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http://dx.doi.org/10.3795/KSME-B.2013.37.7.703

Development of Hip Joint Mechanical Stem for Minimally Invasive Surgery  

Lee, Sunghyun (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Bae, Ji-Yong (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Jeon, Insu (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.7, 2013 , pp. 703-708 More about this Journal
Abstract
Conventional total hip joint replacement(THR) surgery requires a long incision and long rehabilitation time. The stem used in THR is inserted into the cancellous bone of the femur where it plays the role of the artificial joint. Minimally invasive surgery(MIS) has been devised to reduce muscle damage to patients. In this study, a mechanical stem was developed on the basis of MISto reduce the incision length through the principle of the gear. The mechanical stem consists of six components. A prototypical model for a mechanical stem was fabricated using an acryl-based polymer, and its workability was confirmed. To actualize the mechanical stem, a three-dimensional Bio-CAD modeling technique was applied. The hip joint area based on computed tomography(CT) was reconstructed. The safety of the mechanical stem by applying more load than the weight of a man under virtual surgery environment conditions was confirmed by finite element analysis.
Keywords
Finite Element Analysis; Minimally Invasive Surgery; Mechanical Stem; Total Hip Joint Replacement;
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