A frontal plane model of the lumbar spine subjected to a follower load: Implications for the role of muscles

被引:50
作者
Patwardhan, AG
Meade, KP
Lee, B
机构
[1] Loyola Univ, Med Ctr, Dept Orthopaed Surg & Rehabil, Maywood, IL 60153 USA
[2] Edward Hines Jr Hosp, Dept Vet Affairs, Musculoskeletal Biomech Lab, Hines, IL 60141 USA
[3] IIT, Mech Mat & Aerosp Engn Dept, Chicago, IL 60606 USA
来源
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME | 2001年 / 123卷 / 03期
关键词
lumbar spine; frontal plane; follower load; muscles;
D O I
10.1115/1.1372699
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Compression on the lumbar spine is 1000 N for standing and walking and is higher during lifting. Ex vivo experiments show it buckles under a vertical load of 80-100 N, Conversely, the whole lumbar spine can support physiologic compressive loads without large displacements when the load is applied along afollower path that approximates the tangent to the curve the lumbar spine. This study utilized a two-dimensional beam-column model of the lumbar spine in the frontal plane under gravitational and active muscle loads to address the following question: Can trunk muscle activation cause the path of the internal force resultant to approximate the tangent to the spinal curve and allow the lumbar spine to support compressive loads of physiologic magnitudes? The study identified muscle activation patterns that maintained the lumbar spine model under compressive follower load, resulting in the minimization of internal shear forces and bending moments simultaneously at all lumbar levels, The internal force resultant was compressive, and the lumbar spine model, loaded in compression along the follower load path, supported compressive loads of physiologic magnitudes wih minimal change in curvature in the frontal plane, Trunk muscles may coactivate to generate a follower load path and allow the ligamentous lumbar spine to support physiologic compressive loads.
引用
收藏
页码:212 / 217
页数:6
相关论文
共 20 条
  • [1] POSTURE AND THE COMPRESSIVE STRENGTH OF THE LUMBAR SPINE
    ADAMS, MA
    MCNALLY, DS
    CHINN, H
    DOLAN, P
    [J]. CLINICAL BIOMECHANICS, 1994, 9 (01) : 5 - 14
  • [2] Ashton-Miller James A., 1997, P353
  • [3] EULER STABILITY OF THE HUMAN LIGAMENTOUS LUMBAR SPINE .1. THEORY
    CRISCO, JJ
    PANJABI, MM
    [J]. CLINICAL BIOMECHANICS, 1992, 7 (01) : 19 - 26
  • [4] EULER STABILITY OF THE HUMAN LIGAMENTOUS LUMBAR SPINE .2. EXPERIMENT
    CRISCO, JJ
    PANJABI, MM
    YAMAMOTO, I
    OXLAND, TR
    [J]. CLINICAL BIOMECHANICS, 1992, 7 (01) : 27 - 32
  • [5] THE INTERSEGMENTAL AND MULTISEGMENTAL MUSCLES OF THE LUMBAR SPINE - A BIOMECHANICAL MODEL COMPARING LATERAL STABILIZING POTENTIAL
    CRISCO, JJ
    PANJABI, MM
    [J]. SPINE, 1991, 16 (07) : 793 - 799
  • [6] CAN THE LUMBAR SPINE BE CRUSHED IN HEAVY LIFTING
    HUTTON, WC
    ADAMS, MA
    [J]. SPINE, 1982, 7 (06) : 586 - 590
  • [7] LEE B, 1998, THESIS U ILLINOIS CH
  • [8] MCGILL S, 1990, BIOMECHANICS SPINE C, pCH5
  • [9] NACHEMSON A, 1987, LUMBAR SPINE BACK PA, P191
  • [10] A follower load increases the load-carrying capacity of the lumbar spine in compression
    Patwardhan, AG
    Havey, RM
    Meade, KP
    Lee, B
    Dunlap, B
    [J]. SPINE, 1999, 24 (10) : 1003 - 1009