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Design and Verification of a Metaphyseal Filling Stem for Total Hip Arthroplasty Based on Novel Measurements of Proximal Femoral Anatomy
Cementless metaphyseal filling stems rely on fixation in the medial-to-lateral and anterior-to-posterior (AP) planes. The purpose of this preclinical study was to develop Insignia, a new metaphyseal filling system to match the anatomy of the proximal femur, and then compare it to clinically successf...
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Published in: | Arthroplasty today 2024-02, Vol.25, p.101299-101299, Article 101299 |
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description | Cementless metaphyseal filling stems rely on fixation in the medial-to-lateral and anterior-to-posterior (AP) planes. The purpose of this preclinical study was to develop Insignia, a new metaphyseal filling system to match the anatomy of the proximal femur, and then compare it to clinically successful stems in multiple simulations.
In this preclinical study, the geometry of the proximal femur in the AP plane among 1321 healthy subjects was evaluated using computed tomography. This data was then used to design insignia. Preclinical studies were performed to compare the broaching effort required to prepare a canal using this system, assess the reliability of seating heights for the stem, and compare in vitro micromotion testing of the stem under simulated stair climb activity.
The proximal femur decreased approximately 50% in the AP plane spanning 20 mm above the lesser trochanter to 30 mm below the lesser trochanter. Additional bench top testing was performed, and the new stem system was found to demonstrate significantly reduced broaching effort (average 6 vs 29 hits, P-value = .000), reliable seating heights on stem placement, and 70% less proximal micromotion on 10,000-cyclic testing (P < .05) compared to another clinically successful metaphyseal filling stem.
The AP dimension of the proximal femur decreases nearly 50% throughout its length. Metaphyseal filling stems that match the AP anatomy of the proximal femur may require fewer hits during broaching, yield reproducible seating heights, and reduce micromotion on cyclic testing. |
doi_str_mv | 10.1016/j.artd.2023.101299 |
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In this preclinical study, the geometry of the proximal femur in the AP plane among 1321 healthy subjects was evaluated using computed tomography. This data was then used to design insignia. Preclinical studies were performed to compare the broaching effort required to prepare a canal using this system, assess the reliability of seating heights for the stem, and compare in vitro micromotion testing of the stem under simulated stair climb activity.
The proximal femur decreased approximately 50% in the AP plane spanning 20 mm above the lesser trochanter to 30 mm below the lesser trochanter. Additional bench top testing was performed, and the new stem system was found to demonstrate significantly reduced broaching effort (average 6 vs 29 hits, P-value = .000), reliable seating heights on stem placement, and 70% less proximal micromotion on 10,000-cyclic testing (P < .05) compared to another clinically successful metaphyseal filling stem.
The AP dimension of the proximal femur decreases nearly 50% throughout its length. Metaphyseal filling stems that match the AP anatomy of the proximal femur may require fewer hits during broaching, yield reproducible seating heights, and reduce micromotion on cyclic testing.</description><identifier>ISSN: 2352-3441</identifier><identifier>EISSN: 2352-3441</identifier><identifier>DOI: 10.1016/j.artd.2023.101299</identifier><identifier>PMID: 38380157</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Broaching ; Metaphyseal filling stem ; Micromotion ; Original Research ; Proximal femur anatomy ; Total hip arthroplasty</subject><ispartof>Arthroplasty today, 2024-02, Vol.25, p.101299-101299, Article 101299</ispartof><rights>2024</rights><rights>2024 Published by Elsevier Inc. on behalf of The American Association of Hip and Knee Surgeons.</rights><rights>2024 Published by Elsevier Inc. on behalf of The American Association of Hip and Knee Surgeons. 2024</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c473t-688051000dbcd0ba317635ac110f43752c13859abdeb457a8cd4781310e3d8853</cites><orcidid>0000-0002-3124-1558 ; 0000-0002-4713-8336</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10877337/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S2352344123002042$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,3549,27924,27925,45780,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38380157$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Carlson, Victor R.</creatorcontrib><creatorcontrib>Springer, Bryan D.</creatorcontrib><creatorcontrib>Faizan, Ahmad</creatorcontrib><creatorcontrib>Peterson, Joshua</creatorcontrib><creatorcontrib>Imami, Don</creatorcontrib><creatorcontrib>Gililland, Jeremy M.</creatorcontrib><title>Design and Verification of a Metaphyseal Filling Stem for Total Hip Arthroplasty Based on Novel Measurements of Proximal Femoral Anatomy</title><title>Arthroplasty today</title><addtitle>Arthroplast Today</addtitle><description>Cementless metaphyseal filling stems rely on fixation in the medial-to-lateral and anterior-to-posterior (AP) planes. The purpose of this preclinical study was to develop Insignia, a new metaphyseal filling system to match the anatomy of the proximal femur, and then compare it to clinically successful stems in multiple simulations.
In this preclinical study, the geometry of the proximal femur in the AP plane among 1321 healthy subjects was evaluated using computed tomography. This data was then used to design insignia. Preclinical studies were performed to compare the broaching effort required to prepare a canal using this system, assess the reliability of seating heights for the stem, and compare in vitro micromotion testing of the stem under simulated stair climb activity.
The proximal femur decreased approximately 50% in the AP plane spanning 20 mm above the lesser trochanter to 30 mm below the lesser trochanter. Additional bench top testing was performed, and the new stem system was found to demonstrate significantly reduced broaching effort (average 6 vs 29 hits, P-value = .000), reliable seating heights on stem placement, and 70% less proximal micromotion on 10,000-cyclic testing (P < .05) compared to another clinically successful metaphyseal filling stem.
The AP dimension of the proximal femur decreases nearly 50% throughout its length. Metaphyseal filling stems that match the AP anatomy of the proximal femur may require fewer hits during broaching, yield reproducible seating heights, and reduce micromotion on cyclic testing.</description><subject>Broaching</subject><subject>Metaphyseal filling stem</subject><subject>Micromotion</subject><subject>Original Research</subject><subject>Proximal femur anatomy</subject><subject>Total hip arthroplasty</subject><issn>2352-3441</issn><issn>2352-3441</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNp9kstu1DAUhiMEolXpC7BAXrKZwbfEjoSEhkJppXKRKGwtxz6Z8SiJU9szYt6gj12HlKrdsDrW8X--c9FfFK8JXhJMqnfbpQ7JLimmbErQun5WHFNW0gXjnDx_9D4qTmPcYpyrMOaEviyOmGQSk1IcF7efILr1gPRg0W8IrnVGJ-cH5Fuk0VdIetwcIugOnbuuc8Ma_UzQo9YHdO1TTl-4Ea1C2gQ_djqmA_qoI1iUCd_8HrqM0HEXoIchxQn6I_g_rp940PuQ42rQyfeHV8WLVncRTu_jSfHr_PP12cXi6vuXy7PV1cJwwdKikhKXJC9jG2NxoxkRFSu1IQS3nImSGsJkWevGQsNLoaWxXEjCCAZmpSzZSXE5c63XWzWGPEs4KK-d-pvwYa3yYZ3pQJWgKysNr0XLuJRCk8ZyykUNrawZqzLrw8wad00P1uQd80ZPoE9_BrdRa79XBEshGBOZ8PaeEPzNDmJSvYsGuk4P4HdR0ZrWJatz1yyls9QEH2OA9qEPwWqyhNpOk1s1WULNlshFbx5P-FDyzwBZ8H4WQL753kFQ0TgYDFgXwKR8FPc__h1DpMg2</recordid><startdate>20240201</startdate><enddate>20240201</enddate><creator>Carlson, Victor R.</creator><creator>Springer, Bryan D.</creator><creator>Faizan, Ahmad</creator><creator>Peterson, Joshua</creator><creator>Imami, Don</creator><creator>Gililland, Jeremy M.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-3124-1558</orcidid><orcidid>https://orcid.org/0000-0002-4713-8336</orcidid></search><sort><creationdate>20240201</creationdate><title>Design and Verification of a Metaphyseal Filling Stem for Total Hip Arthroplasty Based on Novel Measurements of Proximal Femoral Anatomy</title><author>Carlson, Victor R. ; Springer, Bryan D. ; Faizan, Ahmad ; Peterson, Joshua ; Imami, Don ; Gililland, Jeremy M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c473t-688051000dbcd0ba317635ac110f43752c13859abdeb457a8cd4781310e3d8853</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Broaching</topic><topic>Metaphyseal filling stem</topic><topic>Micromotion</topic><topic>Original Research</topic><topic>Proximal femur anatomy</topic><topic>Total hip arthroplasty</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Carlson, Victor R.</creatorcontrib><creatorcontrib>Springer, Bryan D.</creatorcontrib><creatorcontrib>Faizan, Ahmad</creatorcontrib><creatorcontrib>Peterson, Joshua</creatorcontrib><creatorcontrib>Imami, Don</creatorcontrib><creatorcontrib>Gililland, Jeremy M.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Arthroplasty today</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Carlson, Victor R.</au><au>Springer, Bryan D.</au><au>Faizan, Ahmad</au><au>Peterson, Joshua</au><au>Imami, Don</au><au>Gililland, Jeremy M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Design and Verification of a Metaphyseal Filling Stem for Total Hip Arthroplasty Based on Novel Measurements of Proximal Femoral Anatomy</atitle><jtitle>Arthroplasty today</jtitle><addtitle>Arthroplast Today</addtitle><date>2024-02-01</date><risdate>2024</risdate><volume>25</volume><spage>101299</spage><epage>101299</epage><pages>101299-101299</pages><artnum>101299</artnum><issn>2352-3441</issn><eissn>2352-3441</eissn><abstract>Cementless metaphyseal filling stems rely on fixation in the medial-to-lateral and anterior-to-posterior (AP) planes. The purpose of this preclinical study was to develop Insignia, a new metaphyseal filling system to match the anatomy of the proximal femur, and then compare it to clinically successful stems in multiple simulations.
In this preclinical study, the geometry of the proximal femur in the AP plane among 1321 healthy subjects was evaluated using computed tomography. This data was then used to design insignia. Preclinical studies were performed to compare the broaching effort required to prepare a canal using this system, assess the reliability of seating heights for the stem, and compare in vitro micromotion testing of the stem under simulated stair climb activity.
The proximal femur decreased approximately 50% in the AP plane spanning 20 mm above the lesser trochanter to 30 mm below the lesser trochanter. Additional bench top testing was performed, and the new stem system was found to demonstrate significantly reduced broaching effort (average 6 vs 29 hits, P-value = .000), reliable seating heights on stem placement, and 70% less proximal micromotion on 10,000-cyclic testing (P < .05) compared to another clinically successful metaphyseal filling stem.
The AP dimension of the proximal femur decreases nearly 50% throughout its length. Metaphyseal filling stems that match the AP anatomy of the proximal femur may require fewer hits during broaching, yield reproducible seating heights, and reduce micromotion on cyclic testing.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>38380157</pmid><doi>10.1016/j.artd.2023.101299</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-3124-1558</orcidid><orcidid>https://orcid.org/0000-0002-4713-8336</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Broaching Metaphyseal filling stem Micromotion Original Research Proximal femur anatomy Total hip arthroplasty |
title | Design and Verification of a Metaphyseal Filling Stem for Total Hip Arthroplasty Based on Novel Measurements of Proximal Femoral Anatomy |
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