Effect of bone graft characteristics on the mechanical behavior of the lumbar spine

被引:26
作者
Zander, T
Rohmann, A
Klöckner, C
Bergmann, G
机构
[1] Free Univ Berlin, Hosp Benjamin Franklin, Biomech Lab, D-12203 Berlin, Germany
[2] Cent Hosp Emil Behring, Dept Orthopaed, D-14165 Berlin, Germany
关键词
biomechanics; lumbar spine; finite element method; bone graft position; intersegmental motion;
D O I
10.1016/S0021-9290(01)00235-4
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
There is little information about the influence of bone graft size, position and elasticity on the mechanical behavior of the lumbar spine. Intersegmental motion, intradiscal pressure and stresses in the lumbar spine were calculated using a three-dimensional, nonlinear finite element model which included an internal spinal fixation device and a bone graft. Cross-sectional area, position, and elastic modulus of the graft were varied in this study. Bone grafts, especially very stiff ones, increase stresses on adjacent endplates. Though larger grafts lead to less contact pressure, it is difficult to judge the quality of different bone graft positions. In general, ventral flexion results in lower maximum contact pressure than lateral bending. There is always little intersegmental rotation in the bridged region compared with that of an intact spine. A larger graft with low stiffness should be favored from a mechanical point of view. Patients should avoid lateral bending of the upper body shortly after surgery. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:491 / 497
页数:7
相关论文
共 14 条
[1]   Estimation of trunk muscle forces using the finite element method and in vivo loads measured by telemeterized internal spinal fixation devices [J].
Calisse, J ;
Rohlmann, A ;
Bergmann, G .
JOURNAL OF BIOMECHANICS, 1999, 32 (07) :727-731
[2]   CANCELLOUS BONE YOUNGS MODULUS VARIATION WITHIN THE VERTEBRAL BODY OF A LIGAMENTOUS LUMBAR SPINE - APPLICATION OF BONE ADAPTIVE REMODELING CONCEPTS [J].
GOEL, VK ;
RAMIREZ, SA ;
KONG, WZ ;
GILBERTSON, LG .
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 1995, 117 (03) :266-271
[3]   INTERLAMINAR SHEAR STRESSES AND LAMINAE SEPARATION IN A DISC - FINITE-ELEMENT ANALYSIS OF THE L3-L4 MOTION SEGMENT SUBJECTED TO AXIAL COMPRESSIVE LOADS [J].
GOEL, VK ;
MONROE, BT ;
GILBERTSON, LG ;
BRINCKMANN, P ;
NAT, R .
SPINE, 1995, 20 (06) :689-698
[4]  
HAYES WC, 1991, BASIC ORTHOPAEDIC BI, P93
[5]   3-DIMENSIONAL GEOMETRICAL AND MECHANICAL MODELING OF THE LUMBAR SPINE [J].
LAVASTE, F ;
SKALLI, W ;
ROBIN, S ;
ROYCAMILLE, R ;
MAZEL, C .
JOURNAL OF BIOMECHANICS, 1992, 25 (10) :1153-1164
[6]   ARTICULAR FACETS OF THE HUMAN SPINE - QUANTITATIVE 3-DIMENSIONAL ANATOMY [J].
PANJABI, MM ;
OXLAND, T ;
TAKATA, K ;
GOEL, V ;
DURANCEAU, J ;
KRAG, M .
SPINE, 1993, 18 (10) :1298-1310
[7]   A follower load increases the load-carrying capacity of the lumbar spine in compression [J].
Patwardhan, AG ;
Havey, RM ;
Meade, KP ;
Lee, B ;
Dunlap, B .
SPINE, 1999, 24 (10) :1003-1009
[8]   Placing a bone graft more posteriorly may reduce the risk of pedicle screw breakage: analysis of an unexpected case of pedicle screw breakage [J].
Rohlmann, A ;
Bergmann, G ;
Graichen, F ;
Mayer, HM .
JOURNAL OF BIOMECHANICS, 1998, 31 (08) :763-767
[9]   Effect of an internal fixator and a bone graft on intersegmental spinal motion and intradiscal pressure in the adjacent regions [J].
Rohlmann, A ;
Neller, S ;
Bergmann, G ;
Graichen, F ;
Claes, L ;
Wilke, HJ .
EUROPEAN SPINE JOURNAL, 2001, 10 (04) :301-308
[10]   Load-bearing and stress analysis of the human spine under a novel wrapping compression loading [J].
Shirazi-Adl, A ;
Parnianpour, M .
CLINICAL BIOMECHANICS, 2000, 15 (10) :718-725