---
title: Ultrasound Guided Investigation Of The Anatomical Features For Caudal Block In Children With Sacral Dimple
nct_id: NCT04861935
overall_status: COMPLETED
phase: NA
sponsor: Istanbul University
study_type: INTERVENTIONAL
primary_condition: Sacrococcygeal Disorder
countries: Turkey (Türkiye)
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT04861935.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT04861935"
ct_last_update_post_date: 2023-02-24
last_seen_at: "2026-05-12T06:47:28.113Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Ultrasound Guided Investigation Of The Anatomical Features For Caudal Block In Children With Sacral Dimple

**NCT ID:** [NCT04861935](https://clinicaltrials.gov/study/NCT04861935)

## Key Facts

- **Status:** COMPLETED
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 120
- **Lead Sponsor:** Istanbul University
- **Conditions:** Sacrococcygeal Disorder
- **Start Date:** 2022-11-11
- **Completion Date:** 2023-02-11
- **CT.gov Last Update:** 2023-02-24

## Brief Summary

When dimples are detected in the sacral region, most practitioners consider it to be a sign of spinal anomaly and avoid caudal block. Ultrasound guided investigation of the anatomical features for caudal block in normal children and in children with sacral dimple will be informative for practitioners.

## Detailed Description

A dimple over the sacrum may be an isolated finding or a sign of underlying spinal abnormality. Therefore, most practitioners are confused to perform a caudal block. Ultrasonography is a safe and cost effective screening tool in pediatric patients. Ultrasound guided investigation of the anatomical features of sacral region may play a key role to eliminate suspicions. It is possible to detect spinal abnormalities and also measuring dural sac level, distance between dural sac and estimated needle insertion site or needle entry angle. In this study, we will examine whether there is a difference between normal children and children with dimple in the sacral region.

## Eligibility

- **Minimum age:** 1 Month
- **Maximum age:** 72 Months
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

-Children aged 1-72 months who are taken to the operating room for any reason

Exclusion Criteria: Patients with

* spinal anomalies,
* history of prematurity,
* neurological disorder
* syndromic illness.
```

## Arms

- **ultrasound evaluation of sacral region in normal pediatric patients** (PLACEBO_COMPARATOR) — Ultrasound evaluation of sacral region will be performed to detect spinal abnormality.

Dural sac level and its distance to estmated injection site, optimal entry angle for caudal block will be measured.
- **ultrasound evaluation of sacral region in patients with sacral dimple** (ACTIVE_COMPARATOR) — Ultrasound evaluation of sacral region will be performed to detect spinal abnormality.

Dural sac level and its distance to estmated injection site, optimal entry angle for caudal block will be measured.

## Interventions

- **ultrasound evaluation** (DEVICE) — ultrasound evaluation of normal patients and patients who have a sacral dimple

## Primary Outcomes

- **ultrasound measurement-1** _(time frame: 1 min)_ — Dural sac level (mm)
- **ultrasound measurement-2** _(time frame: 1 min)_ — distance between injection site and dural sac(mm)
- **ultrasound measurement-3** _(time frame: 1 min)_ — optimal entry angle (0-angle degree) for caudal block

## Secondary Outcomes

- **ultrasound evaluation of sacral region** _(time frame: 10 minutes)_

## Locations (1)

- Istanbul University Cerrahpasa, Istanbul, Turkey (Türkiye)

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.istanbul university cerrahpasa|istanbul||turkey (türkiye)` — added _(2026-05-12)_

---

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*Source data (authoritative): https://clinicaltrials.gov/study/NCT04861935*  
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