No difference in the graft shift between a round and a rounded rectangular femoral tunnel for anterior cruciate ligament reconstruction: an experimental study

Archives of Orthopaedic and Trauma Surgery
Yasushi TakataHiroyuki Tsuchiya

Abstract

We developed a novel technique of creating a rounded rectangular femoral bone tunnel for anatomical, single-bundle, autologous hamstring tendon anterior cruciate ligament (ACL) reconstruction. Although this tunnel has many advantages, its non-circular shape has raised concerns regarding excessive graft shift within the bone tunnel. This study aimed to compare the graft shift between round and rounded rectangular tunnels using a graft diameter tester for simulating the femoral bone tunnel. Seven semitendinosus tendon grafts harvested from fresh-frozen cadavers were prepared by removing all excess soft tissue. The two ends of a double-fold hamstring tendon were sutured using a baseball stitch and then looped over a TightRope (Arthrex Co., Ltd., Naples, Florida, USA) to make a fourfold graft. The diameter of the graft was standardized to 8 mm using a round graft diameter tester. A round and an original rounded rectangular graft diameter tester were used for simulating the respective femoral bone tunnels. The graft was inserted into the tunnel, with the TightRope positioned on the outside of the tunnel. The distal end of the graft was tensioned to 40 N at an angle of 75° to reproduce the most severe graft bending angle. Digital pho...Continue Reading

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Oct 14, 2016·Journal of Experimental Orthopaedics·Takeshi OshimaHiroyuki Tsuchiya

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Citations

Jan 5, 2021·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Seong Hwan KimYoung-Bok Jung
Jan 9, 2021·BMC Musculoskeletal Disorders·Junsuke NakaseHiroyuki Tsuchiya

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