Theoretical Stress Analysis in Wrist Joint – Neutral Position and Functional Position

A three-dimensional rigid body spring model (3D-RBSM) was used to analyse force distribution through the wrist joint. In the neutral position, 48% of the force was transmitted through the radioscaphoid fossa, 40% through the radiolunate fossa, and 12% through the triangular fibrocartilage complex. In the functional position, the wrist joint was slightly extended, resulting in significantly increased force through the lunate (53%). The lunate appears to bear more load than has been reported previously.

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Application of a Three-Dimensional Computational Wrist Model to Proximal Row Carpectomy

Journal of Biomechanical Engineering ◽

10.1115/1.4029902 ◽

2015 ◽

Vol 137 (6) ◽

Cited By ~ 3

Author(s):

Jennifer S. Wayne ◽

Afsarul Q. Mir

Keyword(s):

Wrist Joint ◽

Three Dimensional ◽

Proximal Row Carpectomy ◽

Clinical Tool ◽

Additional Insight ◽

Bony Anatomy ◽

Muscle Loading ◽

Functional Consequences ◽

Triangular Fibrocartilage ◽

Insight Into

A three-dimensional (3D) computational model of the wrist examined the biomechanical effects of the proximal row carpectomy (PRC), a surgical treatment of certain wrist degenerative conditions but with functional consequences. Model simulations, replicating the 3D bony anatomy, soft tissue restraints, muscle loading, and applied perturbations, demonstrated quantitatively accurate responses for the decreased motions subsequent to the surgical procedure. It also yielded some knowledge of alterations in radiocarpal contact force which likely increase contact pressure as well as additional insight into the importance of the triangular fibrocartilage complex and retinacular/capsular structures for stabilizing the deficient wrist. As better understanding of the wrist joint is achieved, this model could serve as a useful clinical tool.

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Simplified stress analysis on the temporomandibular joint in Class III patients with and without mandibular asymmetry using a rigid body spring model

Orthodontics and Craniofacial Research ◽

10.1111/j.1601-6343.2009.01467.x ◽

2009 ◽

Vol 12 (4) ◽

pp. 312-318 ◽

Cited By ~ 3

Author(s):

K Ueki ◽

N Takeuchi ◽

K Nakagawa ◽

E Yamamoto

Keyword(s):

Rigid Body ◽

Stress Analysis ◽

Temporomandibular Joint ◽

Spring Model ◽

Class Iii ◽

Mandibular Asymmetry

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ANALYSIS OF COMPRESSION FAILURE OF CONCRETE BY THREE DIMENSIONAL RIGID BODY SPRING MODEL

Doboku Gakkai Ronbunshuu E ◽

10.2208/jsceje.64.612 ◽

2008 ◽

Vol 64 (4) ◽

pp. 612-630 ◽

Cited By ~ 20

Author(s):

Yoshihito YAMAMOTO ◽

Hikaru NAKAMURA ◽

Ichiro KURODA ◽

Nobuaki FURUYA

Keyword(s):

Rigid Body ◽

Three Dimensional ◽

Spring Model ◽

Compression Failure

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Theoretical Stress Analysis of Intersecting Cylindrical Shells Subjected to External Forces on Nozzle

Journal of Pressure Vessel Technology ◽

10.1115/1.2138065 ◽

2005 ◽

Vol 128 (1) ◽

pp. 71-83 ◽

Cited By ~ 6

Author(s):

Ming-De Xue ◽

Qing-Hai Du ◽

Dong-Feng Li ◽

Keh-Chih Hwang

Keyword(s):

Cylindrical Shell ◽

Stress Analysis ◽

Branch Pipe ◽

Three Dimensional ◽

Present Solution ◽

Mechanical Models ◽

Applicable Range ◽

External Forces ◽

3D Finite Element Method ◽

Theoretical Stress

The stress analysis based on thin shell theory is presented for a cylindrical shell with a normally intersecting nozzle subjected to three kinds of branch pipe forces, which are tension and two shear forces. The basic mechanical models for the three load cases are presented in order to obtain the solutions independent of the length of the main shell and branch pipe. The applicable range of the present solution is expanded up to d∕D⩽0.8 and λ=d∕DT⩽12 by means of the accurate cylindrical shell equations and continuity conditions and the improved numerical method. The theoretical results are verified by test and three-dimensional (3D) finite element method (FEM) results. The maximum stress for tension force case are in good agreement with WRC Bulletin No. 297 when λ is small. The comparison between the present results and WRC Bulletin No. 107 shows that the latter needs improvement.

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