TY - JOUR
T1 - Comparison of failure strength between metallic and absorbable interference screws
T2 - Influence of insertion torque, tunnel-bone block gap, bone mineral density, and interference
AU - Pena, Fernando A
AU - Grøntvedt, Torbjørn
AU - Brown, Greg A.
AU - Aune, Arne K.
AU - Engebretsen, Lars
PY - 1996/1/1
Y1 - 1996/1/1
N2 - Because of the good initial fixation strength of interference screws used in anterior cruciate ligament reconstruction, metal interference screws have become the standard method for fixation of bone-patellar tendon-bone grafts. To avoid some of the complications with metal screws, a bioabsorbable interference screw was developed. Data on fixation strength in older human cadavers indicate a similar failure strength between bioabsorbable and metal screws. We studied the failure mechanisms, insertion torques, and fixation strengths of absorbable and metal interference screws in cadaveric knees from young and middle-aged donors. With identical gap and screw size, the mean insertion torque for the metal screws (mean, 1.5 N-m; SD, 0.8) was significantly higher than for the absorbable screws (mean, 0.3 N-m; SD, 0.19). The mean failure load for the metal screws (mean 640 N; SD, 201) was also significantly higher than for the absorbable screws (mean, 418 N; SD, 118).
AB - Because of the good initial fixation strength of interference screws used in anterior cruciate ligament reconstruction, metal interference screws have become the standard method for fixation of bone-patellar tendon-bone grafts. To avoid some of the complications with metal screws, a bioabsorbable interference screw was developed. Data on fixation strength in older human cadavers indicate a similar failure strength between bioabsorbable and metal screws. We studied the failure mechanisms, insertion torques, and fixation strengths of absorbable and metal interference screws in cadaveric knees from young and middle-aged donors. With identical gap and screw size, the mean insertion torque for the metal screws (mean, 1.5 N-m; SD, 0.8) was significantly higher than for the absorbable screws (mean, 0.3 N-m; SD, 0.19). The mean failure load for the metal screws (mean 640 N; SD, 201) was also significantly higher than for the absorbable screws (mean, 418 N; SD, 118).
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U2 - 10.1177/036354659602400314
DO - 10.1177/036354659602400314
M3 - Article
C2 - 8734884
AN - SCOPUS:0029916205
SN - 0363-5465
VL - 24
SP - 329
EP - 334
JO - American Journal of Sports Medicine
JF - American Journal of Sports Medicine
IS - 3
ER -