Comparing two methods for pain control after shoulder surgery

A Feasibility Randomized Control Comparison of Peripheral Interscalene Catheter to Liposomal Bupivacaine Single Injection for Interscalene Blocks Used in Pain Control for Total Shoulder Arthroplasties

PHASE4 · University of Iowa · NCT05868330

This study is testing whether a new way of delivering pain relief after shoulder surgery works better than the standard method to help patients feel less pain and recover more comfortably.

Quick facts

PhasePHASE4
Study typeInterventional
Enrollment56 (estimated)
Ages18 Years to 90 Years
SexAll
SponsorUniversity of Iowa (other)
Locations1 site (Iowa City, Iowa)
Trial IDNCT05868330 on ClinicalTrials.gov

What this trial studies

This study compares the effectiveness of an interscalene catheter versus a single injection interscalene block for managing post-operative pain in patients undergoing total shoulder arthroplasties. The research focuses on the use of liposomal bupivacaine, which may provide longer-lasting pain relief compared to traditional methods. By evaluating patient outcomes such as pain levels and satisfaction, the study aims to determine which method offers better recovery experiences and reduces the need for narcotics. The study is conducted at the University of Iowa Hospital and Clinics, targeting patients who meet specific eligibility criteria.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 90 undergoing reverse shoulder replacement surgery who can provide informed consent.

Not a fit: Patients with significant medical conditions, chronic opioid use, or those unable to cooperate during the procedure may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved pain management strategies for patients undergoing shoulder surgery, enhancing recovery and reducing opioid use.

How similar studies have performed: Previous studies have shown promise in using regional anesthesia techniques for post-operative pain management, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Patients who have or are:

1. Orthopedics service patients having reverse shoulder replacement surgery
2. ASA class I, II, or III.
3. Patients at least 18 years old but less than 90 years old.
4. Patients giving informed consent.
5. Non-Emergency Surgery

Exclusion Criteria:

Patients who have or are:

1. An inability to cooperate during the block placement.
2. Patients who do not meet criteria for a regional block: such as those on anti-coagulation,
3. Significant pulmonary disease or allergy to medications used for peripheral nerve blocks (Exparel, Bupivacaine and Ropivacaine)
4. Neuropathy of the planned extremity to block
5. Documented Kidney Failure
6. Documented Liver Failure
7. A lack of or inability to give informed consent.
8. Currently incarcerated.
9. Pregnant
10. Unable to communicate in English
11. Chronic pre-operative opioid use (greater than 20 MME opioid used)
12. Fracture
13. Revision surgery

Where this trial is running

Iowa City, Iowa

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Post Operative Pain, Anesthesia, Nerve Block, Shoulder Osteoarthritis, Shoulder Replacement, Interscalene block, Peripheral Nerve Catheter, Exparel

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.