TY - JOUR
T1 - Biomechanical comparison between BioScrew and titanium alloy interference screws for bone-patellar tendon-bone graft fixation in anterior cruciate ligament reconstruction
AU - Caborn, David N.M.
AU - Urban, William P.
AU - Johnson, Darren L.
AU - Nyland, John
AU - Pienkowski, David
PY - 1997/4
Y1 - 1997/4
N2 - This investigation compared the maximum load at failure of BioScrew (Linvatec Corp, Largo, FL) and titanium alloy interference screw femoral fixation using a human cadaveric model that approximated the anatomical orientation and physiological strain rate of in vivo bone-patellar tendon- bone (BPTB) graft loading following anterior cruciate ligament reconstruction. Eighteen fresh-frozen human BPTB allografts (10-mm wide, 10- mm thick, 25-mm long bone plugs) with either BioScrew or titanium alloy (Ti 6Al4V) screw (7 x 25 mm) fixation were compared for maximum load at failure at a strain rate of 20 mm/minute. Nine cadaver femurs with bone mineral densities of 0.88 ± 0.18 g/cm2 (anterior/posterior) and 1.3 ± 0.24 g/cm2 (lateral) received the allografts. No statistical differences were observed in maximum load at failure (P = .95) or failure mode (P = .11) between specimens fixed with either screw type. When biomechanically tested with anatomic orientation and at functionally relevant strain rates, the BioScrew provided maximum load at failure equal to a titanium alloy screw.
AB - This investigation compared the maximum load at failure of BioScrew (Linvatec Corp, Largo, FL) and titanium alloy interference screw femoral fixation using a human cadaveric model that approximated the anatomical orientation and physiological strain rate of in vivo bone-patellar tendon- bone (BPTB) graft loading following anterior cruciate ligament reconstruction. Eighteen fresh-frozen human BPTB allografts (10-mm wide, 10- mm thick, 25-mm long bone plugs) with either BioScrew or titanium alloy (Ti 6Al4V) screw (7 x 25 mm) fixation were compared for maximum load at failure at a strain rate of 20 mm/minute. Nine cadaver femurs with bone mineral densities of 0.88 ± 0.18 g/cm2 (anterior/posterior) and 1.3 ± 0.24 g/cm2 (lateral) received the allografts. No statistical differences were observed in maximum load at failure (P = .95) or failure mode (P = .11) between specimens fixed with either screw type. When biomechanically tested with anatomic orientation and at functionally relevant strain rates, the BioScrew provided maximum load at failure equal to a titanium alloy screw.
KW - Anterior cruciate ligament reconstruction
KW - Graft fixation
KW - Interference screw
UR - http://www.scopus.com/inward/record.url?scp=0030967485&partnerID=8YFLogxK
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U2 - 10.1016/S0749-8063(97)90159-6
DO - 10.1016/S0749-8063(97)90159-6
M3 - Article
C2 - 9127082
AN - SCOPUS:0030967485
SN - 0749-8063
VL - 13
SP - 229
EP - 232
JO - Arthroscopy
JF - Arthroscopy
IS - 2
ER -