Insertional torque and pull-out strengths of conical and cylindrical pedicle screws in cadaveric bone

Spine

Volumn 21, Issue 21, 1996, Pages 2429-2434

  Kwok, Amy W L ^a   Finkelstein, Joel A ^a   Woodside, Terry ^a   Hearn, Trevor C ^a   Hu, Richard W ^a  

^a UNIVERSITY OF TORONTO   (Canada)

Author keywords

conical or cylindrical thread profile; insertion torque; pedicle screws; pull out strength

Indexed keywords

AGED; ARTICLE; BIOMECHANICS; BONE DENSITY; BONE MINERAL; BONE SCREW; BONE STRENGTH; HUMAN; HUMAN TISSUE; IMPLANT; NORMAL HUMAN; OSTEOPOROSIS; PRIORITY JOURNAL; TORQUE; VERTEBRA BODY;

AGED; BONE SCREWS; CADAVER; COMPRESSIVE STRENGTH; HUMANS; LUMBAR VERTEBRAE; MATERIALS TESTING; TORQUE;

EID: 0029825385     PISSN: 03622436     EISSN: None     Source Type: Journal    
DOI: 10.1097/00007632-199611010-00004     Document Type: Article

References (14)

1. Bartley MH, Arnold JS, Haslam RK, Jee WS. The relationship of bone strength and bone quantity in health, disease and aging. J Gerontol 1966;21:517-21.
2. Brantley AGU, Mayfield JK, Koeneman JB, Clark KR. The effects of pedicle screw fit: An in-vitro study. Spine 1994; 19(15):1752-8.
3. Carlson GD, Abitbol JJ, Anderson DR, et al. Screw fixation in the Human Sacrum; An in-vitro study of the biomechanics of fixation. Spine 1992;17(Suppl):S196-203.
4. Daftari TK, Horton WC, Hutton WC. Correlations between screw hole preparation, torque of insertions and pull-out strength for spinal screws. J Spinal Disord 1994;7:139-45.
5. Davne SH, Myers SL. Complications of lumbar spinal fusion with transpedicular instrumentation. Spine 1992;17 (Suppl):S184-9.
6. Dickman CA, Fessier RG, MacMillan M, Haid RW. Transpedicular screw-rod fixation of the lumbar spine: Operative technique and outcome in 104 cases. J Neurosurg 1992; 77:860-70.
7. Halawa M, Lee AJC, Ling RSM, Vangala SS. The shear strength of trabecular bone from the femur, and some factors affecting the shear strength of the cement-bone interface. Arch Orthop Trauma Surg 1978;92:19-30.
8. Hearn T, Surowiak JF, Schatzker J. Effects of tapping on the holding strength of cancellous bone screws. Vet Comparative Orthop Trauma 1992;5:10-2.
9. Magerl F. Clinical application on the thoracolumbar junction and the lumbar spine. In: Mears DC, ed. External Skeletal Fixation. Baltimore: Williams and Wilkins, 1983:553-75.
10. Misenhimer GR, Peek RD, Wiltse LL, Rothman SLG, Widell EH Jr. Anatomic analysis of pedicle cortical and cancellous diameter as related to screw size. Spine 1989;14:367-72.
11. Sjöström L, Jacobsson O, Karlström G, Pech P, Rauschning W. CT Analysis of pedicles and screw tracts after implant removal in thoracolumbar fractures. J Spinal Disord 1993;6: 225-31.
12. Willet K, Hearn TC, Cuncins AV. Biomechanical testing of a new design for Schanz pedicle screws. J Orthop Trauma 1993;7:375-80.
13. Yamagata M, Kitahara H, Minami S, et al. Mechanical stability of the pedicle screw fixation systems for the lumbar spine. Spine 1992;17(Suppl):S51-4.
14. Zdeblick TA, Kunz DN, Cooke ME, McCabe R. Pedicle screw pull-out strength - Correlation with insertional torque. Spine 1993;18(12):1673-6.