Saphenous Nerve BlockNCT03845972
Effect of Saphenous Nerve and Nerve to Vastus Medialis Block Within Subsartorial Femoral Triangle on Quadriceps Strength
A study testing SSFTB in people with Saphenous Nerve Block and Regional Anesthesia Morbidity, run by Thammasat University at 1 site in Thailand.
Trial summary
This research objective is to compare quadriceps strength by measuring maximal voluntary isometric contraction (MVIC) and risk of fall before and after subsartorial femoral triangle block (SSFTB) Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Saphenous Nerve Block, Regional Anesthesia Morbidity, Postoperative Pain
- What is being tested?
- SSFTB
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteThailand
- Study dates
- 25 Apr 2018to 4 Jan 2019
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Eligible patients are all ASA class I-III, age 18-80 years, and have plan to perform SSFTB at Thammasat University Hospital consecutively
Who cannot join
- Exclusion criteria are patients who refuse to participate the study, morbid obesity (BMI ≥ 35 kg.m2), lower extremity neurological dysfunction, performing other peripheral nerve blocks, patients who cannot cooperate or measure MVIC, difference of quadriceps strength between two side of knees more than 10 percent, and SSFTB is not finally performed or failed block.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effect of Ultrasound-guided Saphenous Nerve and Nerve to Vastus Medialis Block Within Subsartorial Femoral Triangle on Quadriceps Strength
This research objective is to compare quadriceps strength by measuring maximal voluntary isometric contraction (MVIC) and risk of fall before and after subsartorial femoral triangle block (SSFTB)
- Being tested
- SSFTB
- Medical subject headings
- Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SSFTBProcedure or surgery
Also called nerve to vastus medialis and saphenous nerve block
Patients who underwent major knee surgery and had already planned to perform subsartorial femoral triangle block (SSFTB) were included in the study. They were measured the outcomes the night before surgery. The saphenous nerve and nerve to vastus medialis were blocked at the subsartorial femoral triangle level by experienced anesthesiologists. After standard monitor, the distal femoral triangle was identified 2 cm proximal to the opening of adductor canal by ultrasound guidance. At this level, The location of nerve to vastus medialis was confirmed by nerve stimulator and it was blocked with 0.5% levobupivacaine 5 ml. Then, 0.5% levobupivacaine 10 ml would be injected perifemoral artery. The outcomes were re-assessed 30 min after block.
| Study group | Role | What they receive |
|---|---|---|
| before SSFTB | No intervention | Not described |
| after SSFTB | Experimental | Not described Receives: Procedure: SSFTB |
What is being measured
The primary outcome is the main question the study is designed to answer.
quadriceps strength
Quadriceps strength will be assessed as MVIC with handheld dynamometer (HHD, Lafayette Instrument, Lafayette, IN).
Measured: 30 minutes after SSFTB
Secondary outcomes (2)
motor power of knee extension
The muscle power will be graded compared to another leg: 0 = No motor block, 1 = partial motor block, 2 = complete motor block.
Measured: 30 minutes after SSFTB
perception of fall 30 minutes
If the patient can be able to stand independently for at least 30 seconds without support, he or she will be asked to do functional reach test, which the patient should reach forward by staying put feet. The difference of starting and ending point of the reaching hand will be measured. If the patient cannot stand independently for at least 30 seconds without support or do functional reach test less than 25 cm indicates that he or she has a higher risk for falls.
Measured: 30 minutes after SSFTB
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Feb 2019
- Study start25 Apr 2018
- Primary completion4 Jan 2019
- Study completion4 Jan 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Saphenous Nerve BlockStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Thammasat University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Alisa Seangleulur, Thammasat University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03845972
- Sponsor's protocol ID
- ทป.2/44/2561
- Status last verified
- Feb 2019
- First submitted
- 19 Jan 2019
- Last updated
- 19 Feb 2019
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Feb 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Ultrasound-guided Saphenous Nerve and Nerve to Vastus Medialis Block Within Subsartorial Femoral Triangle on Quadriceps Strength
- ClinicalTrials.gov ID
- NCT03845972
- Acronym / sponsor ID
- ทป.2/44/2561
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Thammasat UniversityUniversity, hospital or other
- Study start
- 25 Apr 2018 (actual)
- Primary completion
- 4 Jan 2019 (actual)
- Study completion
- 4 Jan 2019 (actual)
- First posted
- 19 Feb 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This research objective is to compare quadriceps strength by measuring maximal voluntary isometric contraction (MVIC) and risk of fall before and after subsartorial femoral triangle block (SSFTB)
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| before SSFTB | No intervention | – |
| after SSFTB | Experimental | Procedure: SSFTB |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Eligible patients are all ASA class I-III, age 18-80 years, and have plan to perform SSFTB at Thammasat University Hospital consecutively
Key exclusion criteria (1 listed)
- Exclusion criteria are patients who refuse to participate the study, morbid obesity (BMI ≥ 35 kg.m2), lower extremity neurological dysfunction, performing other peripheral nerve blocks, patients who cannot cooperate or measure MVIC, difference of quadriceps strength between two side of knees more than 10 percent, and SSFTB is not finally performed or failed block.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| SSFTBAlso: nerve to vastus medialis and saphenous nerve blockPatients who underwent major knee surgery and had already planned to perform subsartorial femoral triangle block (SSFTB) were included in the study. They were measured the outcomes the night before surgery. The saphenous nerve and nerve to vastus medialis were blocked at the subsartorial femoral triangle level by experienced anesthesiologists. After standard monitor, the distal femoral triangle was identified 2 cm proximal to the opening of adductor canal by ultrasound guidance. At this level, The location of nerve to vastus medialis was confirmed by nerve stimulator and it was blocked with 0.5% levobupivacaine 5 ml. Then, 0.5% levobupivacaine 10 ml would be injected perifemoral artery. The outcomes were re-assessed 30 min after block. | Procedure or surgery | after SSFTB |
Primary outcome
quadriceps strength
Time frame: 30 minutes after SSFTB
Quadriceps strength will be assessed as MVIC with handheld dynamometer (HHD, Lafayette Instrument, Lafayette, IN).
2 secondary outcomes
motor power of knee extension
Time frame: 30 minutes after SSFTB
perception of fall 30 minutes
Time frame: 30 minutes after SSFTB
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Feb 2019.
- Individual participant dataSharing planned: No
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing SSFTB in people with Saphenous Nerve Block and Regional Anesthesia Morbidity, run by Thammasat University at 1 site in Thailand.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Feb 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Thailand. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
quadriceps strength (time frame: 30 minutes after SSFTB). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Feb 2019; AzTrials last refreshed its copy on 8 Nov 2026.