ARE HIP-FRACTURES CAUSED BY FALLING AND BREAKING OR BREAKING AND FALLING - PHOTOELASTIC STRESS-ANALYSIS

被引:23
作者
COTTON, DWK
WHITEHEAD, CL
VYAS, S
COOPER, C
PATTERSON, EA
机构
[1] UNIV SHEFFIELD, DEPT MECH & PROC ENGN, SHEFFIELD, ENGLAND
[2] SOUTHAMPTON GEN HOSP, MRC, EPIDEMIOL UNIT, SOUTHAMPTON, ENGLAND
关键词
FEMORAL FRACTURES; OSTEOPOROSIS; PHOTOELASTIC; MECHANICAL STRESS;
D O I
10.1016/0379-0738(94)90265-8
中图分类号
DF [法律]; D9 [法律]; R [医药、卫生];
学科分类号
0301 ; 10 ;
摘要
The distribution of stress in the heads of femurs has been assessed using an engineering technique known as photoelastic stress analysis. The aim of the investigation was to locate and evaluate the probable sites of stucture failure in femurs with various axes of loading. The analysis shows that the maximum stress in the upper femur occurs in the cervical region during vertical loading. Lateral loading does not produce significant stress patterns at the sites of extracapsular hip fracture. It is concluded that cervical hip fractures in individuals suffering from osteoporosis result from a combination of fatigue damage and axial muscular compression, rather than forces generated by a fall. This has significance for the medico-legal interpretation of the cause of death following femoral neck fracture.
引用
收藏
页码:105 / 112
页数:8
相关论文
共 19 条
[1]  
BACKMAN S, 1957, ACTA RADIOL S, V146
[2]   QUANTITATIVE AND COMPARATIVE STRESS-ANALYSIS IN HUMAN FEMUR UNDER 2 DIFFERENT STATIC SITUATIONS BY 3-DIMENSIONAL PHOTOELASTICITY [J].
BIANCHI, R ;
CLERICI, P ;
MIANI, A .
ANATOMICAL RECORD, 1985, 211 (03) :323-328
[3]   OSTEOPOROSIS, FALLS, AND AGE IN FRACTURE OF THE PROXIMAL FEMUR [J].
COOPER, C ;
BARKER, DJP ;
MORRIS, J ;
BRIGGS, RSJ .
BMJ-BRITISH MEDICAL JOURNAL, 1987, 295 (6589) :13-15
[4]  
ELLIOTT KS, 1986, P C FATIGUE CRACK GR, P1
[5]   ROLE OF FATIGUE IN PATHOGENESIS OF SENILE FEMORAL-NECK FRACTURES [J].
FREEMAN, MAR ;
TODD, RC ;
PIRIE, CJ .
JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, 1974, B 56 (04) :698-702
[6]  
Frocht M., 1941, PHOTOELASTICITY, V1
[7]  
FROCHT MM, 1941, PHOTOELASTICITY, V2
[8]   ASSESSMENT OF OSTEOPENIA AT AUTOPSY [J].
HARRIS, SC ;
COTTON, DWK ;
STEPHENSON, TJ ;
HOWAT, AJ .
MEDICINE SCIENCE AND THE LAW, 1991, 31 (01) :15-18
[9]  
HEARN EJ, 1985, MECH MATER, P815
[10]  
HEYWOOD RB, 1952, DESIGNING PHOTOELAST, P113