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- Publisher Website: 10.1302/2046-3758.102.BJR-2020-0072.R2
- Scopus: eid_2-s2.0-85101223572
- PMID: 33522293
- WOS: WOS:000624293500002
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Article: Can barb thread design improve the pullout strength of bone screws?
Title | Can barb thread design improve the pullout strength of bone screws? |
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Authors | |
Keywords | Pullout strength Buttress thread Barb thread Reverse buttress thread Biomechanical study |
Issue Date | 2021 |
Publisher | British Editorial Society of Bone and Joint Surgery: Open Access. The Journal's web site is located at http://www.bjr.boneandjoint.org.uk/ |
Citation | Bone & Joint Research, 2021, v. 10 n. 2, p. 105-112 How to Cite? |
Abstract | Aims:
To draw a comparison of the pullout strengths of buttress thread, barb thread, and reverse buttress thread bone screws.
Methods:
Buttress thread, barb thread, and reverse buttress thread bone screws were inserted into synthetic cancellous bone blocks. Five screw-block constructs per group were tested to failure in an axial pullout test. The pullout strengths were calculated and compared. A finite element analysis (FEA) was performed to explore the underlying failure mechanisms. FEA models of the three different screw-bone constructs were developed. A pullout force of 250 N was applied to the screw head with a fixed bone model. The compressive and tensile strain contours of the midsagittal plane of the three bone models were plotted and compared.
Results:
The barb thread demonstrated the lowest pullout strength (mean 176.16 N (SD 3.10)) among the three thread types. It formed a considerably larger region with high tensile strains and a slightly smaller region with high compressive strains within the surrounding bone structure. The reverse buttress thread demonstrated the highest pullout strength (mean 254.69 N (SD 4.15)) among the three types of thread. It formed a considerably larger region with high compressive strains and a slightly smaller region with high tensile strains within the surrounding bone structure.
Conclusion:
Bone screws with a reverse buttress thread design will significantly increase the pullout strength. |
Persistent Identifier | http://hdl.handle.net/10722/305864 |
ISSN | 2023 Impact Factor: 4.7 2023 SCImago Journal Rankings: 1.372 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Feng, X | - |
dc.contributor.author | Qi, W | - |
dc.contributor.author | Fang, CX | - |
dc.contributor.author | Lu, WW | - |
dc.contributor.author | Leung, FKL | - |
dc.contributor.author | Chen, B | - |
dc.date.accessioned | 2021-10-20T10:15:25Z | - |
dc.date.available | 2021-10-20T10:15:25Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Bone & Joint Research, 2021, v. 10 n. 2, p. 105-112 | - |
dc.identifier.issn | 2046-3758 | - |
dc.identifier.uri | http://hdl.handle.net/10722/305864 | - |
dc.description.abstract | Aims: To draw a comparison of the pullout strengths of buttress thread, barb thread, and reverse buttress thread bone screws. Methods: Buttress thread, barb thread, and reverse buttress thread bone screws were inserted into synthetic cancellous bone blocks. Five screw-block constructs per group were tested to failure in an axial pullout test. The pullout strengths were calculated and compared. A finite element analysis (FEA) was performed to explore the underlying failure mechanisms. FEA models of the three different screw-bone constructs were developed. A pullout force of 250 N was applied to the screw head with a fixed bone model. The compressive and tensile strain contours of the midsagittal plane of the three bone models were plotted and compared. Results: The barb thread demonstrated the lowest pullout strength (mean 176.16 N (SD 3.10)) among the three thread types. It formed a considerably larger region with high tensile strains and a slightly smaller region with high compressive strains within the surrounding bone structure. The reverse buttress thread demonstrated the highest pullout strength (mean 254.69 N (SD 4.15)) among the three types of thread. It formed a considerably larger region with high compressive strains and a slightly smaller region with high tensile strains within the surrounding bone structure. Conclusion: Bone screws with a reverse buttress thread design will significantly increase the pullout strength. | - |
dc.language | eng | - |
dc.publisher | British Editorial Society of Bone and Joint Surgery: Open Access. The Journal's web site is located at http://www.bjr.boneandjoint.org.uk/ | - |
dc.relation.ispartof | Bone & Joint Research | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Pullout strength | - |
dc.subject | Buttress thread | - |
dc.subject | Barb thread | - |
dc.subject | Reverse buttress thread | - |
dc.subject | Biomechanical study | - |
dc.title | Can barb thread design improve the pullout strength of bone screws? | - |
dc.type | Article | - |
dc.identifier.email | Fang, CX: cfang@hku.hk | - |
dc.identifier.email | Lu, WW: wwlu@hku.hk | - |
dc.identifier.email | Leung, FKL: klleunga@hkucc.hku.hk | - |
dc.identifier.authority | Fang, CX=rp02016 | - |
dc.identifier.authority | Lu, WW=rp00411 | - |
dc.identifier.authority | Leung, FKL=rp00297 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1302/2046-3758.102.BJR-2020-0072.R2 | - |
dc.identifier.pmid | 33522293 | - |
dc.identifier.pmcid | PMC7937542 | - |
dc.identifier.scopus | eid_2-s2.0-85101223572 | - |
dc.identifier.hkuros | 327685 | - |
dc.identifier.volume | 10 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 105 | - |
dc.identifier.epage | 112 | - |
dc.identifier.isi | WOS:000624293500002 | - |
dc.publisher.place | United Kingdom | - |