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Not yet recruitingNCT07887516Updated Oct 21, 2026

Nerve Block Resolution Time Display and Pain Complaints

An interventional study of Physical display in Postoperative Pain, Rebound Pain and Fracture, sponsored by Medical University of South Carolina. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-21.

Sponsored by Medical University of South Carolina · Not applicable, Interventional, and Prevention

Updated Oct 21, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
128
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This randomized prospective study will evaluate whether displaying the expected nerve block resolution time on a patient's splint reduces postoperative pain-related complaints after orthopedic surgery. Adults with a fracture who undergo surgery at the Medical University of South Carolina and receive a preoperative nerve block may be eligible. Participants will be randomly assigned to receive standard verbal communication alone or standard verbal communication plus a written display of the expected nerve block resolution time on the splint. The study will compare the number of postoperative pain-related phone calls between the two groups.

Read the detailed description

Peripheral nerve blocks are commonly used to provide perioperative pain relief after orthopedic surgery, but some patients experience rebound pain as the block resolves. Limited retention of verbal instructions may leave patients unprepared for the expected timing of nerve block resolution. This prospective, randomized study will enroll adults undergoing orthopedic surgery for a fracture who receive a preoperative nerve block as part of standard clinical care. Participants will be assigned to standard verbal communication alone or standard verbal communication plus a written display of the anticipated nerve block resolution time placed on the patient's splint. All other clinical care will remain unchanged. Demographic and postoperative information will be collected through medical record review. The study is intended to determine whether a persistent visual reminder improves preparedness and is associated with fewer postoperative pain-related complaints.

02

Conditions studied

  • Postoperative Pain
  • Rebound Pain
  • Fracture

Keywords

  • Peripheral nerve block
  • Nerve block resolution
  • Orthopedic surgery
  • Patient education
  • Pain complaints
03

In context

Pain, Postoperative

5,224 studies on the registry are indexed under Pain, Postoperative; 1,154 are open to participants now.

This study's planned enrollment of 128 is above the median of 75 across 4,457 interventional studies indexed under Pain, Postoperative.

Browse Pain, Postoperative studies →

Lead sponsor

Medical University of South Carolina is the lead sponsor of 871 studies on the registry; 163 are open to participants now.

Of its 131 completed or terminated interventional studies of FDA-regulated products, 104 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Age 18 years or older
  2. Present with a fracture and will subsequently undergo an operation with the Medical University of South Carolina Department of Orthopaedic Surgery
  3. Will receive a preoperative nerve block as part of their standard clinical care

Exclusion criteria

Exclusion Criteria:

  1. More than one fracture
  2. Cognitive impairment or inability to provide informed consent
  3. Declines or is unwilling to provide informed consent
  4. Currently imprisoned
  5. Patients who self-report being pregnant during eligibility screening
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
128 participants (estimated)

Study arms

  • Experimental
    Physical display

    Minimal intervention of a written physical display of anticipated nerve block resolution time on the patient's splint. This intervention will be supplemental to the standard communication regarding expected nerve block duration and postoperative pain management strategies. The intervention will not change any other aspect of clinical care.

    Other: Physical display

  • No intervention
    No physical display

    No physical display of information and will only receive standard of care, including verbal instructions of the anticipated nerve block duration and standard pain management directions.

Interventions

  • OtherPhysical display

    Minimal intervention of a written physical display of anticipated nerve block resolution time on the patient's splint. This intervention will be supplemental to the standard communication regarding expected nerve block duration and postoperative pain management strategies. The intervention will not change any other aspect of clinical care.

06

What researchers measure

Primary outcomes

  1. Rate of postoperative pain-related complaints in each group

    To evaluate whether physically displaying the expected nerve block resolution time on patients' splints reduces the rate of postoperative pain-related complaints. The rate will be measured as the percentage of patients in each study group who initiate at least 1 pain-related phone call within 48 hours of nerve block administration. Pain-related phone calls will be identified through patient chart review up to 48 hours after nerve block administration. Data will be compared between the interventional and control groups. The unit of measurement will be percentage of patients.

    Time frame: From time of nerve block administration until the time of first documented pain-related phone call or 48 hours from nerve block administration, whichever came first.

Secondary outcomes

  1. Age and postoperative pain-related complaints

    To evaluate the correlation between patient age and the rate of postoperative pain-related complaints. Age will be obtained by chart review and measured in years. The rate of postoperative pain-related complaints will be calculated as the percentage of patients within each age group who initiate at least 1 pain-related phone call within 48 hours of nerve block administration. Pain-related phone calls will be identified through patient chart review up to 48 hours after nerve block administration.

    Time frame: From time of enrollment until the time of first documented pain-related phone call or 48 hours from nerve block administration, whichever came first.

  2. Sex and postoperative pain-related complaints

    To evaluate the correlation between patient sex and the rate of postoperative pain-related complaints. Sex will be obtained by chart review and recorded as a categorical variable. The rate of postoperative pain-related complaints will be calculated as the percentage of patients within each sex who initiate at least 1 pain-related phone call within 48 hours of nerve block administration. Pain-related phone calls will be identified through patient chart review up to 48 hours after nerve block administration.

    Time frame: From time of enrollment until the time of first documented pain-related phone call or 48 hours from nerve block administration, whichever came first

  3. Race and postoperative pain-related complaints

    To evaluate the correlation between patient race and the rate of postoperative pain-related complaints. Race will be obtained by chart review and recorded as a categorical variable. The rate of postoperative pain-related complaints will be calculated as the percentage of patients within each race who initiate at least 1 pain-related phone call within 48 hours of nerve block administration. Pain-related phone calls will be identified through patient chart review up to 48 hours after nerve block administration.

    Time frame: From time of enrollment until the time of first documented pain-related phone call or 48 hours from nerve block administration, whichever came first

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Oct 2026; primary completion for Feb 2027, 4 months later.

Of 1,888 non-industry interventional studies with no phase under Pain, Postoperative, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 23. This study's planned 4 months is below that.

Counting every sponsor, half of 1,901 studies reached it within 11 months; a quarter within 6 and three quarters within 23.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 9, 2026
First posted
Oct 21, 2026
StartEst.
Oct 2026
Primary completionEst.
Feb 2027
CompletionEst.
Feb 2027
Last update
Oct 21, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Oct 21, 2026
Show all 1 update
  1. Oct 21, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07887516
Responsible party
Sponsor
First posted
Oct 21, 2026
Start date
Oct 2026 (estimated)
Primary completion
Feb 2027 (estimated)
Completion
Feb 2027 (estimated)
Last update
Oct 21, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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