지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
One of the most common problems with pedicle screw system is pullout of the screw. This study was performed to evaluate the pullout strength and driving torque of newly designed pedicle screws. The design of three type screws were standard pedicle screw, which had single lead threaded and single pitched design (Type A), single pitched and dual lead threaded pedicle screw (Type B), dual pitched and dual lead threaded pedicle screw (Type C), respectively. The tests were performed in accordance with the ASTM standards using polyurethane (PU) foam blocks. There was no significant difference in pullout strength among three types of screw. Type B and Type C exhibited higher insertion torque and removal torque than Type A, respectively (p<0.05). Pedicle screws newly developed with dual pitched and dual lead threaded design showed higher driving torque without decrease in pullout strength compared to the standard pedicle screw and could be inserted more rapidly with the same number of revolutions.
목차
등록된 정보가 없습니다.
참고문헌 (26)
참고문헌 신청
O. Yaman / 2015 / The comparison of pullout strengths of various pedicle screw designs on synthetic foams and ovine vertebrae / Turk Neurosurg. 25(4):532~538
C.S. Chen / 2005 / Failure analysis of broken pedicle screws on spinal instrumentation / Medical Engineering and Physics 27:487~496
S. Vishnubhotla / 2011 / A titanium expandable pedicle screw improves initial pullout strength as compared with standard pedicle screws / Spine 11:777~781
S. Wan / 2010 / Biomechanical and histological evaluation of an expandable pedicle screw in osteoporotic spine in sheep / Eur Spine 19:2122~2129
B.B. Abshire / 2001 / Characteristics of pullout failure in conical and cylindrical pedicle screws after full insertion and back-out / Spine 1:408~414
C.S. Chen / 2005 / Failure analysis of broken pedicle screws on spinal instrumentation / Medical Engineering and Physics 27:487~496
S. Vishnubhotla / 2011 / A titanium expandable pedicle screw improves initial pullout strength as compared with standard pedicle screws / Spine 11:777~781
S. Wan / 2010 / Biomechanical and histological evaluation of an expandable pedicle screw in osteoporotic spine in sheep / Eur Spine 19:2122~2129
B.B. Abshire / 2001 / Characteristics of pullout failure in conical and cylindrical pedicle screws after full insertion and back-out / Spine 1:408~414
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척추의 해부학적 요소를 고려한 척추경 나사못 디자인의 Pullout 특성 연구
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