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Clinical Trial Details — Status: Withdrawn

Administrative data

NCT number NCT02341079
Other study ID # NMCSD.2014.0101
Secondary ID
Status Withdrawn
Phase Phase 2/Phase 3
First received January 14, 2015
Last updated March 7, 2017
Start date March 2015
Est. completion date October 2015

Study information

Verified date March 2017
Source United States Naval Medical Center, San Diego
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of the study is to evaluate the efficacy of local infiltration of liposomal bupivacaine versus use of an indwelling femoral peripheral nerve block in controlling early postoperative pain in primary total knee arthroplasty. The investigators hope to demonstrate equivalency of treatment modalities to provide an alternative to the commonly used treatment of femoral nerve blockade.


Description:

Postoperative pain control in total knee arthroplasty is generally managed by a multimodal approach of premedication, epidural and/or peripheral nerve blocks, narcotic medications, and anti-inflammatories. Multiple studies have evaluated the efficacy of anesthetic "cocktails" of various medications for local tissue infiltration to aide in controlling postoperative pain. A recent systematic review supported the use of local anesthetic infiltration in a single intraoperative dose as an adjunct to femoral nerve block in the relief of pain; with combinations of ropivacaine, ketorolac, and adrenaline providing the best results. Several studies noted decreases in opioid consumption and overall pain scores in the perioperative period.

A novel compound, liposomal bupivacaine (EXPAREL®, Pacira Pharmaceuticals, Inc., Parsippany, NJ, USA), has been proposed for use in total knee arthroplasty. To our knowledge, only one randomized controlled trial involving use of this compound in total knee arthroplasty has been published and was performed as a phase two dose ranging trial comparing liposomal bupivacaine to bupivacaine HCl. No statistically significant difference between the two compounds was shown, but a trend towards benefit in short term pain control was shown with EXPAREL 532mg.

Our current pain management regimen utilizes the multimodal approach of neuraxial anesthesia, indwelling femoral nerve catheter, opioids, and anti-inflammatory medications. The regional anesthesia service manages postoperative pain while the indwelling femoral nerve catheter is in place. The epidural is utilized for early postoperative analgesia and thromboprophylaxis. The epidural is discontinued on post-operative day 1 and the femoral nerve catheter is removed by the morning of postoperative day 3. Although femoral nerve catheters provide excellent pain control following TKA, there are associated disadvantages. Most notably there is inherent quadriceps weakness which places the patient at increased fall risk. To reduce the risk of falling, patients must wear a knee immobilizer with ambulation until the catheter is removed and quadriceps function has returned. This may delay the ability to actively participate in physical therapy.

The purpose of our present study is to evaluate the efficacy of local infiltration of liposomal bupivacaine versus use of an indwelling femoral peripheral nerve block in controlling early postoperative pain. The investigators aim to show equivalency between the two treatment modalities. Our hypothesis is that a systematic local infiltration of liposomal bupivacaine provided intraoperatively is equally efficacious as femoral indwelling peripheral nerve blockade in immediate postoperative pain control with more rapid progression with physical therapy.


Recruitment information / eligibility

Status Withdrawn
Enrollment 0
Est. completion date October 2015
Est. primary completion date October 2015
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Age over 18 years old

- Undergoing unilateral primary total knee arthroplasty

Exclusion Criteria:

- Revision total knee arthroplasty

- Bilateral total knee arthroplasty

- Prior allergy or adverse reaction to local anesthetic

- Hepatic dysfunction

Study Design


Intervention

Drug:
Bupivacaine Liposome Injection
Intraoperative intracapsular injection of 266mg of bupivacaine liposome injection diluted to 60mL with 0.9% normal saline.
Indwelling femoral nerve block
Femoral nerve block delivered via indwelling femoral nerve catheter with 0.125% bupivacaine.

Locations

Country Name City State
United States Naval Medical Center San Diego San Diego California

Sponsors (1)

Lead Sponsor Collaborator
United States Naval Medical Center, San Diego

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Visual Analog Pain Scale 10cm VAS scale completed by the patient at set intervals postoperatively 0-3 months
Primary Oral and Intravenous Opioid Consumption Oral and intravenous opioid use calculated in terms of morphine equivalents 0-5 days (during hospitalization)
Primary Hospital for Special Surgery (HSS) Knee Scores Standardized functional clinical score for knee symptoms 0-3 months
Secondary Length of Hospital Stay 0-5 days
Secondary Distance ambulated with physical therapy 0-5 days (during hospitalization)
Secondary Time to straight leg raise with physical therapy Time to return of quadriceps function 0-5 days (during hospitalization)
Secondary Postoperative range of motion Knee range of motion measure by physical therapy and in clinic 0-3 months
Secondary Postoperative complication rate All intervention related complications for each arm of the study 0-3 months
Secondary Plasma bupivacaine concentrations Plasma levels of bupivacaine monitored throughout hospital stay 0-5 days (during hospitalization)
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