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REVISION ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION USING POLYESTER TENDON GRAFT FIXATION DEVICE



Abstract

Aim: The aim of our study was to evaluate the results of the Soffix Mark 1 and Mark 11 hamstring fixation device, placed transtibially with an “over the top” femoral route when applied to revision anterior cruciate ligament (ACL) surgery.

Method and results: Twenty nine ACL revisions performed between 1992 – 2000 were evaluated. Twenty six failed prosthetic ligaments, two failed semitendinosus/ gracilis (STG) and one BTB autografts were revised using hamstring grafts in 26, quadriceps in two, and patella bone tendon bone (BTB) in one patient. Mark 1 and 11 fixation devices were employed. Follow up included clinical examination, KT 2000 arthrometric assessment, Lysholm, Tegner and IKDC scoring. The average follow up time was 50 months ±22.4.

Arthrometric examination showed a mean side to side difference (SSD) of 1.66 mm ±1.5. The mean Lysholm score was 87.2 ±12.5 and 22 patients had a B rating (nearly normal) on IKDC scoring.

The Mark II Soffix group had a mean SSD of 1.23 mm ±1.3, a mean Lysholm score of 85.8 ±14.6 and IKDC B rating in 11/15. The lowest clinical scores were in 4 multiply operated knees but the SSDs were comparable with other groups. The Mark 1 Soffix group had a mean SSD of 2.0 mm ±1.6, Lysholm score of 84.6 ±14.3 and 13/16 had a B rating (IKDC). The smaller SSD in the Mark I Soffix was statistically significant (p< 0.05) when compared with the Mark I device. Multiply operated knees had worse IKDC and Lysholm scores (not statistically significant).

Conclusions: We concluded that a revision technique using the STG Soffix fixation device can restore stability with good functional outcomes following failed primary ACL reconstruction. Multiply re-operated knees had the worst functional results despite restoration of stability.

The abstracts were prepared by Mr Roger Smith. Correspondence should be addressed to him care of the British Orthopaedic Association, Royal College of Surgeons, 35-43 Lincoln’s Inn Fields, London WC2A 3PN.