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Conference Paper: Screw Malalignment May Explain Cord Rupture in Vertebral Body Tethering: A Finite Element Analysis
| Title | Screw Malalignment May Explain Cord Rupture in Vertebral Body Tethering: A Finite Element Analysis |
|---|---|
| Authors | |
| Issue Date | 2021 |
| Publisher | Scoliosis Research Society |
| Citation | 2021 Scoliosis Research Society 56th Annual Meeting, St. Louis, Missouri, USA, 22-25 September 2021 How to Cite? |
| Abstract | VBT cords are made of very strong Polymer fibers and should be
able to withstand correction tension forces. However, incidents
of cord breakage have been reported near the vertebral screws.
In this study, we investigated the effect of screw malalignment
contact stresses and their effect on cord durability using finite
element method. Our analysis showed that the larger the
malalignment the proportionally higher the contact stresses,
thus, the shorter the lifespan of the cord. |
| Description | E-Poster no. 207 |
| Persistent Identifier | http://hdl.handle.net/10722/311299 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Nafo, WAO | - |
| dc.contributor.author | Kwan, KYH | - |
| dc.contributor.author | Cheung, JPY | - |
| dc.contributor.author | Cheung, KMC | - |
| dc.date.accessioned | 2022-03-21T08:47:43Z | - |
| dc.date.available | 2022-03-21T08:47:43Z | - |
| dc.date.issued | 2021 | - |
| dc.identifier.citation | 2021 Scoliosis Research Society 56th Annual Meeting, St. Louis, Missouri, USA, 22-25 September 2021 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/311299 | - |
| dc.description | E-Poster no. 207 | - |
| dc.description.abstract | VBT cords are made of very strong Polymer fibers and should be able to withstand correction tension forces. However, incidents of cord breakage have been reported near the vertebral screws. In this study, we investigated the effect of screw malalignment contact stresses and their effect on cord durability using finite element method. Our analysis showed that the larger the malalignment the proportionally higher the contact stresses, thus, the shorter the lifespan of the cord. | - |
| dc.language | eng | - |
| dc.publisher | Scoliosis Research Society | - |
| dc.relation.ispartof | 2021 Scoliosis Research Society Annual Meeting | - |
| dc.title | Screw Malalignment May Explain Cord Rupture in Vertebral Body Tethering: A Finite Element Analysis | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Kwan, KYH: kyhkwan@hku.hk | - |
| dc.identifier.email | Cheung, JPY: cheungjp@hku.hk | - |
| dc.identifier.email | Cheung, KMC: cheungmc@hku.hk | - |
| dc.identifier.authority | Kwan, KYH=rp02014 | - |
| dc.identifier.authority | Cheung, JPY=rp01685 | - |
| dc.identifier.authority | Cheung, KMC=rp00387 | - |
| dc.identifier.hkuros | 332170 | - |