Correlation of bone tunnel diameter with quadrupled hamstring graft fixation strength using a biodegradable interference screw |
| |
| Affiliation: | 1. Department of Orthopaedic Surgery, Saeum Hospital, Seoul, Republic of Korea;2. Department of Orthopedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea;1. Department of Orthopaedic Surgery, Saarland University, Homburg (Saar), Germany;2. Department of Trauma–Hand and Reconstructive Surgery, Saarland University, Homburg (Saar), Germany;3. Sporthopaedicum Straubing–Berlin-Regensburg-Munich, Germany;4. Department of Orthopaedic Surgery, Marburg University, Marburg, Germany;5. Department of Orthopaedic an Trauma Surgery, Klinikum Ernst von Bergmann, Potsdam/Bad Belzig, Germany;1. Department of Mechanical Engineering, Kyushu University, Fukuoka 819-0395, Japan;2. The Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;1. The Doctors Clinic, Silverdale, WA, USA;2. Southern California Orthopaedics Institute, Van Nuys, CA, USA;3. Department of Orthopaedics, Orthopaedic Research Laboratory, University of Utah, Salt Lake City, UT, USA;4. Department of Bioengineering, University of Utah, Salt Lake City, UT, USA |
| |
| Abstract: | Purpose: The purpose of this study was to determine whether the ultimate load at failure of a quadrupled hamstring tendon graft (QHT) fixed with a biodegradable interference screw is improved with a more precise match of the bone tunnel diameter to the diameter of the QHT. Type of Study: Biomechanical testing. Methods: In group A, 8 cadaver knees with a mean age of 69.4 years (range, 60 to 76) were used. QHT graft diameters were measured using sleeves in standard 1.0-mm increments, with matching bone tunnels drilled in 1.0-mm increments. In group B, 9 cadaver knees, with a mean age of 66.5 (53 to 81) were used. Grafts were measured using sleeves in 0.5-mm increments and matching bone tunnels in 0.5-mm increments were drilled. In both groups, the QHT grafts were fixed with a biodegradable interference screw (BioScrew, Linvatec, Largo, FL) in both the tibia and the femur. Tendon interference fixation was tested to failure using a material testing device that tensioned the grafts directly in line with the bone tunnels. Bone mineral density was measured using dual photon absorptimetry for the metaphyseal area of the tibias and femora in the area of interference screw fixation. Results: Femoral maximum load at failure significantly improved from 341 N in the 1.0-mm group to 530 N (P <.05) in the 0.5-mm group; the tibial maximum load at failure improved from 221 N to 308 N (P =.35). Conclusions: Fixation strength results of this study suggest that commercially available instrumentation could be improved with sleeves and reamers available in 0.5-mm increments.Arthroscopy: The Journal of Arthroscopic and Related Surgery, Vol 18, No 8 (October), 2002: pp 901–907 |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
