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General Orthopaedics

4-STRAND HAMSTRING RECONSTRUCTION USING BIO-INTRAFIX AND RIGIDFIX – A RETROSPECTIVE REVIEW

Combined Services Orthopaedic Society (CSOS) - 32nd Meeting



Abstract

The use of a quadrupled hamstring graft in ACL reconstruction is well established. There are many described techniques in securing graft fixation, the optimal method is not yet established. The aim of this study was to review the results of a single surgeon series using the above implants looking at functional outcome for the patient and implant survivorship.

Patients were recruited for the study who had completed 8 months of post-op rehabilitation following primary ACL reconstruction and that had received the same surgical technique using the same implants from one surgical team. Patients undergoing a revision procedure were excluded. All patients received the same post-operative rehabilitation. Those who met the inclusion criteria were contacted via a postal survey using the Lysholm and Tegner questionnaires.

In total 77 patients were eligible for inclusion, consisting of 10 females and 67 males with a mean age of 31 (range 16-56). A 77% survey return rate was achieved with average follow up of 25 months (range 9-44). The mean Lysholm score was 82.1, with 59% ranking their knee as good or excellent. On average patients dropped 1.8 levels on the Tegner activity rating from a pre-injury average of 7.5 to post rehabilitation average of 5.7. There was a 100% survivorship of implants with no revisions undertaken due to implant failure.

The study has shown that this cohort of patients has produced self reported outcomes analogous to findings in the current literature. No obvious problem with implants was observed. It has highlighted the multiple factors associated with the outcome of ACL reconstruction and demonstrates that the quadrupled HT graft using Bio-Intrafix and Rigidfix implants produces short to mid-term functional and activity levels in keeping with the literature standard.