Background: Various nerve blocks using local anaesthetic agents have been used in order to reduce pain after hip fracture.
Objectives: To determine the effects of nerve blocks (inserted either pre-operatively, operatively or post-operatively) as part of the treatment for a hip fracture.
Search strategy: The Cochrane Musculoskeletal Injuries Group specialised trials register, MEDLINE, and bibliographies of trial reports were searched. Date of the most recent search: October 2000.
Selection criteria: Randomised and quasi-randomised trials involving the use of nerve blocks as part of the care of a hip fracture patient.
Data collection and analysis: Two reviewers independently assessed trial quality, by use of a nine item scale, and extracted data. Wherever appropriate, results of outcome measures were pooled.
Main results: Seven randomised or quasi-randomised trials involving 269 patients were included. Two trials related to insertion of a nerve block pre-operatively and the remaining five to peri-operative insertion. Nerve blocks resulted in a reduction of the quantity of parenteral or oral analgesia administered to control pain from the fracture/operation or during surgery and a reduction in reported pain levels. It was not possible to demonstrate if this reduction in analgesia use was associated with any other clinical benefit.
Reviewer's conclusions: Because of the small number of patients included in this review and the differing type of nerve blocks and timing of insertion, it is not possible to determine if nerve blocks confer any significant benefit when compared with other analgesic methods as part of the treatment of a hip fracture. Further trials with larger numbers of patients and full reporting of clinical outcomes would be justified.