Effects of Stem Mal-alignment in The Primary Stability of Total Hip Arthroplasty / Shahrul Hisyam Marwan ...[et al.]

Marwan, Shahrul Hisyam and Tardan, Giha and Zainal, Muhammad Syafiq and Abdullah, Abdul Halim (2019) Effects of Stem Mal-alignment in The Primary Stability of Total Hip Arthroplasty / Shahrul Hisyam Marwan ...[et al.]. Journal of Mechanical Engineering (JMechE), SI 4 (4). pp. 229-241. ISSN 18235514

Abstract

Total hip arthroplasty is a surgical procedure to reform the hip joint by replacing the joint with femoral components. Issue of stem malalignment at varus and retroversion degree angles during the procedure had influenced the performance of the arthroplasty especially in revision surgery. Thus, the purposes of the study are to develop the finite element models of total hip arthroplasty and to investigate the effects of stem malalignment in the primary stability of the femur and hip prosthesis. Two cases of malalignment stems at varus +3 degree and varus -3 degree were reconstructed while proper aligned or straight stem was set as reference. The static analysis presenting walking and stair climbing activities is conducted using commercial computational design and analysis software. The effects of stem malalignment in the femur are discussed on the resulting stress distributions and total deformation. Higher stress magnitude was predicted in both malalignment cases as compared to the straight case. The malalignment conditions also contribute to larger displacement at the distal end of the prosthesis which can lead to implant loosening.

Metadata

Item Type: Article
Creators:
CreatorsEmail / ID. Num
Marwan, Shahrul HisyamUNSPECIFIED
Tardan, GihaUNSPECIFIED
Zainal, Muhammad SyafiqUNSPECIFIED
Abdullah, Abdul HalimUNSPECIFIED
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > Machine construction (General)
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
Journal: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 18235514
Volume: SI 4
Number: 4
Page Range: pp. 229-241
Item ID: 39184
Uncontrolled Keywords: Total hip arthroplasty, Stem malalignment, Stress distribution, Deformation, Finite element analysis.
URI: http://ir.uitm.edu.my/id/eprint/39184

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