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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_X | Pages 83 - 83
1 Apr 2012
Hubbard R Greaves Z Young R NOC Spine research team
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To review our practice of requesting nerve root blocks, to see how effective our therapeutic blocks are and how many of our diagnostic blocks confirm clinical suspicion and help decision making.

Retrospective cohort analysis

120 fluoroscopically guided nerve root blocks were performed between 20/08/2008 and 29/12/2008. There were 100 patients who had pain diary data available, 42 males (mean age 52.02 range 20-76) 58 females (mean age 60.03, range 22-88).

We recorded: clinical diagnosis, reason for block, result of block on a 10 point visual analogue pain diary on days 0, 2, 14 and at review. A successful block was defined as an improvement of at least 2 points. For the diagnostic blocks we also recorded whether the block result influenced surgical decision making.

Block methods will be illustrated in diagram. Results will be displayed graphically and in text. 18 blocks were cervical (1 purely diagnostic, 6 therapeutic, and 10 mixed, 1 data unavailable). 71 blocks were lumbar (1 purely diagnostic, 28 purely therapeutic, and 37 mixed, 5 data unavailable). 28% of all blocks were successful immediately (2 unavailable data) and 22% at two weeks (1 unavailable data). By 3 months the success rate for therapeutic blocks was 26%. Of the blocks done for diagnostic reasons, 86% influenced a clinical decision at the next outpatient appointment.

Our results justify the continuance of this service. Increased care should be taken that patients' outcome data is collected.