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ClinicalTrials.gov 46 recruiting now later-stage tilt #112 of 28,707 conditions

Pain, Postoperative: later-stage trial registry

46 of 114 indexed Pain, Postoperative trials are currently recruiting, with more weight in Phase 3-4.

Corpus placement: #112 of 28,707 conditions by registered trial count.

114 US clinical trials · 46 currently recruiting · #112 of 28,707 conditions by registered trial count

Pain, Postoperative: 114 US clinical trials tracked, 46 recruiting.

Pain, Postoperative is the subject of 114 registered US clinical trials on ClinicalTrials.gov, 46 of them currently open to new participants. 53 are in Phase 3-4 (later-stage) and 18 in Phase 1-2 (earlier-stage). The most active sponsor is University of Michigan, running 5 of these trials.

Enrollment posture brief

Registry condition pain-postoperative

OPEN 46 | RECR 40% | LATE 53 | EARLY 18 | RANK #112 | SPON 5

Nearest open-share peer: Quality of Life (40% recruiting · 109 trials)

Diffuse Large B Cell Lymphom46.1%Healthy Volunteer43.4%Pain, Postoperative (this)40%Osteoarthritis, Knee39.1%Type 1 Diabetes Mellitus22.1%
Open-enrollment share among volume-matched conditions near Pain, Postoperative

Pain, Postoperative lists 46 open slots (40% of 114 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Pain, Postoperative on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Pain, Postoperative is recruiting above its size-band peers.

    46 of 114 indexed trials (40.4%) are open to enrollment, against a 37.1% average across 139 conditions with 100+ trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Pain, Postoperative trials is spread across many organizations.

    University of Michigan accounts for 5 of 114 trials (4.4%). 78 distinct sponsors appear on at least one study for this condition label.

  3. Typical Pain, Postoperative enrolment sits around 80 participants.

    Median target enrolment is 80 among the 114 trials that report a genuine target (sentinel values excluded). 67 of those (58.8%) plan for fewer than 100 participants.

  4. Pain, Postoperative research is mostly interventional.

    110 interventional and 4 observational studies make up this index (96.5% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 17Phase 211Phase 315Phase 438

Open and recent trials

114 total, page 2 of 3

ACTIVE NOT RECRUITING Phase 4 97 participants

Stopping Opioid Overuse in Obstetrics to Halt Exposure Trial

University of Missouri, Kansas City

NCT04680221

ACTIVE NOT RECRUITING Phase 4 88 participants

Exparel Injection for Postoperative Orbital Pain

Mayo Clinic

NCT02381353

ACTIVE NOT RECRUITING Phase 2 62 participants

Pectoral Nerve Blocks (PECs) for Cardiovascular Implantable Electronic Device Placement

Beth Israel Deaconess Medical Center

NCT05283980

ACTIVE NOT RECRUITING Phase 1 50 participants

A Prospective Randomized Double Blind Trial to Assess the Effect of a Single Preoperative Dose of Gabapentin on Postoperative Opioid Consumption in Patients Undergoing Rhinoplasty

Ohio State University

NCT03498261

ACTIVE NOT RECRUITING Phase 4 46 participants

Extended Postoperative Oral Tranexamic Acid in Knee Replacement

Campbell Clinic

NCT05099276

ACTIVE NOT RECRUITING NA 32 participants

Transcranial Magnetic Stimulation for Chronic Neuropathic Pain

University of California, San Francisco

NCT05593237

ACTIVE NOT RECRUITING 26 participants

Blood Ropivacaine Concentrations Following Chest Wall Nerve Block Continuous Infusion

Boston Children's Hospital

NCT02860091

COMPLETED 2,500 participants

Personalized Prediction of Persistent Postsurgical Pain

Washington University School of Medicine

NCT04864275

COMPLETED NA 1,471 participants

Healthcare Provider Behavior and Children's Perioperative Distress

University of California, Irvine

NCT01878747

COMPLETED NA 712 participants

Evaluation of an Interactive Opioid Risk Education Program (STOMP) for Parents

University of Michigan

NCT03287622

COMPLETED Phase 3 331 participants

Efficacy and Safety of IV Diclofenac (DIC075V) for Pain After Abdominal or Pelvic Surgery

Javelin Pharmaceuticals

NCT00448110

COMPLETED Phase 3 300 participants

Evaluate Efficacy and Safety of Extended Release (ER) Naproxen Sodium

Bayer

NCT01389284

COMPLETED NA 240 participants

Opioid Use After Thyroid and Parathyroid Surgeries

The Methodist Hospital Research Institute

NCT04955444

COMPLETED Phase 4 231 participants

The Effect of Liposomal Bupivacaine on Post Operative Pain and Narcotic Use After Bariatric Surgery

University of California, San Francisco

NCT03196505

COMPLETED NA 220 participants

Efficacy of Transversus Abdominis Plane Block Versus Local Injection of Pain Medication

Liberman, Eric, D.O.

NCT02314104

COMPLETED Phase 3 201 participants

Evaluation of N1539 Following Bunionectomy Surgery

Baudax Bio

NCT02675907

COMPLETED Phase 3 200 participants

Multicenter Study to Evaluate the Analgesic Efficacy of XP21L in Subjects With Pain Following Bunionectomy Surgery

Xanodyne Pharmaceuticals

NCT00375934

COMPLETED NA 200 participants

Optimizing Catheter Insertion Technique for Ultrasound-guided Continuous Peripheral Nerve Blocks

VA Palo Alto Health Care System

NCT01459523

COMPLETED Phase 3 194 participants

Evaluation of Preoperative N1539 in Total Knee Arthroplasty

Baudax Bio

NCT03434275

COMPLETED NA 174 participants

Expectations and Pain Control Advancement In surgeRy: The REPAIR Trial

University of New Mexi

NCT03726476

COMPLETED Phase 2 168 participants

Placebo-Controlled Evaluation of Intranasal Dexmedetomidine for Postoperative Analgesia Following Bunionectomy Surgery

Baudax Bio

NCT02284243

COMPLETED Phase 4 161 participants

Assessing Efficacy of Intravenous Acetaminophen for Perioperative Pain Control for Oocyte Retrieval

Massachusetts General Hospital

NCT03073980

COMPLETED Phase 4 154 participants

IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty

Hospital for Special Surgery, New York

NCT03020966

COMPLETED NA 149 participants

Transcutaneous Electrical Nerve Stimulation During Outpatient Endometrial Biopsy

Duke University

NCT05472740

COMPLETED Phase 3 147 participants

Comparison of Three Different Pain Blocks for Subjects Undergoing VATS (Video Assisted Thoracoscopic Surgery) Procedure.

Indiana University

NCT03151434

COMPLETED Phase 4 146 participants

Evaluation of Abdominal Wall Block With Liposomal Bupivacaine for Post-Operative Analgesia in Donor Nephrectomy

University of California, Los Angeles

NCT03294109

COMPLETED NA 133 participants

Mobile Educations Effect on Pain Outcomes

Mayo Clinic

NCT03301610

COMPLETED Phase 3 120 participants

Erector Spinae Block Versus Surgeon Infiltration in VATS Procedures

Indiana University

NCT03859635

COMPLETED Phase 2 118 participants

Perioperative Pregabalin in Ureteroscopy

University of Missouri-Columbia

NCT04122196

COMPLETED Phase 2 107 participants

Intraoperative Liposomal Bupivacaine vs. Bupivacaine for Total Hip Replacement Pain Management

American Hip Institute

NCT03001453

COMPLETED Phase 4 102 participants

Intraoperative TAP Block With Bupivacaine/Dexamethasone Against Liposomal Bupivacaine (Exparel®)

Cedars-Sinai Medical Center

NCT03723447

COMPLETED Phase 2 100 participants

Clinical Proposal for the Comparison of Intraperitoneal Anesthetic to Injected Local Anesthetic

Pinnacle Health System

NCT00508976

COMPLETED Phase 4 90 participants

Preemptive Local Anesthesia in Vaginal Surgery

Mayo Clinic

NCT00318292

COMPLETED NA 87 participants

Randomized Study Comparing the Use of Epidural Analgesia to Intravenous Narcotics for Laparoscopic Colorectal Resection.

University of California, Irvine

NCT02086123

COMPLETED NA 80 participants

Music Therapy in the Treatment of Perioperative Anxiety and Pain

University of Pittsburgh

NCT05263635

COMPLETED Phase 4 78 participants

Single Shot Liposomal Bupivicaine in Rotator Cuff Surgery

Indiana University

NCT03822182

COMPLETED Phase 4 76 participants

Liposomal Bupivacaine Versus Interscalene Nerve Block

University of Cincinnati

NCT03929146

COMPLETED Phase 4 75 participants

Methadone Versus Morphine for Orthopedic Surgery Patients

University of Louisville

NCT00892606

COMPLETED NA 72 participants

Pudendal Nerve Block in Vaginal Surgery

MetroHealth Medical Center

NCT04198714

COMPLETED Phase 3 71 participants

Safety and Clinical Utility Study of SSEC Fentanyl 40 mcg for Acute Post-op Pain Management in Pediatric Participants

The Medicines Company

NCT02395653

COMPLETED Early Phase 1 71 participants

Caffeine and Neurologic Recovery Following Surgery and General Anesthesia

University of Michigan

NCT03577730

COMPLETED Phase 3 67 participants

Analgesic Efficacy of Repeated Doses of Intravenous (IV) Acetaminophen in Post-operative Pediatric Spine Fusion Patients

Children's Hospital of Philadelphia

NCT01394718

COMPLETED Phase 4 65 participants

Preemptive Analgesia With Celecoxib for Acute Dental Pain Management

The University of Texas Health Science Center, Houston

NCT04790812

COMPLETED Phase 4 62 participants

Continuous Adductor Canal Blocks Vs. Low Dose Femoral Nerve Blocks For Early Rehabilitation After Total Knee Arthroplasty

Kevin King, DO

NCT02453321

COMPLETED NA 60 participants

BRIDGE Percutaneous Nerve Stimulation for Cesarean Delivery Pain Control

Grace Lim, MD, MS

NCT04365465

COMPLETED Early Phase 1 60 participants

Single Injection Adductor Canal Block Versus Continuous Adductor Canal Infusion for Total Knee Arthroplasty

Wake Forest University Health Sciences

NCT02991404

COMPLETED Phase 2 60 participants

Evaluate the Efficacy and Safety of VVZ-149 Injections for the Treatment of Postoperative Pain Following Bunionectomy

Vivozon

NCT03997812

COMPLETED NA 57 participants

The Effects of a Music Therapist Designed Listening Program on Intraoperative Vitrectomy

Vanderbilt University Medical Center

NCT03147235

COMPLETED NA 56 participants

Effect of Cold Therapy Implementation on Multi-modal Postoperative Pain Management

Cleveland Clinic Florida

NCT03129464

COMPLETED Phase 2 56 participants

Combination Dexamethasone and Bupivacaine Pain Control in Reduction Mammaplasty

Temple University

NCT04919317

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Phase Distribution

PhaseTrial count
Phase 1 7
Phase 2 11
Phase 3 15
Phase 4 38

Named interventions

Most-linked intervention names on Pain, Postoperative records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Placebo Drug
10 trials
Acetaminophen Drug
6 trials
Bupivacaine Drug
5 trials
Gabapentin Drug
3 trials
Exparel Drug
3 trials
Liposomal bupivacaine Drug
3 trials
Methadone Drug
3 trials
Placebo Other
3 trials

US sites by state

Facility locations filed on Pain, Postoperative trials. A trial with sites in several states counts in each.

California 28 trials
Massachusetts 12 trials
Texas 11 trials
Pennsylvania 11 trials
New York 9 trials
North Carolina 8 trials
Missouri 8 trials
Michigan 7 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this Pain, Postoperative page

114 registered trials, 46 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Pain, Postoperative condition card totals 114 registered trials; most-linked intervention Placebo; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.