A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint
Objective The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability. Materials and methods The calculations were developed from three-dimensional (3D)-reconstructed co...
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| creator | Barchilon, Vidal S. Kotz, Eugene Barchilon Ben-Av, Mercedes Glazer, Ernesto Nyska, Meir |
| description | Objective
The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability.
Materials and methods
The calculations were developed from three-dimensional (3D)-reconstructed computerized tomography en face images of the glenoid with “subtraction” of the humeral head in 13 consecutive cases with known anterior glenohumeral joint instability diagnosed by history and clinical examination. The inferior portion of the glenoid was approximated to a true circle whose center was determined by means of a femoral head gauge. The eroded anterior area was calculated as the ratio between the depth (a perpendicular line from the center of the circle to the eroded edge of the anterior glenoid) and the radius of the inferior glenoid circle. This data was then compared to the results obtained by two additional different methods: direct computerized measurements of the missing area and direct computerized measurement of the ratio between the radius and depth, on two dimensional computed tomography (CT) en face view reconstructions of the glenoid.
Results
We provide a function that correlates the ratio between depth and radius of the inferior glenoid circle and the area of the missing anterior glenoid. The results obtained by three different methods were comparable. Simple trigonometric calculations showed that a 5% area defect corresponds to 0.8 (12.5%) of the radius of the inferior glenoid, while a 20% area defect corresponds to 0.5 (50%) of the same radius (Table
1
).
Table 1
Results according to each different method
Patient
Sex
Side
CA1
MA1
PAM1
R2
D2
PAM2
R3
D3
PAM3
1
M
R
738
19.1
2.58
15.1
13.4
2.45
16
14
2.6
2
M
R
462.6
30.5
6.59
11.9
9.7
4.83
16
10
12.97
3
F
L
359
24.5
6.82
17
11.8
9.86
11.8
17
9.86
4
M
L
522
59.4
11.37
12.7
9.1
8.95
16
10
12.97
5
M
L
670
93.1
13.89
13.6
7.6
16.84
16
9
16.31
6
M
R
659
137.5
20.8
14.3
7.1
20.10
20
8
25.23
7
M
L
520
137
26.34
11.6
5.1
23.49
16
8
19.55
AVG
12.63
12.36
14.21
SD
8.46
7.92
7.20
CA1
Area of circle directly measured by MPR software,
MA1
missing area of circle measured by MPR software,
PAM1
calculated (100 × MA1/CA1) percentage area missing for method 1,
R2
radius of the circle measured by MPR software,
D2
depth from the missing edge to the center of the circle measured by MPR software,
PAM2
calculated Percentage area missing from R2 and D2 using the function “q” (Appendix),
R3
radius of the circle mea |
| doi_str_mv | 10.1007/s00256-008-0506-8 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_69289260</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1897248031</sourcerecordid><originalsourceid>FETCH-LOGICAL-c399t-d0053c4f73e003f950f8bd8afe63027f4d8cdcf75c8c92f05c79f20137412cba3</originalsourceid><addsrcrecordid>eNp1kV1rHCEUhqU0NNu0P6A3RQrt3aTHj1HnMoR-QSA37bW4ju66zOhGnUB-Qv91TXbThUKvlOPznnPkQegdgUsCID8XANqLDkB10IPo1Au0IpzRjhJBXqIVMME7yrg6R69L2QEQKXvxCp0T1VMmhVih31e4hHk_OTy7uk0j9inju8XEGqqp4d5hd2-mpV1TxMnjum1kKCXEDTbZmedaC7gcWnYzuZjCiEM81UIs1azDFOrDM_-EbZfZZTPhXQqxvkFn3kzFvT2eF-jX1y8_r793N7ffflxf3XSWDUPtRoCeWe4lcwDMDz14tR6V8U4woNLzUdnRetlbZQfqobdy8BQIk5xQuzbsAn069N3ndLe4UnX7j3XTZKJLS9FioGqgAhr44R9wl5Yc226agiK8HwhpEDlANqdSsvN6n8Ns8oMmoB8l6YMk3STpR0latcz7Y-NlPbvxlDhaacDHI2CKNZPPJtpQ_nIUuORS8MbRA1faU9y4fNrw_9P_ANoyq6s</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>208145911</pqid></control><display><type>article</type><title>A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint</title><source>MEDLINE</source><source>SpringerLink Journals - AutoHoldings</source><creator>Barchilon, Vidal S. ; Kotz, Eugene ; Barchilon Ben-Av, Mercedes ; Glazer, Ernesto ; Nyska, Meir</creator><creatorcontrib>Barchilon, Vidal S. ; Kotz, Eugene ; Barchilon Ben-Av, Mercedes ; Glazer, Ernesto ; Nyska, Meir</creatorcontrib><description>Objective
The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability.
Materials and methods
The calculations were developed from three-dimensional (3D)-reconstructed computerized tomography en face images of the glenoid with “subtraction” of the humeral head in 13 consecutive cases with known anterior glenohumeral joint instability diagnosed by history and clinical examination. The inferior portion of the glenoid was approximated to a true circle whose center was determined by means of a femoral head gauge. The eroded anterior area was calculated as the ratio between the depth (a perpendicular line from the center of the circle to the eroded edge of the anterior glenoid) and the radius of the inferior glenoid circle. This data was then compared to the results obtained by two additional different methods: direct computerized measurements of the missing area and direct computerized measurement of the ratio between the radius and depth, on two dimensional computed tomography (CT) en face view reconstructions of the glenoid.
Results
We provide a function that correlates the ratio between depth and radius of the inferior glenoid circle and the area of the missing anterior glenoid. The results obtained by three different methods were comparable. Simple trigonometric calculations showed that a 5% area defect corresponds to 0.8 (12.5%) of the radius of the inferior glenoid, while a 20% area defect corresponds to 0.5 (50%) of the same radius (Table
1
).
Table 1
Results according to each different method
Patient
Sex
Side
CA1
MA1
PAM1
R2
D2
PAM2
R3
D3
PAM3
1
M
R
738
19.1
2.58
15.1
13.4
2.45
16
14
2.6
2
M
R
462.6
30.5
6.59
11.9
9.7
4.83
16
10
12.97
3
F
L
359
24.5
6.82
17
11.8
9.86
11.8
17
9.86
4
M
L
522
59.4
11.37
12.7
9.1
8.95
16
10
12.97
5
M
L
670
93.1
13.89
13.6
7.6
16.84
16
9
16.31
6
M
R
659
137.5
20.8
14.3
7.1
20.10
20
8
25.23
7
M
L
520
137
26.34
11.6
5.1
23.49
16
8
19.55
AVG
12.63
12.36
14.21
SD
8.46
7.92
7.20
CA1
Area of circle directly measured by MPR software,
MA1
missing area of circle measured by MPR software,
PAM1
calculated (100 × MA1/CA1) percentage area missing for method 1,
R2
radius of the circle measured by MPR software,
D2
depth from the missing edge to the center of the circle measured by MPR software,
PAM2
calculated Percentage area missing from R2 and D2 using the function “q” (Appendix),
R3
radius of the circle measured with a femoral gauge,
D3
depth from the missing edge to the center of the circle measured with a femoral gauge,
PAM3
calculated Percentage area missing from R3 and D3 using the function “q” (Appendix),
AVG
average, SD standard deviation
Conclusion
Using this simple method and the function provided, the eroded area of the anterior part of the glenoid in anterior glenohumeral instability can be calculated preoperatively using a 3D CT reconstruction of the glenoid with “subtraction” of the humeral head, obviating the need for sophisticated software to obtain this critical information for preoperative decision making.</description><identifier>ISSN: 0364-2348</identifier><identifier>EISSN: 1432-2161</identifier><identifier>DOI: 10.1007/s00256-008-0506-8</identifier><identifier>PMID: 18523766</identifier><identifier>CODEN: SKRADI</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adult ; Biological and medical sciences ; Female ; Humans ; Imaging ; Imaging, Three-Dimensional ; Investigative techniques, diagnostic techniques (general aspects) ; Joint Instability - diagnostic imaging ; Joint Instability - pathology ; Male ; Medical sciences ; Medicine & Public Health ; Middle Aged ; Nuclear Medicine ; Orthopedics ; Osteoarticular system. Muscles ; Pathology ; Radiodiagnosis. Nmr imagery. Nmr spectrometry ; Radiographic Image Interpretation, Computer-Assisted ; Radiology ; Scientific Article ; Shoulder Joint - diagnostic imaging ; Shoulder Joint - pathology ; Tomography, X-Ray Computed - methods</subject><ispartof>Skeletal radiology, 2008-08, Vol.37 (8), p.731-736</ispartof><rights>ISS 2008</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-d0053c4f73e003f950f8bd8afe63027f4d8cdcf75c8c92f05c79f20137412cba3</citedby><cites>FETCH-LOGICAL-c399t-d0053c4f73e003f950f8bd8afe63027f4d8cdcf75c8c92f05c79f20137412cba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00256-008-0506-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00256-008-0506-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20474764$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18523766$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Barchilon, Vidal S.</creatorcontrib><creatorcontrib>Kotz, Eugene</creatorcontrib><creatorcontrib>Barchilon Ben-Av, Mercedes</creatorcontrib><creatorcontrib>Glazer, Ernesto</creatorcontrib><creatorcontrib>Nyska, Meir</creatorcontrib><title>A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint</title><title>Skeletal radiology</title><addtitle>Skeletal Radiol</addtitle><addtitle>Skeletal Radiol</addtitle><description>Objective
The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability.
Materials and methods
The calculations were developed from three-dimensional (3D)-reconstructed computerized tomography en face images of the glenoid with “subtraction” of the humeral head in 13 consecutive cases with known anterior glenohumeral joint instability diagnosed by history and clinical examination. The inferior portion of the glenoid was approximated to a true circle whose center was determined by means of a femoral head gauge. The eroded anterior area was calculated as the ratio between the depth (a perpendicular line from the center of the circle to the eroded edge of the anterior glenoid) and the radius of the inferior glenoid circle. This data was then compared to the results obtained by two additional different methods: direct computerized measurements of the missing area and direct computerized measurement of the ratio between the radius and depth, on two dimensional computed tomography (CT) en face view reconstructions of the glenoid.
Results
We provide a function that correlates the ratio between depth and radius of the inferior glenoid circle and the area of the missing anterior glenoid. The results obtained by three different methods were comparable. Simple trigonometric calculations showed that a 5% area defect corresponds to 0.8 (12.5%) of the radius of the inferior glenoid, while a 20% area defect corresponds to 0.5 (50%) of the same radius (Table
1
).
Table 1
Results according to each different method
Patient
Sex
Side
CA1
MA1
PAM1
R2
D2
PAM2
R3
D3
PAM3
1
M
R
738
19.1
2.58
15.1
13.4
2.45
16
14
2.6
2
M
R
462.6
30.5
6.59
11.9
9.7
4.83
16
10
12.97
3
F
L
359
24.5
6.82
17
11.8
9.86
11.8
17
9.86
4
M
L
522
59.4
11.37
12.7
9.1
8.95
16
10
12.97
5
M
L
670
93.1
13.89
13.6
7.6
16.84
16
9
16.31
6
M
R
659
137.5
20.8
14.3
7.1
20.10
20
8
25.23
7
M
L
520
137
26.34
11.6
5.1
23.49
16
8
19.55
AVG
12.63
12.36
14.21
SD
8.46
7.92
7.20
CA1
Area of circle directly measured by MPR software,
MA1
missing area of circle measured by MPR software,
PAM1
calculated (100 × MA1/CA1) percentage area missing for method 1,
R2
radius of the circle measured by MPR software,
D2
depth from the missing edge to the center of the circle measured by MPR software,
PAM2
calculated Percentage area missing from R2 and D2 using the function “q” (Appendix),
R3
radius of the circle measured with a femoral gauge,
D3
depth from the missing edge to the center of the circle measured with a femoral gauge,
PAM3
calculated Percentage area missing from R3 and D3 using the function “q” (Appendix),
AVG
average, SD standard deviation
Conclusion
Using this simple method and the function provided, the eroded area of the anterior part of the glenoid in anterior glenohumeral instability can be calculated preoperatively using a 3D CT reconstruction of the glenoid with “subtraction” of the humeral head, obviating the need for sophisticated software to obtain this critical information for preoperative decision making.</description><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Female</subject><subject>Humans</subject><subject>Imaging</subject><subject>Imaging, Three-Dimensional</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Joint Instability - diagnostic imaging</subject><subject>Joint Instability - pathology</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Medicine & Public Health</subject><subject>Middle Aged</subject><subject>Nuclear Medicine</subject><subject>Orthopedics</subject><subject>Osteoarticular system. Muscles</subject><subject>Pathology</subject><subject>Radiodiagnosis. Nmr imagery. Nmr spectrometry</subject><subject>Radiographic Image Interpretation, Computer-Assisted</subject><subject>Radiology</subject><subject>Scientific Article</subject><subject>Shoulder Joint - diagnostic imaging</subject><subject>Shoulder Joint - pathology</subject><subject>Tomography, X-Ray Computed - methods</subject><issn>0364-2348</issn><issn>1432-2161</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kV1rHCEUhqU0NNu0P6A3RQrt3aTHj1HnMoR-QSA37bW4ju66zOhGnUB-Qv91TXbThUKvlOPznnPkQegdgUsCID8XANqLDkB10IPo1Au0IpzRjhJBXqIVMME7yrg6R69L2QEQKXvxCp0T1VMmhVih31e4hHk_OTy7uk0j9inju8XEGqqp4d5hd2-mpV1TxMnjum1kKCXEDTbZmedaC7gcWnYzuZjCiEM81UIs1azDFOrDM_-EbZfZZTPhXQqxvkFn3kzFvT2eF-jX1y8_r793N7ffflxf3XSWDUPtRoCeWe4lcwDMDz14tR6V8U4woNLzUdnRetlbZQfqobdy8BQIk5xQuzbsAn069N3ndLe4UnX7j3XTZKJLS9FioGqgAhr44R9wl5Yc226agiK8HwhpEDlANqdSsvN6n8Ns8oMmoB8l6YMk3STpR0latcz7Y-NlPbvxlDhaacDHI2CKNZPPJtpQ_nIUuORS8MbRA1faU9y4fNrw_9P_ANoyq6s</recordid><startdate>20080801</startdate><enddate>20080801</enddate><creator>Barchilon, Vidal S.</creator><creator>Kotz, Eugene</creator><creator>Barchilon Ben-Av, Mercedes</creator><creator>Glazer, Ernesto</creator><creator>Nyska, Meir</creator><general>Springer Berlin Heidelberg</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><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>3V.</scope><scope>7QP</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope></search><sort><creationdate>20080801</creationdate><title>A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint</title><author>Barchilon, Vidal S. ; Kotz, Eugene ; Barchilon Ben-Av, Mercedes ; Glazer, Ernesto ; Nyska, Meir</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-d0053c4f73e003f950f8bd8afe63027f4d8cdcf75c8c92f05c79f20137412cba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Female</topic><topic>Humans</topic><topic>Imaging</topic><topic>Imaging, Three-Dimensional</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Joint Instability - diagnostic imaging</topic><topic>Joint Instability - pathology</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Medicine & Public Health</topic><topic>Middle Aged</topic><topic>Nuclear Medicine</topic><topic>Orthopedics</topic><topic>Osteoarticular system. Muscles</topic><topic>Pathology</topic><topic>Radiodiagnosis. Nmr imagery. Nmr spectrometry</topic><topic>Radiographic Image Interpretation, Computer-Assisted</topic><topic>Radiology</topic><topic>Scientific Article</topic><topic>Shoulder Joint - diagnostic imaging</topic><topic>Shoulder Joint - pathology</topic><topic>Tomography, X-Ray Computed - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barchilon, Vidal S.</creatorcontrib><creatorcontrib>Kotz, Eugene</creatorcontrib><creatorcontrib>Barchilon Ben-Av, Mercedes</creatorcontrib><creatorcontrib>Glazer, Ernesto</creatorcontrib><creatorcontrib>Nyska, Meir</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Proquest Nursing & Allied Health Source</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>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>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace 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>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing & Allied Health Premium</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Skeletal radiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barchilon, Vidal S.</au><au>Kotz, Eugene</au><au>Barchilon Ben-Av, Mercedes</au><au>Glazer, Ernesto</au><au>Nyska, Meir</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint</atitle><jtitle>Skeletal radiology</jtitle><stitle>Skeletal Radiol</stitle><addtitle>Skeletal Radiol</addtitle><date>2008-08-01</date><risdate>2008</risdate><volume>37</volume><issue>8</issue><spage>731</spage><epage>736</epage><pages>731-736</pages><issn>0364-2348</issn><eissn>1432-2161</eissn><coden>SKRADI</coden><abstract>Objective
The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability.
Materials and methods
The calculations were developed from three-dimensional (3D)-reconstructed computerized tomography en face images of the glenoid with “subtraction” of the humeral head in 13 consecutive cases with known anterior glenohumeral joint instability diagnosed by history and clinical examination. The inferior portion of the glenoid was approximated to a true circle whose center was determined by means of a femoral head gauge. The eroded anterior area was calculated as the ratio between the depth (a perpendicular line from the center of the circle to the eroded edge of the anterior glenoid) and the radius of the inferior glenoid circle. This data was then compared to the results obtained by two additional different methods: direct computerized measurements of the missing area and direct computerized measurement of the ratio between the radius and depth, on two dimensional computed tomography (CT) en face view reconstructions of the glenoid.
Results
We provide a function that correlates the ratio between depth and radius of the inferior glenoid circle and the area of the missing anterior glenoid. The results obtained by three different methods were comparable. Simple trigonometric calculations showed that a 5% area defect corresponds to 0.8 (12.5%) of the radius of the inferior glenoid, while a 20% area defect corresponds to 0.5 (50%) of the same radius (Table
1
).
Table 1
Results according to each different method
Patient
Sex
Side
CA1
MA1
PAM1
R2
D2
PAM2
R3
D3
PAM3
1
M
R
738
19.1
2.58
15.1
13.4
2.45
16
14
2.6
2
M
R
462.6
30.5
6.59
11.9
9.7
4.83
16
10
12.97
3
F
L
359
24.5
6.82
17
11.8
9.86
11.8
17
9.86
4
M
L
522
59.4
11.37
12.7
9.1
8.95
16
10
12.97
5
M
L
670
93.1
13.89
13.6
7.6
16.84
16
9
16.31
6
M
R
659
137.5
20.8
14.3
7.1
20.10
20
8
25.23
7
M
L
520
137
26.34
11.6
5.1
23.49
16
8
19.55
AVG
12.63
12.36
14.21
SD
8.46
7.92
7.20
CA1
Area of circle directly measured by MPR software,
MA1
missing area of circle measured by MPR software,
PAM1
calculated (100 × MA1/CA1) percentage area missing for method 1,
R2
radius of the circle measured by MPR software,
D2
depth from the missing edge to the center of the circle measured by MPR software,
PAM2
calculated Percentage area missing from R2 and D2 using the function “q” (Appendix),
R3
radius of the circle measured with a femoral gauge,
D3
depth from the missing edge to the center of the circle measured with a femoral gauge,
PAM3
calculated Percentage area missing from R3 and D3 using the function “q” (Appendix),
AVG
average, SD standard deviation
Conclusion
Using this simple method and the function provided, the eroded area of the anterior part of the glenoid in anterior glenohumeral instability can be calculated preoperatively using a 3D CT reconstruction of the glenoid with “subtraction” of the humeral head, obviating the need for sophisticated software to obtain this critical information for preoperative decision making.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>18523766</pmid><doi>10.1007/s00256-008-0506-8</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0364-2348 |
| ispartof | Skeletal radiology, 2008-08, Vol.37 (8), p.731-736 |
| issn | 0364-2348 1432-2161 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_69289260 |
| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | Adult Biological and medical sciences Female Humans Imaging Imaging, Three-Dimensional Investigative techniques, diagnostic techniques (general aspects) Joint Instability - diagnostic imaging Joint Instability - pathology Male Medical sciences Medicine & Public Health Middle Aged Nuclear Medicine Orthopedics Osteoarticular system. Muscles Pathology Radiodiagnosis. Nmr imagery. Nmr spectrometry Radiographic Image Interpretation, Computer-Assisted Radiology Scientific Article Shoulder Joint - diagnostic imaging Shoulder Joint - pathology Tomography, X-Ray Computed - methods |
| title | A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T13%3A26%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=A%20simple%20method%20for%20quantitative%20evaluation%20of%20the%20missing%20area%20of%20the%20anterior%20glenoid%20in%20anterior%20instability%20of%20the%20glenohumeral%20joint&rft.jtitle=Skeletal%20radiology&rft.au=Barchilon,%20Vidal%20S.&rft.date=2008-08-01&rft.volume=37&rft.issue=8&rft.spage=731&rft.epage=736&rft.pages=731-736&rft.issn=0364-2348&rft.eissn=1432-2161&rft.coden=SKRADI&rft_id=info:doi/10.1007/s00256-008-0506-8&rft_dat=%3Cproquest_cross%3E1897248031%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=208145911&rft_id=info:pmid/18523766&rfr_iscdi=true |