Foot radiographic angle variation as a function of weightbearing magnitude
Weightbearing radiographs are widely used to investigate foot disorders. However, it is unclear how imaging during partial weightbearing affects foot alignment measurements. This study aimed to determine a partial weightbearing threshold that yields consistent measurements of various radiographic an...
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| Veröffentlicht in: | Journal of orthopaedic research 2022-11, Vol.40 (11), p.2620-2625 |
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| creator | Kimura, Tadashi Thorhauer, Eric D. Sangeorzan, Bruce J. Ledoux, William R. |
| description | Weightbearing radiographs are widely used to investigate foot disorders. However, it is unclear how imaging during partial weightbearing affects foot alignment measurements. This study aimed to determine a partial weightbearing threshold that yields consistent measurements of various radiographic angles. Eighteen normal fresh‐frozen cadaveric foot specimens were dissected and prepared for mechanical testing using a custom‐designed, computed tomography‐compatible loading frame. Specimens were placed in a neutral ankle position and scanned in five axial loading conditions (0%, 12.5%, 25%, 37.5%, and 50% bodyweight) using weightbearing computed tomography. (Note 50% bodyweight per foot represents full bodyweight in quiet stance.) The lateral first talometatarsal and calcaneal pitch angles were measured on lateral radiographic projections, and the hallux valgus angle and first−second, fourth−fifth, and first−fifth intermetatarsal angles were measured on axial projection images. The lateral first talometatarsal angle decreased significantly with increased bodyweight loading (p |
| doi_str_mv | 10.1002/jor.25283 |
| format | Article |
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However, it is unclear how imaging during partial weightbearing affects foot alignment measurements. This study aimed to determine a partial weightbearing threshold that yields consistent measurements of various radiographic angles. Eighteen normal fresh‐frozen cadaveric foot specimens were dissected and prepared for mechanical testing using a custom‐designed, computed tomography‐compatible loading frame. Specimens were placed in a neutral ankle position and scanned in five axial loading conditions (0%, 12.5%, 25%, 37.5%, and 50% bodyweight) using weightbearing computed tomography. (Note 50% bodyweight per foot represents full bodyweight in quiet stance.) The lateral first talometatarsal and calcaneal pitch angles were measured on lateral radiographic projections, and the hallux valgus angle and first−second, fourth−fifth, and first−fifth intermetatarsal angles were measured on axial projection images. The lateral first talometatarsal angle decreased significantly with increased bodyweight loading (p < 0.01). Mean significant decreases in the lateral first talometatarsal angle compared to 0% were 6.6° for 12.5%, 7.6° for 25%, 8.8° for 37.5%, and 10.0° for 50% bodyweight loading; 12.5% to 50% was also significant. There was no significant differences between other loading condition pairings or with increased axial load at other angles. The medial longitudinal arch flattened with increasing axial load, resulting in a decreased lateral first talometatarsal angle. However, this radiographic parameter did not change between the 25% and 50% bodyweight conditions, indicating that partial weightbearing imaging (between 12.5% and 25% bodyweight) might be enough to reproduce the sagittal foot alignments observed under full weightbearing conditions in normal feet.</description><identifier>ISSN: 0736-0266</identifier><identifier>EISSN: 1554-527X</identifier><identifier>DOI: 10.1002/jor.25283</identifier><identifier>PMID: 35076121</identifier><language>eng</language><publisher>United States</publisher><subject>cadaver ; foot ; partial weightbearing ; radiographic angle ; weightbearing CT</subject><ispartof>Journal of orthopaedic research, 2022-11, Vol.40 (11), p.2620-2625</ispartof><rights>Published 2022. This article is a U.S. Government work and is in the public domain in the USA.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3253-3607f96d646bad8f2619d5a4db8144b35e90b3b16ef700b56896ae2e1ca0639c3</citedby><cites>FETCH-LOGICAL-c3253-3607f96d646bad8f2619d5a4db8144b35e90b3b16ef700b56896ae2e1ca0639c3</cites><orcidid>0000-0003-4982-7714</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjor.25283$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjor.25283$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,27924,27925,45574,45575,46409,46833</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35076121$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kimura, Tadashi</creatorcontrib><creatorcontrib>Thorhauer, Eric D.</creatorcontrib><creatorcontrib>Sangeorzan, Bruce J.</creatorcontrib><creatorcontrib>Ledoux, William R.</creatorcontrib><title>Foot radiographic angle variation as a function of weightbearing magnitude</title><title>Journal of orthopaedic research</title><addtitle>J Orthop Res</addtitle><description>Weightbearing radiographs are widely used to investigate foot disorders. However, it is unclear how imaging during partial weightbearing affects foot alignment measurements. This study aimed to determine a partial weightbearing threshold that yields consistent measurements of various radiographic angles. Eighteen normal fresh‐frozen cadaveric foot specimens were dissected and prepared for mechanical testing using a custom‐designed, computed tomography‐compatible loading frame. Specimens were placed in a neutral ankle position and scanned in five axial loading conditions (0%, 12.5%, 25%, 37.5%, and 50% bodyweight) using weightbearing computed tomography. (Note 50% bodyweight per foot represents full bodyweight in quiet stance.) The lateral first talometatarsal and calcaneal pitch angles were measured on lateral radiographic projections, and the hallux valgus angle and first−second, fourth−fifth, and first−fifth intermetatarsal angles were measured on axial projection images. The lateral first talometatarsal angle decreased significantly with increased bodyweight loading (p < 0.01). Mean significant decreases in the lateral first talometatarsal angle compared to 0% were 6.6° for 12.5%, 7.6° for 25%, 8.8° for 37.5%, and 10.0° for 50% bodyweight loading; 12.5% to 50% was also significant. There was no significant differences between other loading condition pairings or with increased axial load at other angles. The medial longitudinal arch flattened with increasing axial load, resulting in a decreased lateral first talometatarsal angle. However, this radiographic parameter did not change between the 25% and 50% bodyweight conditions, indicating that partial weightbearing imaging (between 12.5% and 25% bodyweight) might be enough to reproduce the sagittal foot alignments observed under full weightbearing conditions in normal feet.</description><subject>cadaver</subject><subject>foot</subject><subject>partial weightbearing</subject><subject>radiographic angle</subject><subject>weightbearing CT</subject><issn>0736-0266</issn><issn>1554-527X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1kEFLwzAYhoMobk4P_gHJUQ91X5ImbY8ynDoGA1HwFtI27TLaZiatY__euk5vnj4-eHjgfRC6JnBPAOh0Y9095TRmJ2hMOA8DTqOPUzSGiIkAqBAjdOH9BgAiQuNzNGIcIkEoGaPF3NoWO5UbWzq1XZsMq6asNP5SzqjW2AYrjxUuuiY7fLbAO23KdZvqnmhKXKuyMW2X60t0VqjK66vjnaD3-ePb7DlYrp5eZg_LIGOUs4AJiIpE5CIUqcrjggqS5FyFeRqTMEwZ1wmkLCVCFxFAykWcCKWpJpkCwZKMTdDt4N06-9lp38ra-ExXlWq07bykgvaTgbKwR-8GNHPWe6cLuXWmVm4vCcifdLJPJw_pevbmqO3SWud_5G-rHpgOwM5Uev-_SS5Wr4PyG1f8d-4</recordid><startdate>202211</startdate><enddate>202211</enddate><creator>Kimura, Tadashi</creator><creator>Thorhauer, Eric D.</creator><creator>Sangeorzan, Bruce J.</creator><creator>Ledoux, William R.</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-4982-7714</orcidid></search><sort><creationdate>202211</creationdate><title>Foot radiographic angle variation as a function of weightbearing magnitude</title><author>Kimura, Tadashi ; Thorhauer, Eric D. ; Sangeorzan, Bruce J. ; Ledoux, William R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3253-3607f96d646bad8f2619d5a4db8144b35e90b3b16ef700b56896ae2e1ca0639c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>cadaver</topic><topic>foot</topic><topic>partial weightbearing</topic><topic>radiographic angle</topic><topic>weightbearing CT</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kimura, Tadashi</creatorcontrib><creatorcontrib>Thorhauer, Eric D.</creatorcontrib><creatorcontrib>Sangeorzan, Bruce J.</creatorcontrib><creatorcontrib>Ledoux, William R.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of orthopaedic research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kimura, Tadashi</au><au>Thorhauer, Eric D.</au><au>Sangeorzan, Bruce J.</au><au>Ledoux, William R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Foot radiographic angle variation as a function of weightbearing magnitude</atitle><jtitle>Journal of orthopaedic research</jtitle><addtitle>J Orthop Res</addtitle><date>2022-11</date><risdate>2022</risdate><volume>40</volume><issue>11</issue><spage>2620</spage><epage>2625</epage><pages>2620-2625</pages><issn>0736-0266</issn><eissn>1554-527X</eissn><abstract>Weightbearing radiographs are widely used to investigate foot disorders. However, it is unclear how imaging during partial weightbearing affects foot alignment measurements. This study aimed to determine a partial weightbearing threshold that yields consistent measurements of various radiographic angles. Eighteen normal fresh‐frozen cadaveric foot specimens were dissected and prepared for mechanical testing using a custom‐designed, computed tomography‐compatible loading frame. Specimens were placed in a neutral ankle position and scanned in five axial loading conditions (0%, 12.5%, 25%, 37.5%, and 50% bodyweight) using weightbearing computed tomography. (Note 50% bodyweight per foot represents full bodyweight in quiet stance.) The lateral first talometatarsal and calcaneal pitch angles were measured on lateral radiographic projections, and the hallux valgus angle and first−second, fourth−fifth, and first−fifth intermetatarsal angles were measured on axial projection images. The lateral first talometatarsal angle decreased significantly with increased bodyweight loading (p < 0.01). Mean significant decreases in the lateral first talometatarsal angle compared to 0% were 6.6° for 12.5%, 7.6° for 25%, 8.8° for 37.5%, and 10.0° for 50% bodyweight loading; 12.5% to 50% was also significant. There was no significant differences between other loading condition pairings or with increased axial load at other angles. The medial longitudinal arch flattened with increasing axial load, resulting in a decreased lateral first talometatarsal angle. However, this radiographic parameter did not change between the 25% and 50% bodyweight conditions, indicating that partial weightbearing imaging (between 12.5% and 25% bodyweight) might be enough to reproduce the sagittal foot alignments observed under full weightbearing conditions in normal feet.</abstract><cop>United States</cop><pmid>35076121</pmid><doi>10.1002/jor.25283</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-4982-7714</orcidid></addata></record> |
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| ispartof | Journal of orthopaedic research, 2022-11, Vol.40 (11), p.2620-2625 |
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| language | eng |
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| source | Wiley Journals; Wiley Online Library (Open Access Collection) |
| subjects | cadaver foot partial weightbearing radiographic angle weightbearing CT |
| title | Foot radiographic angle variation as a function of weightbearing magnitude |
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