Ultrasound-guided Selective Blockade of the Saphenous and Obturator Nerves Following Total Knee Arthroplasty

Knee Arthroplasty, Total Clinical Trial

Official title: Selective Blocks for Total Knee Arthroplasty

Status Completed

Clinical Trial Summary

The investigators aimed to evaluate the efficacy of selective low volume ultrasound-guided blockades of the saphenous and obturator nerves on dynamic and rest pain 24-hours post-operatively for patients undergoing unilateral primary total knee arthroplasty.

Clinical Trial Description

A femoral nerve block is the recommended strategy in many surgical centers to supplement multimodal analgesic regime following total knee arthroplasty (TKA) (i.e. both for spinal and general anesthesia). However, a femoral nerve block will often result in quadriceps paralysis, and this will increase the risk for the patient to fall as long as the femoral block have effect. Thus, the search for sensory nerve blocks to stop pain after TKA is a very interesting topic. The saphenous nerve is a purely sensory nerve, and the posterior branch of the obturator nerve is a mixed nerve, where the motor component only affects part of the adductor major muscle. ;

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

• Knee Arthroplasty, Total

• NCT number: NCT02465827
• Study type: Interventional
• Source: Bispebjerg Hospital
• Status: Completed
• Phase: Phase 4
• Start date: January 2014
• Completion date: March 2015