s / International Journal of Surgery 10 (2012) S53–S109 S56 ABSTRACTS 0174: REVIEW OF SINGLE STAGE REVISION ACL RECONSTRUCTION Young-seok Cho, Peter Kempshall, Rhidian Morgan-Jones. Cardiff and Vale Orthopaedic Centre, Cardiff, UK Aim: To review single stage revision ACL reconstruction. Method: Between January 2002 and January 2011, 34 patients were identified as having had revision ACL reconstruction at a single stage under a single surgeon. The case notes were retrospectively reviewed and patients were contacted by telephone interview where patient reported outcome measures were recorded in the form of Tegner Activity Scale, Tegner Lysholm Knee Scoring Scale, Cardiff ACL Satisfaction Index and EQ5D Euroqol. Results: 20 patients were contactable (59%), with the average follow-up of 3.8 years [range 1-10 years]. None of the revisions had failed. The mean Tegner score was 84.4 [range 45-100], which correlated well with the EQ5D Euroqol. One patient had proceeded to TKR at 6 years but the graft was functioning at the time of surgery. Eight of the revisions used bone patella tendon bone (BPTB) as a graft material. Fixation was possible in all but one case where a femoral post and suspensory fixation was required. Tegner score was higher in revisions using hamstrings [n1⁄48, mean 83.4] than BPTB [n1⁄411, mean 82.6]. Conclusions: Single stage revision ACL reconstruction can yield good results, where hamstring and BPTB grafts yield similar results on functional outcome scores. 0178: CAN PATIENTS REMEMBER THEIR PRESENTING SYMPTOMS SIX MONTHS AFTER SURGERY? Rachel L. O'Connell, Liza Osagie, S.Z. Nawaz, Rohit Gupta. Ashford and St Peters NHS Foundation Trust, Surrey, UK Aims: The Oxford Shoulder Score (OSS) is a validated score of shoulder symptoms, little work has explored patients' recollection of pre-operative symptoms. The aim of this study was to determine howwell patients recall pre-operative symptoms. Methods: Fifty patients who underwent shoulder surgery at least 6 months previously and had completed OSS pre-operatively were contacted. Patients were asked to complete the OSS questionnaire in terms of their pre-operative symptoms. Kappa coefficient was used to calculate agreement between pre and post-operative answers. Results: 41 patients completed the questionnaire, mean age was 53 years, 23 males and 19 females. Comparison of pre-operative and recall data on the four questions relating to pain showed ‘poor' agreement for one and ‘moderate' agreement for three (kappa 0.128, 0.454, 0.491, 0.502). Comparison of the eight questions relating to activities of daily living (ADL) showed one ‘poor', four ‘moderate', two ‘fair' and one ‘good' agreement. Pre-operative and post-operative OSS averaged 35.6 and 38 respectively (Paired t-test, p<0.001). Conclusion: There is considerable disagreement between patients' original and recalled scores. Our study demonstrates the limitations of using recalled data to determine pre-operative symptoms when verifying efficacy of shoulder surgery. This illustrates the importance of pre-operative scoring when assessing post-operatively. 0184: DELAY IN DIAGNOSIS OF ACL INJURY: IS IT STILL A PROBLEM? Medhat Alaker, Nicholas Greville Farrar, Stephen Duckett. Leighton