A validated cadaveric model of trochlear dysplasia
Purpose Despite the high prevalence of trochlear dysplasia among patients with patellar instability, it is not well studied and is infrequently addressed surgically. The lack of a validated cadaveric model of trochlear dysplasia may be a contributing factor. The goal of this study was to develop a s...
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| Veröffentlicht in: | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2014-10, Vol.22 (10), p.2357-2363 |
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| container_title | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA |
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| creator | Latt, L. D. Christopher, M. Nicolini, A. Burk, D. R. Dezfuli, B. Serack, B. J. Fithian, D. C. |
| description | Purpose
Despite the high prevalence of trochlear dysplasia among patients with patellar instability, it is not well studied and is infrequently addressed surgically. The lack of a validated cadaveric model of trochlear dysplasia may be a contributing factor. The goal of this study was to develop a simple, reproducible, and realistic cadaveric model of trochlear dysplasia by surgically modifying cadaveric femora with normal anatomy and then to validate this model through the use of mechanical and fluoroscopic measurements.
Methods
The floor of the trochlear groove was surgically elevated using an inflatable bone tamp in eight cadaveric femora. The trochlear depth (TD) was measured with a custom-designed measuring device, and radiographic markers of dysplasia (sulcus angle, crossing sign, and prominence) were assessed before and after surgical modification.
Results
The average TD was 3.6 ± 1.4, 4.6 ± 1.1, and 5.1 ± 1.0 mm prior to reverse trochleoplasty (RT) and 1.0 ± 1.8, 2.3 ± 1.3, and 3.3 ± 2.5 mm following RT at 0°, 20°, and 40° of flexion, respectively. These direct measurements of TD were confirmed with fluoroscopy. The sulcus angle averaged 141° prior to RT and 157° after RT. The average prominence across all specimens was 3.3 ± 0.7 mm before RT, and 5.5 ± 1.5 mm after RT. Finally, the crossing sign was found to be absent in all knees prior to RT and present in 7 of the 8 after RT.
Conclusions
The results of this study show that elevation of the trochlear floor with an inflatable bone tamp can reproducibly create a simulated dysplastic trochlea. This model may be useful in biomechanical studies of treatments for patellofemoral instability. |
| doi_str_mv | 10.1007/s00167-014-3033-2 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1566848374</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3437258821</sourcerecordid><originalsourceid>FETCH-LOGICAL-c475t-85fbf0e84a309fc3b02eed270a4626612715b39ade543703ecd88573257860ad3</originalsourceid><addsrcrecordid>eNqNkE1LAzEQhoMotlZ_gBdZ8OJldfKdPZbiFxS86Dlkk6xu2XZrslvovzd1q4ggeJqBeeYd5kHoHMM1BpA3EQALmQNmOQVKc3KAxpilRlImD9EYCkZyAlyM0EmMC4DUsuIYjQhTIAkpxohMs41pamc67zJrnNn4UNts2TrfZG2VdaG1b403IXPbuG5MrM0pOqpME_3Zvk7Qy93t8-whnz_dP86m89wyybtc8aqswCtmKBSVpSUQ7x2RYJggQmAiMS9pYZznjEqg3jqluKSESyXAODpBV0PuOrTvvY-dXtbR-qYxK9_2UWMuhGKKSvYflBYF25UJuvyFLto-rNIjnxRPugqcKDxQNrQxBl_pdaiXJmw1Br1zrwf3OrnXO_eapJ2LfXJfLr373viSnQAyADGNVq8-_Dj9Z-oHI4SLUg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1563520591</pqid></control><display><type>article</type><title>A validated cadaveric model of trochlear dysplasia</title><source>MEDLINE</source><source>Wiley Online Library Journals Frontfile Complete</source><source>Springer Nature - Complete Springer Journals</source><creator>Latt, L. D. ; Christopher, M. ; Nicolini, A. ; Burk, D. R. ; Dezfuli, B. ; Serack, B. J. ; Fithian, D. C.</creator><creatorcontrib>Latt, L. D. ; Christopher, M. ; Nicolini, A. ; Burk, D. R. ; Dezfuli, B. ; Serack, B. J. ; Fithian, D. C.</creatorcontrib><description>Purpose
Despite the high prevalence of trochlear dysplasia among patients with patellar instability, it is not well studied and is infrequently addressed surgically. The lack of a validated cadaveric model of trochlear dysplasia may be a contributing factor. The goal of this study was to develop a simple, reproducible, and realistic cadaveric model of trochlear dysplasia by surgically modifying cadaveric femora with normal anatomy and then to validate this model through the use of mechanical and fluoroscopic measurements.
Methods
The floor of the trochlear groove was surgically elevated using an inflatable bone tamp in eight cadaveric femora. The trochlear depth (TD) was measured with a custom-designed measuring device, and radiographic markers of dysplasia (sulcus angle, crossing sign, and prominence) were assessed before and after surgical modification.
Results
The average TD was 3.6 ± 1.4, 4.6 ± 1.1, and 5.1 ± 1.0 mm prior to reverse trochleoplasty (RT) and 1.0 ± 1.8, 2.3 ± 1.3, and 3.3 ± 2.5 mm following RT at 0°, 20°, and 40° of flexion, respectively. These direct measurements of TD were confirmed with fluoroscopy. The sulcus angle averaged 141° prior to RT and 157° after RT. The average prominence across all specimens was 3.3 ± 0.7 mm before RT, and 5.5 ± 1.5 mm after RT. Finally, the crossing sign was found to be absent in all knees prior to RT and present in 7 of the 8 after RT.
Conclusions
The results of this study show that elevation of the trochlear floor with an inflatable bone tamp can reproducibly create a simulated dysplastic trochlea. This model may be useful in biomechanical studies of treatments for patellofemoral instability.</description><identifier>ISSN: 0942-2056</identifier><identifier>EISSN: 1433-7347</identifier><identifier>DOI: 10.1007/s00167-014-3033-2</identifier><identifier>PMID: 24807229</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adult ; Biomechanics ; Female ; Femur - pathology ; Femur - surgery ; Humans ; Joint Instability - pathology ; Joint Instability - surgery ; Knee ; Knee Joint - pathology ; Knee Joint - surgery ; Male ; Medicine ; Medicine & Public Health ; Orthopedics ; Polymethyl methacrylate ; Range of Motion, Articular</subject><ispartof>Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014-10, Vol.22 (10), p.2357-2363</ispartof><rights>Springer-Verlag Berlin Heidelberg 2014</rights><rights>European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c475t-85fbf0e84a309fc3b02eed270a4626612715b39ade543703ecd88573257860ad3</citedby><cites>FETCH-LOGICAL-c475t-85fbf0e84a309fc3b02eed270a4626612715b39ade543703ecd88573257860ad3</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/s00167-014-3033-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00167-014-3033-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51298</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24807229$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Latt, L. D.</creatorcontrib><creatorcontrib>Christopher, M.</creatorcontrib><creatorcontrib>Nicolini, A.</creatorcontrib><creatorcontrib>Burk, D. R.</creatorcontrib><creatorcontrib>Dezfuli, B.</creatorcontrib><creatorcontrib>Serack, B. J.</creatorcontrib><creatorcontrib>Fithian, D. C.</creatorcontrib><title>A validated cadaveric model of trochlear dysplasia</title><title>Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA</title><addtitle>Knee Surg Sports Traumatol Arthrosc</addtitle><addtitle>Knee Surg Sports Traumatol Arthrosc</addtitle><description>Purpose
Despite the high prevalence of trochlear dysplasia among patients with patellar instability, it is not well studied and is infrequently addressed surgically. The lack of a validated cadaveric model of trochlear dysplasia may be a contributing factor. The goal of this study was to develop a simple, reproducible, and realistic cadaveric model of trochlear dysplasia by surgically modifying cadaveric femora with normal anatomy and then to validate this model through the use of mechanical and fluoroscopic measurements.
Methods
The floor of the trochlear groove was surgically elevated using an inflatable bone tamp in eight cadaveric femora. The trochlear depth (TD) was measured with a custom-designed measuring device, and radiographic markers of dysplasia (sulcus angle, crossing sign, and prominence) were assessed before and after surgical modification.
Results
The average TD was 3.6 ± 1.4, 4.6 ± 1.1, and 5.1 ± 1.0 mm prior to reverse trochleoplasty (RT) and 1.0 ± 1.8, 2.3 ± 1.3, and 3.3 ± 2.5 mm following RT at 0°, 20°, and 40° of flexion, respectively. These direct measurements of TD were confirmed with fluoroscopy. The sulcus angle averaged 141° prior to RT and 157° after RT. The average prominence across all specimens was 3.3 ± 0.7 mm before RT, and 5.5 ± 1.5 mm after RT. Finally, the crossing sign was found to be absent in all knees prior to RT and present in 7 of the 8 after RT.
Conclusions
The results of this study show that elevation of the trochlear floor with an inflatable bone tamp can reproducibly create a simulated dysplastic trochlea. This model may be useful in biomechanical studies of treatments for patellofemoral instability.</description><subject>Adult</subject><subject>Biomechanics</subject><subject>Female</subject><subject>Femur - pathology</subject><subject>Femur - surgery</subject><subject>Humans</subject><subject>Joint Instability - pathology</subject><subject>Joint Instability - surgery</subject><subject>Knee</subject><subject>Knee Joint - pathology</subject><subject>Knee Joint - surgery</subject><subject>Male</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Orthopedics</subject><subject>Polymethyl methacrylate</subject><subject>Range of Motion, Articular</subject><issn>0942-2056</issn><issn>1433-7347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNqNkE1LAzEQhoMotlZ_gBdZ8OJldfKdPZbiFxS86Dlkk6xu2XZrslvovzd1q4ggeJqBeeYd5kHoHMM1BpA3EQALmQNmOQVKc3KAxpilRlImD9EYCkZyAlyM0EmMC4DUsuIYjQhTIAkpxohMs41pamc67zJrnNn4UNts2TrfZG2VdaG1b403IXPbuG5MrM0pOqpME_3Zvk7Qy93t8-whnz_dP86m89wyybtc8aqswCtmKBSVpSUQ7x2RYJggQmAiMS9pYZznjEqg3jqluKSESyXAODpBV0PuOrTvvY-dXtbR-qYxK9_2UWMuhGKKSvYflBYF25UJuvyFLto-rNIjnxRPugqcKDxQNrQxBl_pdaiXJmw1Br1zrwf3OrnXO_eapJ2LfXJfLr373viSnQAyADGNVq8-_Dj9Z-oHI4SLUg</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Latt, L. 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R. ; Dezfuli, B. ; Serack, B. J. ; Fithian, D. C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c475t-85fbf0e84a309fc3b02eed270a4626612715b39ade543703ecd88573257860ad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adult</topic><topic>Biomechanics</topic><topic>Female</topic><topic>Femur - pathology</topic><topic>Femur - surgery</topic><topic>Humans</topic><topic>Joint Instability - pathology</topic><topic>Joint Instability - surgery</topic><topic>Knee</topic><topic>Knee Joint - pathology</topic><topic>Knee Joint - surgery</topic><topic>Male</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Orthopedics</topic><topic>Polymethyl methacrylate</topic><topic>Range of Motion, Articular</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Latt, L. 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D.</au><au>Christopher, M.</au><au>Nicolini, A.</au><au>Burk, D. R.</au><au>Dezfuli, B.</au><au>Serack, B. J.</au><au>Fithian, D. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A validated cadaveric model of trochlear dysplasia</atitle><jtitle>Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA</jtitle><stitle>Knee Surg Sports Traumatol Arthrosc</stitle><addtitle>Knee Surg Sports Traumatol Arthrosc</addtitle><date>2014-10-01</date><risdate>2014</risdate><volume>22</volume><issue>10</issue><spage>2357</spage><epage>2363</epage><pages>2357-2363</pages><issn>0942-2056</issn><eissn>1433-7347</eissn><abstract>Purpose
Despite the high prevalence of trochlear dysplasia among patients with patellar instability, it is not well studied and is infrequently addressed surgically. The lack of a validated cadaveric model of trochlear dysplasia may be a contributing factor. The goal of this study was to develop a simple, reproducible, and realistic cadaveric model of trochlear dysplasia by surgically modifying cadaveric femora with normal anatomy and then to validate this model through the use of mechanical and fluoroscopic measurements.
Methods
The floor of the trochlear groove was surgically elevated using an inflatable bone tamp in eight cadaveric femora. The trochlear depth (TD) was measured with a custom-designed measuring device, and radiographic markers of dysplasia (sulcus angle, crossing sign, and prominence) were assessed before and after surgical modification.
Results
The average TD was 3.6 ± 1.4, 4.6 ± 1.1, and 5.1 ± 1.0 mm prior to reverse trochleoplasty (RT) and 1.0 ± 1.8, 2.3 ± 1.3, and 3.3 ± 2.5 mm following RT at 0°, 20°, and 40° of flexion, respectively. These direct measurements of TD were confirmed with fluoroscopy. The sulcus angle averaged 141° prior to RT and 157° after RT. The average prominence across all specimens was 3.3 ± 0.7 mm before RT, and 5.5 ± 1.5 mm after RT. Finally, the crossing sign was found to be absent in all knees prior to RT and present in 7 of the 8 after RT.
Conclusions
The results of this study show that elevation of the trochlear floor with an inflatable bone tamp can reproducibly create a simulated dysplastic trochlea. This model may be useful in biomechanical studies of treatments for patellofemoral instability.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>24807229</pmid><doi>10.1007/s00167-014-3033-2</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0942-2056 |
| ispartof | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014-10, Vol.22 (10), p.2357-2363 |
| issn | 0942-2056 1433-7347 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1566848374 |
| source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Springer Nature - Complete Springer Journals |
| subjects | Adult Biomechanics Female Femur - pathology Femur - surgery Humans Joint Instability - pathology Joint Instability - surgery Knee Knee Joint - pathology Knee Joint - surgery Male Medicine Medicine & Public Health Orthopedics Polymethyl methacrylate Range of Motion, Articular |
| title | A validated cadaveric model of trochlear dysplasia |
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