Local Infiltration Analgesia Following Unicompartmental Knee Arthroplasty

Postoperative Pain Clinical Trial

Official title:

Local Infiltration Analgesia (LIA) With Ropivacaine, Ketorolac and Epinephrine Intra- and Postoperatively in Unicompartmental Knee Arthroplasty

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00653926
• Other study ID #: RAK-mini
• Status: Completed
• Phase: N/A
• First received: April 2, 2008
• Last updated: April 4, 2008
• Start date: September 2005
• Est. completion date: September 2007

Study information

• Verified date: April 2008
• Source: University Hospital Orebro
• Contact: n/a
• Is FDA regulated: No
• Health authority: Sweden: Regional Ethical Review Board
• Study type: Interventional

Clinical Trial Summary

The primary aim of this study is to evaluate if intra- and postoperative administration of ropivacaine, ketorolac and epinephrine into the operating field would affect hospital stay. Secondary end-points are morphine consumption, pain intensity and side effects. In an attempt to assess the safety of this technique, knee function and patient satisfaction scores are assessed up to 6 months after surgery.

Description:

Postoperative pain is often severe following knee arthroplasty. Recently, a local infiltration analgesia (LIA) technique was developed by Drs Kerr and Kohan in Sydney, Australia. With this LIA-technique, a long-acting local anesthetic (ropivacaine), a nonsteroidal anti-inflammatory drug (ketorolac), and epinephrine are infiltrated intraoperatively and via an intraarticular catheter postoperatively.

The primary aim of this study is to evaluate if intra- and postoperative administration of ropivacaine, ketorolac and epinephrine into the operating field would affect hospital stay. Secondary end-points were morphine consumption, pain intensity and side effects. In an attempt to assess the safety of this technique, knee function and patient satisfaction scores were assessed up to 6 months after surgery.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 40
• Est. completion date: September 2007
• Est. primary completion date: March 2007
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 20 Years to 80 Years

Eligibility

Inclusion Criteria:

• Patients scheduled for unicompartmental knee arthroplasty

• Aged 20-80 yrs.

• ASA physical status I-III and mobility indicating normal postoperative mobilization

Exclusion Criteria:

• Known allergy or intolerance to one of the study drugs

• Serious liver-, heart- or renal decease

• Rheumatoid arthritis

• Chronic pain or bleeding disorder

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Pain, Postoperative
• Postoperative Pain

Intervention

Drug:
• ropivacaine, ketorelac and epinephrine
In Group A, 200 mg ropivicaine, 30 mg ketorelac and 0.5 mg epinephrine (total volume 106 ml) are infiltrated by the surgeon into the soft tissues peri-articularly during the operation in the following way: Before inserting the components, 20-30 ml are injected into the posterior capsule and before closure of the wound the rest is injected into the capsule incision, the synovium, the ligament and the subcutaneous tissue After 21 postoperative hours in Group A, 150 mg ropivicaine, 30 mg ketorelac and 0.1 mg epinephrine, total volume 22 ml, are injected intraarticularly via the catheter.
• saline
In Group P (placebo) no injections were given intaoperatively. All patients had a tunnelled intra-articular multihole 20-G catheter placed at the end of the operation by the surgeon.After 21 postoperative hours 22 ml of saline was injected intraarticularly via the catheter.

Locations

Country	Name	City	State
Sweden	Dept. of Orthopedic Surgery and Anesthesia and Intensive Care	Orebro

Sponsors (1)

Lead Sponsor	Collaborator
University Hospital Orebro

Country where clinical trial is conducted

Sweden, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The primary aim of this study was to evaluate if intra- and postoperative administration of ropivacaine, ketorolac and epinephrine into the operating field would affect hospital stay.		April, 2007	No
Secondary	Secondary end-points were morphine consumption, pain intensity and side effects. In an attempt to assess the safety of this technique, knee function and patient satisfaction scores were assessed up to 6 months after surgery.		September, 2007	Yes