Tibial interference screw fixation in anterior cruciate ligament reconstruction with and without autograft bone augmentation

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
Stuart RoyPeter Dobson

Abstract

Because tibial fixation of soft-tissue grafts in anterior cruciate ligament (ACL) reconstruction is problematic, this study aimed to develop a means of delivering bone graft evenly around tendon autograft and define any mechanical, radiologic, or histologic benefit using an ovine model. A device to deliver bone graft evenly throughout the tibial tunnel was developed. Forty mature sheep underwent simulated quadruple hamstring tendon-ACL reconstruction by use of a bioresorbable interference screw, either with or without bone graft augmentation of the tibial tunnel. Endpoint data were derived at time 0 and after 6 weeks in vivo. Radiostereometric analysis provided quantitation of the translational characteristics; computed tomography evaluated tunnel volume, and measures of yield strength and stiffness were obtained. Sequential fluorochrome administration assessed bone formation, and light microscopy surveyed the biological response. Radiostereometric analysis highlighted differences in the translational characteristics of ACL-deficient knees when compared with intact knees. Reconstructed knees (with or without autograft) showed significantly greater translation when compared with unoperated knees at 6 weeks; autograft bone augmen...Continue Reading

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Citations

Sep 15, 2010·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Camilla HalewoodAndrew A Amis
Jul 23, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Mazda FarshadDominik C Meyer
Mar 22, 2012·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Michael StalderDominik C Meyer
Mar 31, 2012·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·María PradoFrancisco Ezquerro
Jul 14, 2010·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·James H Lubowitz, Gary G Poehling

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