy is usually combined with other treatments.
No. Ultrasound therapy is an adjunct treatment and is used alongside exercise, manual care, and education.
Exercises address the underlying cause of pain or dysfunction. Ultrasound may help make movement more comfortable in the short term.
No. They are different treatments. Ultrasound therapy uses high-frequency sound waves, while shockwave therapy uses acoustic pressure waves applied as short pulses. You can read more about it on our shockwave therapy page.
At our clinic, ultrasound therapy is fully included within the normal cost of a standard chiropractic visit, with no extra surcharges. Your personalized treatment plan will be decided after your initial assessment, and all standard consultation fees are explained clearly beforehand. You can contact the clinic on 2777 3377 or through our contact us page.
Some chiropractic and physiotherapy clinics in Hong Kong offer ultrasound therapy. Our chiropractors offer therapeutic ultrasound at Unit A, 8/F, World Trust Tower, 50 Stanley Street, Central, as part of a wider care plan.
If you have ongoing muscle, tendon or joint pain and are not sure whether ultrasound therapy may be suitable, an assessment can help. Our chiropractors offer ultrasound therapy in Hong Kong at Unit A, 8/F, World Trust Tower, 50 Stanley Street, Central. You can contact us on 2777 3377. You can also read our FAQs or the Patient Guide.
Our chiropractors are registered chiropractors in Hong Kong. You can read about them on our Our Doctors page.
National Institute for Health and Care Excellence. Low back pain and sciatica in over 16s: assessment and management (NG59). Recommendation 1.2.9.
Therapeutic ultrasound for chronic low back pain. Cochrane Database of Systematic Reviews. DOI: 10.1002/14651858.CD009169.pub3 (update of the 2014 review; searches to January 2020).
Page MJ, O’Connor D, Pitt V, Massy-Westropp N. Therapeutic ultrasound for carpal tunnel syndrome. Cochrane Database Syst Rev. 2013.
