Local Anesthetic Infiltration and Infusion for Pain Control After Hip Replacement

The Evaluation of the Efficacy of Local Infiltration Analgesia and Infusion for Total Hip Arthroplasty

The purpose of this study is to examine three different ways to control pain after hip replacement:

1. One time injection of ropivacaine before wound closure
2. One time injection of ropivacaine before wound closure plus slow release of ropivacaine via catheter for 48 hours
3. Standard practice of patient controlled pump

Inclusion Criteria:

• total knee replacement

Exclusion Criteria:

• History of neurological disease, diabetes, pregnancy, allergy to local anesthetic solutions chronic narcotic use ability to consent