The Effect of Different Molecular Weight of HA for Carpal Tunnel Syndrome
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ClinicalTrials.gov Identifier: NCT04766918 |
Recruitment Status :
Recruiting
First Posted : February 23, 2021
Last Update Posted : April 27, 2022
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Recently, nerve hydrodissection is utilized to assist ultrasound-guided nerve injection and studies recommend its clinical benefit for peripheral entrapment neuropathy. Hyaluronic acid (HA) can decrease the post-surgery adhesion of soft tissue and nerve but its clinical application in clinical practice is very rare.
We just proved that single HA injection have short-term effectiveness in mild-to-moderate carpal tunnel (CTS) cases and this finding may hint the therapeutic effectiveness of nerve hydrodissection for CTS depend on absorption time of solution. In addition, no study compare different weight of HA for nerve injection so far. Hence, the purpose of this study aim to compare different weight of HA for CTS and whether hydrodissection effect depend on the absorption time of solution or not.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Carpal Tunnel Syndrome | Procedure: Sono-guided injection with high molecular weight hyaluronic acid Procedure: Sono-guided injection with low molecular weight hyaluronic acid | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 48 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | The Effect of Different Molecular Weight of Hyaluronic Acid for Patients With Carpal Tunnel Syndrome |
Actual Study Start Date : | August 1, 2021 |
Estimated Primary Completion Date : | August 31, 2023 |
Estimated Study Completion Date : | August 31, 2023 |

Arm | Intervention/treatment |
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Experimental: High molecular weight hyaluronic acid
Ultrasound-guided hydrodissection with high molecular weight hyaluronic acid between carpal tunnel and median nerve (total 2 times with one-week interval)
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Procedure: Sono-guided injection with high molecular weight hyaluronic acid
Sono-guided injection with hyaluronic acid (Aragan Plus, 20 mg/2 ml, 3000kDa) between carpal tunnel and median nerve |
Active Comparator: Low molecular weight hyaluronic acid
Ultrasound-guided hydrodissection with low molecular weight hyaluronic acid between carpal tunnel and median nerve (total 2 times with one-week interval)
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Procedure: Sono-guided injection with low molecular weight hyaluronic acid
Sono-guided injection with hyaluronic acid (ARTZDispo, 25 mg/2 ml, 600-1200kDa) between carpal tunnel and median nerve |
- Change from baseline of severity of symptoms and functional status on 2nd week, 1st, 3rd, 6th month after injection [ Time Frame: Pre-treatment, 2nd week, 1st, 3rd, 6th month ]Boston carpal tunnel syndrome questionnaire (BCTQ) is a frequently used patient-based questionnaire for measurement of CTS which encompasses two components. In total, 11 questions and 8 items were evaluated to rate the symptom severity scale (SSS) and functional status scale (FSS), respectively. Both subscales range from 1 to 5 with a higher score indicating a higher degree of disability. The mean of total SSS and FSS divided with each item score were used for further analysis.
- Change from baseline of pain on 2nd week, 1st, 3rd, 6th month after injection [ Time Frame: Pre-treatment, 2nd week, 1st, 3rd, 6th month ]Digital pain severity or paresthesia/dysthesia was evaluated using visual analog scale (VAS). Pain score scale ranged from 0 to 10, with 10 indicating the most severe pain.
- Change from baseline of cross-sectional area of the median nerve on 2nd week, 1st, 3rd, 6th month after injection [ Time Frame: Pre-treatment, 2nd week, 1st, 3rd, 6th month ]Using the musculoskeletal sonogram to measure the cross-sectional area of the median nerve before treatment and multiple time frame after treatment.
- Change from baseline of conduction velocity, amplitude of median nerve on 2nd week, 1st, 3rd, 6th month after injection [ Time Frame: Pre-treatment, 2nd week, 1st, 3rd, 6th month ]electrophysiological study of the median nerve before treatment and multiple time frame after treatment.
- Change from baseline of mobility of median nerve on 2nd week, 1st, 3rd, 6th month after injection [ Time Frame: Pre-treatment, 2nd week, 1st, 3rd, 6th month ]Using the musculoskeletal sonogram to measure the mobility of the median nerve before treatment and multiple time frame after treatment.

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Ages Eligible for Study: | 20 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Age between 20-80 year-old.
- Diagnosis was confirmed using an electrophysiological study
Exclusion Criteria:
- Cancer
- Coagulopathy
- Pregnancy
- Inflammation status
- Cervical radiculopathy
- Polyneuropathy, brachial plexopathy
- Thoracic outlet syndrome
- Previously undergone wrist surgery or steroid injection for CTS

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04766918
Contact: Yung-Tsan Wu, MD | +886287923311 | crwu98@gmail.com | |
Contact: Yung-Tsan Wu | +886287923311 | crwu98@gmail.com |
Taiwan | |
Tri-Service General Hospital, School of Medicine, National Defense Medical Center | Recruiting |
Taipei, Neihu, Taiwan, 886 | |
Contact: Yung-Tsan Wu, MD +886-2-8792-3311 ext 17068 crwu98@gmail.com | |
Principal Investigator: Yung-Tsan Wu, MD |
Responsible Party: | Yung-Tsan Wu, Attending Physician and associated professor of Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital |
ClinicalTrials.gov Identifier: | NCT04766918 |
Other Study ID Numbers: |
Different molecular HA for CTS |
First Posted: | February 23, 2021 Key Record Dates |
Last Update Posted: | April 27, 2022 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Supporting Materials: |
Study Protocol |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Hydrodissection hyaluronic acid |
Carpal Tunnel Syndrome Syndrome Disease Pathologic Processes Median Neuropathy Mononeuropathies Peripheral Nervous System Diseases Neuromuscular Diseases Nervous System Diseases Nerve Compression Syndromes |
Cumulative Trauma Disorders Sprains and Strains Wounds and Injuries Hyaluronic Acid Adjuvants, Immunologic Immunologic Factors Physiological Effects of Drugs Viscosupplements Protective Agents |