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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIX | Pages 45 - 45
1 Jul 2012
Baker JF Solayar GN Byrne DP Moran R Mulhall KJ
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The aim of this study was to compare the efficacy of a hyaluronic acid (HA) supplement and a local anaesthetic (Bupivacaine) at providing early and short-term post-operative anagesic control following knee arthroscopy.

Patients were randomised to receive either 10mls of 0.5% Bupivacaine or 10mls of HA into the joint immediately after completion of surgery. WOMAC and Tegner-Lysholm scores were obtained at baseline then at 1, 2, and 6-weeks post surgery. VAS pain scores were obtained at baseline; 1 and 24-hours; and 1, 2 and 6 weeks following surgery.

49 patients received intra-articular Bupivacaine and 49 HA. There was no statistical difference in any of the outcome measures (WOMAC, Tegner-Lysholm, VAS pain scores) at any time point between the groups overall. Patients with grade III-IV chondral defects that received HA reported significantly lower VAS pain scores at rest and movement at all time points.

Use of Bupivacaine and HA intra-articular injection results in equivalent analgesic control in the immediate post-operative period and first six-weeks following surgery when administered immediately at the end of knee arthroscopy. Utilizing HA following knee arthroscopy does not sacrifice analgesic control and minimises exposure to chondrotoxic agents. Selective use of HA may improve pain-control in those with advanced chondral defects.