Ultrasound-guided Blocks for Ambulatory Knee Arthroscopy

• Status: Completed
• Trial end date: 2013-09-01
• Target enrollment: 0
• Participant gender: All

Summary

In this study, we wish to investigate the effect of ultrasound (US) -guided block of the saphenous nerve (SN) and the posterior branch of the obturator nerve (ONP) on postoperative pain and the use of opioids (morphine-like pain medicine) in the first 24 hours following ambulatory knee arthroscopy.

We wish to investigate the analgesic effect of these two blocks compared to placebo (injection of local anesthetic with known pain blocking properties compared with injection of a saline solution), when used as a supplement to conventional oral analgesics.

We hypothesize that patients receiving the active treatment may experience less pain during the first 24 hours after their operation than patients receiving the placebo treatment, and possibly require less opioid analgesics, experience less opioid related side effects and have a higher function level in this period than patients receiving the placebo treatment.

• Phase: Phase 4
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Jens Borglum Neimann
• Treatments: Acetaminophen; Metoclopramide; Morphine; Ondansetron

Criteria

Inclusion Criteria:

• Planned ambulatory knee arthroscopy, except cruciate ligament surgery

• American Society of Anesthesiologists (ASA) class 1-3

Exclusion Criteria:

• Cannot cooperate

• Do not speak or understand Danish

• Daily use of opioid analgesics

• Allergy towards any of the drugs used in the investigation

• Medicine abuse (at the investigators discretion)

• Alcohol abuse, as defined by the National Board of Health

• General anesthesia contraindicated, or the patient wants spinal anesthesia

• Visualization of necessary structures by ultrasound not possible, or block not possible for other technical reasons