Are femoroacetabular impingement tomographic angles associated with the histological assessment of labral tears? A cadaveric study
This study sought to investigate the association between tomographic femoroacetabular impingement (FAI) angles and histologically evaluated labral tears. The authors hypothesized that cadavers presenting with cam and pincer morphologies would present a higher prevalence of acetabular labral tears. T...
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| description | This study sought to investigate the association between tomographic femoroacetabular impingement (FAI) angles and histologically evaluated labral tears. The authors hypothesized that cadavers presenting with cam and pincer morphologies would present a higher prevalence of acetabular labral tears.
Twenty fresh cadavers were submitted to computed tomography. Standard FAI angles were measured, including the alpha angle, femoral version, acetabular version, Tonnis angle and center-edge angle. A cam lesion was defined as an alpha angle greater than 50o. A pincer lesion was defined as a center-edge angle greater than 40o, a Tonnis angle less than 0o or acetabular version less than 0o. After dissection, three fragments of each acetabulum, corresponding to the antero-superior, superior and postero-superior acetabular rim, were obtained. These fragments were submitted to routine histological preparation. Each slide was evaluated for possible labral tears. Tears were classified according to their Seldes type.
The mean age of the cadavers was 50.2 years (SD: 7.4; 13 males). Sixteen (80%) of the cadavers had a cam lesion, and eight cadavers (40%) had a pincer lesion. Histologically, 16 (80%) of the cadavers had a labral tear in at least one region. According to the Seldes classification, 60.7% and 28.6% of these labral tears were type 1 and type 2, respectively. A mixed type of labral tear (10.7%), which represented a new form of Seldes tear, was described. Cadavers with a labral tear had significantly higher alpha angles than other cadavers (53.29o vs 49.33o, p = 0.01). Pincer lesions were not associated with labral tears. We found no association between pincer or cam lesions and Seldes classification.
Cadavers presenting with higher alpha angles had a higher incidence of labral tears. No association was found between FAI and Seldes classification.
This study demonstrated a high prevalence of FAI abnormalities associated with histological alterations in a cadaveric sample. Joint damage may be present in the early stages of FAI. |
| doi_str_mv | 10.1371/journal.pone.0199352 |
| format | Article |
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Twenty fresh cadavers were submitted to computed tomography. Standard FAI angles were measured, including the alpha angle, femoral version, acetabular version, Tonnis angle and center-edge angle. A cam lesion was defined as an alpha angle greater than 50o. A pincer lesion was defined as a center-edge angle greater than 40o, a Tonnis angle less than 0o or acetabular version less than 0o. After dissection, three fragments of each acetabulum, corresponding to the antero-superior, superior and postero-superior acetabular rim, were obtained. These fragments were submitted to routine histological preparation. Each slide was evaluated for possible labral tears. Tears were classified according to their Seldes type.
The mean age of the cadavers was 50.2 years (SD: 7.4; 13 males). Sixteen (80%) of the cadavers had a cam lesion, and eight cadavers (40%) had a pincer lesion. Histologically, 16 (80%) of the cadavers had a labral tear in at least one region. According to the Seldes classification, 60.7% and 28.6% of these labral tears were type 1 and type 2, respectively. A mixed type of labral tear (10.7%), which represented a new form of Seldes tear, was described. Cadavers with a labral tear had significantly higher alpha angles than other cadavers (53.29o vs 49.33o, p = 0.01). Pincer lesions were not associated with labral tears. We found no association between pincer or cam lesions and Seldes classification.
Cadavers presenting with higher alpha angles had a higher incidence of labral tears. No association was found between FAI and Seldes classification.
This study demonstrated a high prevalence of FAI abnormalities associated with histological alterations in a cadaveric sample. Joint damage may be present in the early stages of FAI.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0199352</identifier><identifier>PMID: 29928035</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Abnormalities ; Acetabulum ; Arthritis ; Biology and Life Sciences ; Cadaver ; Cadavers ; Cartilage - diagnostic imaging ; Cartilage - pathology ; CAT scans ; Classification ; Computed tomography ; Dissection ; Female ; Femoracetabular Impingement - diagnostic imaging ; Femoracetabular Impingement - pathology ; Femur ; Fragments ; Health aspects ; Hip joint ; Humans ; Impingement ; Incidence angle ; Injuries ; Lesions ; Male ; Males ; Medical imaging ; Medicine and Health Sciences ; Middle Aged ; Morphology ; Osteoarthritis ; Research and Analysis Methods ; Tearing ; Tomography ; Young adults</subject><ispartof>PloS one, 2018-06, Vol.13 (6), p.e0199352-e0199352</ispartof><rights>COPYRIGHT 2018 Public Library of Science</rights><rights>2018 Ejnisman et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2018 Ejnisman et al 2018 Ejnisman et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-f7e8956e77da384c2b8dcbca17f9b04c414bf2f9e25822b29a96cc7913bdb0153</citedby><cites>FETCH-LOGICAL-c692t-f7e8956e77da384c2b8dcbca17f9b04c414bf2f9e25822b29a96cc7913bdb0153</cites><orcidid>0000-0002-9866-1960</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/PMC6013197/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6013197/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,2096,2915,23845,27901,27902,53766,53768,79342,79343</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29928035$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ejnisman, Leandro</creatorcontrib><creatorcontrib>Domb, Benjamin G</creatorcontrib><creatorcontrib>Souza, Felipe</creatorcontrib><creatorcontrib>Junqueira, Consuelo</creatorcontrib><creatorcontrib>Vicente, Jose Ricardo Negreiros</creatorcontrib><creatorcontrib>Croci, Alberto Tesconi</creatorcontrib><title>Are femoroacetabular impingement tomographic angles associated with the histological assessment of labral tears? A cadaveric study</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>This study sought to investigate the association between tomographic femoroacetabular impingement (FAI) angles and histologically evaluated labral tears. The authors hypothesized that cadavers presenting with cam and pincer morphologies would present a higher prevalence of acetabular labral tears.
Twenty fresh cadavers were submitted to computed tomography. Standard FAI angles were measured, including the alpha angle, femoral version, acetabular version, Tonnis angle and center-edge angle. A cam lesion was defined as an alpha angle greater than 50o. A pincer lesion was defined as a center-edge angle greater than 40o, a Tonnis angle less than 0o or acetabular version less than 0o. After dissection, three fragments of each acetabulum, corresponding to the antero-superior, superior and postero-superior acetabular rim, were obtained. These fragments were submitted to routine histological preparation. Each slide was evaluated for possible labral tears. Tears were classified according to their Seldes type.
The mean age of the cadavers was 50.2 years (SD: 7.4; 13 males). Sixteen (80%) of the cadavers had a cam lesion, and eight cadavers (40%) had a pincer lesion. Histologically, 16 (80%) of the cadavers had a labral tear in at least one region. According to the Seldes classification, 60.7% and 28.6% of these labral tears were type 1 and type 2, respectively. A mixed type of labral tear (10.7%), which represented a new form of Seldes tear, was described. Cadavers with a labral tear had significantly higher alpha angles than other cadavers (53.29o vs 49.33o, p = 0.01). Pincer lesions were not associated with labral tears. We found no association between pincer or cam lesions and Seldes classification.
Cadavers presenting with higher alpha angles had a higher incidence of labral tears. No association was found between FAI and Seldes classification.
This study demonstrated a high prevalence of FAI abnormalities associated with histological alterations in a cadaveric sample. Joint damage may be present in the early stages of FAI.</description><subject>Abnormalities</subject><subject>Acetabulum</subject><subject>Arthritis</subject><subject>Biology and Life Sciences</subject><subject>Cadaver</subject><subject>Cadavers</subject><subject>Cartilage - diagnostic imaging</subject><subject>Cartilage - pathology</subject><subject>CAT scans</subject><subject>Classification</subject><subject>Computed tomography</subject><subject>Dissection</subject><subject>Female</subject><subject>Femoracetabular Impingement - diagnostic imaging</subject><subject>Femoracetabular Impingement - pathology</subject><subject>Femur</subject><subject>Fragments</subject><subject>Health aspects</subject><subject>Hip joint</subject><subject>Humans</subject><subject>Impingement</subject><subject>Incidence angle</subject><subject>Injuries</subject><subject>Lesions</subject><subject>Male</subject><subject>Males</subject><subject>Medical imaging</subject><subject>Medicine and Health Sciences</subject><subject>Middle Aged</subject><subject>Morphology</subject><subject>Osteoarthritis</subject><subject>Research and Analysis Methods</subject><subject>Tearing</subject><subject>Tomography</subject><subject>Young adults</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqNk11rFDEUhgdRbK3-A9EBQfRi1yTzmRtlKX4UCgW_bsNJ5mQmJTPZJplqb_3lZrfb0pVeSC4Szjzvm8mbnCx7TsmSFg19d-5mP4Fdrt2ES0I5Lyr2IDukvGCLmpHi4Z31QfYkhHNCqqKt68fZAeOctaSoDrM_K4-5xtF5BwojyNmCz824NlOPI04xj250vYf1YFQOU28x5BCCUwYidvkvE4c8DpgPJkRnXW8U2A2AIWzlTucWpE_FiODDh3yVK-jgEn3yC3Hurp5mjzTYgM9281H249PH78dfFqdnn0-OV6cLVXMWF7rBllc1Nk0HRVsqJttOSQW00VySUpW0lJppjqxqGZOMA6-VajgtZCcJrYqj7OW179q6IHbxBcFI1bRtU5dtIk6uic7BuVh7M4K_Eg6M2Bac7wX4aJRFoWmhVV02XNZlqaUELhuqWU06WVSIG6_3u91mOWKnUhYphD3T_S-TGUTvLkVNaEF5kwze7Ay8u5gxRDGaoNBamNDN2_9uK8JqXib01T_o_afbUT2kA5hJu7Sv2piKVVWml1FV25SW91BpdDgald6aNqm-J3i7J0hMxN-xhzkEcfLt6_-zZz_32dd32AHBxiE4O0fjprAPlteg8i4Ej_o2ZErEplVu0hCbVhG7VkmyF3cv6FZ00xvFX7McEaI</recordid><startdate>20180621</startdate><enddate>20180621</enddate><creator>Ejnisman, Leandro</creator><creator>Domb, Benjamin G</creator><creator>Souza, Felipe</creator><creator>Junqueira, Consuelo</creator><creator>Vicente, Jose Ricardo Negreiros</creator><creator>Croci, Alberto Tesconi</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-9866-1960</orcidid></search><sort><creationdate>20180621</creationdate><title>Are femoroacetabular impingement tomographic angles associated with the histological assessment of labral tears? A cadaveric study</title><author>Ejnisman, Leandro ; Domb, Benjamin G ; Souza, Felipe ; Junqueira, Consuelo ; Vicente, Jose Ricardo Negreiros ; Croci, Alberto Tesconi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-f7e8956e77da384c2b8dcbca17f9b04c414bf2f9e25822b29a96cc7913bdb0153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Abnormalities</topic><topic>Acetabulum</topic><topic>Arthritis</topic><topic>Biology and Life Sciences</topic><topic>Cadaver</topic><topic>Cadavers</topic><topic>Cartilage - diagnostic imaging</topic><topic>Cartilage - pathology</topic><topic>CAT scans</topic><topic>Classification</topic><topic>Computed tomography</topic><topic>Dissection</topic><topic>Female</topic><topic>Femoracetabular Impingement - diagnostic imaging</topic><topic>Femoracetabular Impingement - pathology</topic><topic>Femur</topic><topic>Fragments</topic><topic>Health aspects</topic><topic>Hip joint</topic><topic>Humans</topic><topic>Impingement</topic><topic>Incidence angle</topic><topic>Injuries</topic><topic>Lesions</topic><topic>Male</topic><topic>Males</topic><topic>Medical imaging</topic><topic>Medicine and Health Sciences</topic><topic>Middle Aged</topic><topic>Morphology</topic><topic>Osteoarthritis</topic><topic>Research and Analysis Methods</topic><topic>Tearing</topic><topic>Tomography</topic><topic>Young adults</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ejnisman, Leandro</creatorcontrib><creatorcontrib>Domb, Benjamin G</creatorcontrib><creatorcontrib>Souza, Felipe</creatorcontrib><creatorcontrib>Junqueira, Consuelo</creatorcontrib><creatorcontrib>Vicente, Jose Ricardo Negreiros</creatorcontrib><creatorcontrib>Croci, Alberto Tesconi</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: Opposing Viewpoints</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Nursing & Allied Health Database</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Meteorological & Geoastrophysical Abstracts - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ejnisman, Leandro</au><au>Domb, Benjamin G</au><au>Souza, Felipe</au><au>Junqueira, Consuelo</au><au>Vicente, Jose Ricardo Negreiros</au><au>Croci, Alberto Tesconi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Are femoroacetabular impingement tomographic angles associated with the histological assessment of labral tears? A cadaveric study</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2018-06-21</date><risdate>2018</risdate><volume>13</volume><issue>6</issue><spage>e0199352</spage><epage>e0199352</epage><pages>e0199352-e0199352</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>This study sought to investigate the association between tomographic femoroacetabular impingement (FAI) angles and histologically evaluated labral tears. The authors hypothesized that cadavers presenting with cam and pincer morphologies would present a higher prevalence of acetabular labral tears.
Twenty fresh cadavers were submitted to computed tomography. Standard FAI angles were measured, including the alpha angle, femoral version, acetabular version, Tonnis angle and center-edge angle. A cam lesion was defined as an alpha angle greater than 50o. A pincer lesion was defined as a center-edge angle greater than 40o, a Tonnis angle less than 0o or acetabular version less than 0o. After dissection, three fragments of each acetabulum, corresponding to the antero-superior, superior and postero-superior acetabular rim, were obtained. These fragments were submitted to routine histological preparation. Each slide was evaluated for possible labral tears. Tears were classified according to their Seldes type.
The mean age of the cadavers was 50.2 years (SD: 7.4; 13 males). Sixteen (80%) of the cadavers had a cam lesion, and eight cadavers (40%) had a pincer lesion. Histologically, 16 (80%) of the cadavers had a labral tear in at least one region. According to the Seldes classification, 60.7% and 28.6% of these labral tears were type 1 and type 2, respectively. A mixed type of labral tear (10.7%), which represented a new form of Seldes tear, was described. Cadavers with a labral tear had significantly higher alpha angles than other cadavers (53.29o vs 49.33o, p = 0.01). Pincer lesions were not associated with labral tears. We found no association between pincer or cam lesions and Seldes classification.
Cadavers presenting with higher alpha angles had a higher incidence of labral tears. No association was found between FAI and Seldes classification.
This study demonstrated a high prevalence of FAI abnormalities associated with histological alterations in a cadaveric sample. Joint damage may be present in the early stages of FAI.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>29928035</pmid><doi>10.1371/journal.pone.0199352</doi><tpages>e0199352</tpages><orcidid>https://orcid.org/0000-0002-9866-1960</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Abnormalities Acetabulum Arthritis Biology and Life Sciences Cadaver Cadavers Cartilage - diagnostic imaging Cartilage - pathology CAT scans Classification Computed tomography Dissection Female Femoracetabular Impingement - diagnostic imaging Femoracetabular Impingement - pathology Femur Fragments Health aspects Hip joint Humans Impingement Incidence angle Injuries Lesions Male Males Medical imaging Medicine and Health Sciences Middle Aged Morphology Osteoarthritis Research and Analysis Methods Tearing Tomography Young adults |
| title | Are femoroacetabular impingement tomographic angles associated with the histological assessment of labral tears? A cadaveric study |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T04%3A49%3A09IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Are%20femoroacetabular%20impingement%20tomographic%20angles%20associated%20with%20the%20histological%20assessment%20of%20labral%20tears?%20A%20cadaveric%20study&rft.jtitle=PloS%20one&rft.au=Ejnisman,%20Leandro&rft.date=2018-06-21&rft.volume=13&rft.issue=6&rft.spage=e0199352&rft.epage=e0199352&rft.pages=e0199352-e0199352&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0199352&rft_dat=%3Cgale_plos_%3EA543865515%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2057887648&rft_id=info:pmid/29928035&rft_galeid=A543865515&rft_doaj_id=oai_doaj_org_article_f13fc6479b644fbba9b71f260db35ee8&rfr_iscdi=true |