Glenoid implant with new artificial glenoid labrum using polyvinyl alcohol hydrogel in minimizing rocking horse phenomena

Simple item page
dc.contributor.authorAbdul Wahab, Abdul Hadi
dc.date.accessioned2023-08-20T02:00:27Z
dc.date.available2023-08-20T02:00:27Z
dc.date.issued2018
dc.descriptionThesis (PhD. (Biomedical Engineering))
dc.description.abstractThe major concern for long-term results of total shoulder arthroplasty is the loosening of glenoid component due to Rocking Horse Phenomena (RHP). Thus, the aim of this study is to analyse the effect of artificial glenoid labrum in minimizing the RHP. Several finite element (FE) analyses were conducted to analyse the contributions of glenoid implant fixation designs affecting RHP. A 750 N load was applied to three different locations (centre, superior-anterior, superior-posterior). Three dimensional (3D) scapula bone was reconstructed which composed of cortical and cancellous bones where the latter was assigned with orthotropic properties. Parameters such as stress at the components and micromotion at the interfaces which had been associated with RHP were analysed. However, the results obtained shows that, stress at the implant, micromotion at the interfaces, and stress critical volume (SCV) remained high, thus indicating the potential of glenoid component loosening. Therefore, glenoid implant with new artificial glenoid labrum was developed in this study to act as an absorber to the glenoid implant. Freeze-thaw (FT) method was used in developing the artificial glenoid labrum using polyvinyl alcohol (PVA) hydrogel. The results showed, 20% PVA and 10% PVA with three FT cycles represent higher (0.4 MPa) and lower (0.1 MPa) compressive modulus of intact glenoid labrum, respectively. In addition, the crystallinity of the hydrogel decreased from the high-PVA to the low-PVA region. Conversely, the visibility of pores increased as it move from high-PVA to low-PVA region. Compared to the standard implant, glenolabrum implant has reduces 51% of stress at the implant and another reduction of 17% was observed for micromotion at the interfaces. As conclusion, this study showed that the glenolabrum implant could prolong the longevity of glenoid implant by minimizing the risk of RHP
dc.description.sponsorshipFaculty of Biosciences and Medical Engineering
dc.identifier.urihttp://openscience.utm.my/handle/123456789/587
dc.language.isoen
dc.publisherUniversiti Teknologi Malaysia
dc.subjectArtificial shoulder joints
dc.subjectOrthopedic implants
dc.subjectArthroplasty--methods
dc.titleGlenoid implant with new artificial glenoid labrum using polyvinyl alcohol hydrogel in minimizing rocking horse phenomena
dc.typeThesis
dc.typeDataset
Files
Original bundle
Now showing 1 - 5 of 5
Thumbnail Image
Name:
AbdulHadiAbdulWahabPFBME2018_A(1).pdf
Size:
32.29 KB
Format:
Adobe Portable Document Format
Description:
MOULD FOR PVA HYDROGEL (MAIN BODY)
Download
Thumbnail Image
Name:
AbdulHadiAbdulWahabPFBME2018_A(2).pdf
Size:
32.8 KB
Format:
Adobe Portable Document Format
Description:
MOULD FOR PVA HYDROGEL (BOTTOM CAP)
Download
Thumbnail Image
Name:
AbdulHadiAbdulWahabPFBME2018_A(3).pdf
Size:
34.2 KB
Format:
Adobe Portable Document Format
Description:
MOULD FOR PVA HYDROGEL (TOP CAP)
Download
Thumbnail Image
Name:
AbdulHadiAbdulWahabPFBME2018_A(4).pdf
Size:
31.78 KB
Format:
Adobe Portable Document Format
Description:
MOULD FOR PVA HYDROGEL (LONG DIVIDER)
Download
Thumbnail Image
Name:
AbdulHadiAbdulWahabPFBME2018_A(5).pdf
Size:
31.67 KB
Format:
Adobe Portable Document Format
Description:
MOULD FOR PVA HYDROGEL (SHORT DIVIDER)
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
Medical and Health Sciences