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Adding hyaluronic acid to pudendal nerve blocks for treatment of pudendal neuralgia

Randomised cross-over trial assessing the efficacy of adding hyaluronic acid to local anaesthetic in pudendal nerve blocks in the treatment of pudendal neuralgia

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12617001378314
Enrollment
35
Registered
2017-09-28
Start date
2018-05-23
Completion date
2020-06-30
Last updated
2021-09-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study is a randomised cross-over trial assessing the efficacy of the addition of hyaluronic acid (HA) to levobupivicane in pudendal nerve blockade as a treatment for pudendal neuralgia. Previous studies have demonstrated that application of local anaesthetic along the path of the pudendal nerve results in the onset of numbness and a reduction in symptoms. This result is however, most often limited from a few hours to a few days . Recent studies have suggested that the addition of hyaluronic acid to the local anaesthetic blockade can result in improved and prolonged analgesia. AIM; to determine whether the addition of hyaluronic acid to local anaesthetic results in improved post-blockade pain scores, change in medication use and change in pain interference in daily activities. MATERIALS AND METHODS; This is a triple-blind randomised cross-over study in which each participant will receive two pudendal nerve blocks 3 months apart one of which will contain hyaluronic acid + levobupivicaine and the other placebo + levobupivicaine. Assessment of symptoms and effect on function will be via use of The Brief pain inventory – short form. We will also assess analgesia use pre and post blockade. RESULTS; Differences in pain and function scores pre and post blockade will be assessed using the students t-test with adjustments made for multiple comparisons. We will also use descriptive statistics to review any changes in medication use. CONCLUSION; if our null hypothesis is true we would expect to see no difference between HA acid and placebo. However, if the HA is effective then we would hope to see improved pain scores, decreased pain interference with life and potentially decreased medication use.

Interventions

This is a randomised cross-over trial looking at the efficacy of adding hyaluronic acid to local anaesthetic when performing pudendal nerve blocks for the treatment of pudendal neuralgia. Medication; - levobupivicaine 0.5% 3ml - 3ml hyaluronic acid 1% OR 3ml placebo gel - deep tissue neural block performed via a transgluteal approach under x-ray guidance - two treatments - treatments consist of either a unilateral or bilateral block (depending on patient symptoms) and are performed on two occas

This is a randomised cross-over trial looking at the efficacy of adding hyaluronic acid to local anaesthetic when performing pudendal nerve blocks for the treatment of pudendal neuralgia. Medication; - levobupivicaine 0.5% 3ml - 3ml hyaluronic acid 1% OR 3ml placebo gel - deep tissue neural block performed via a transgluteal approach under x-ray guidance - two treatments - treatments consist of either a unilateral or bilateral block (depending on patient symptoms) and are performed on two occasions with a 3 month wash out period between

Sponsors

WHRIA
Lead SponsorOther

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
16 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Clinical diagnosis of pudendal neuralgia No previous pudendal nerve block

Exclusion criteria

Previous pudendal nerve block

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026