Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee
The biomechanical effectiveness of a valgus-inducing knee brace was investigated for 16 patients with knee osteoarthritis (mean +/- standard deviation age 56 +/- 10 yr, height 172 +/- 9 cm, mass 83 +/- 7 kg, body mass index 27.6 +/- 4.5 kg/m(2)). At the time of investigation, all subjects had been w...
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| Veröffentlicht in: | Journal of rehabilitation research and development 2010-01, Vol.47 (5), p.419-429 |
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| creator | Schmalz, Thomas Knopf, Elmar Drewitz, Heiko Blumentritt, Siegmar |
| description | The biomechanical effectiveness of a valgus-inducing knee brace was investigated for 16 patients with knee osteoarthritis (mean +/- standard deviation age 56 +/- 10 yr, height 172 +/- 9 cm, mass 83 +/- 7 kg, body mass index 27.6 +/- 4.5 kg/m(2)). At the time of investigation, all subjects had been wearing the brace for at least 4 weeks. In addition to conducting standard gait analysis, we calculated the valgus moment generated by the brace by using a novel system that measured the actual deformation of the brace during stance phase and determined the reaction force created by the brace on the leg. The mean maximum value of the orthotic valgus moment was 0.053 Nm/kg, which represents approximately 10% of the external genu varus moment without the brace. This finding may explain the pain relief reported by patients using such braces in clinical studies. Use of the tested brace also decreased the magnitude of gait asymmetry between the braced and contralateral legs during walking (horizontal ground reaction force, external knee flexion moment), presumably because the subjects' need to walk abnormally to shield the knee from pain was reduced. |
| doi_str_mv | 10.1682/jrrd.2009.05.0067 |
| format | Article |
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At the time of investigation, all subjects had been wearing the brace for at least 4 weeks. In addition to conducting standard gait analysis, we calculated the valgus moment generated by the brace by using a novel system that measured the actual deformation of the brace during stance phase and determined the reaction force created by the brace on the leg. The mean maximum value of the orthotic valgus moment was 0.053 Nm/kg, which represents approximately 10% of the external genu varus moment without the brace. This finding may explain the pain relief reported by patients using such braces in clinical studies. Use of the tested brace also decreased the magnitude of gait asymmetry between the braced and contralateral legs during walking (horizontal ground reaction force, external knee flexion moment), presumably because the subjects' need to walk abnormally to shield the knee from pain was reduced.</description><identifier>ISSN: 0748-7711</identifier><identifier>EISSN: 1938-1352</identifier><identifier>DOI: 10.1682/jrrd.2009.05.0067</identifier><identifier>PMID: 20803386</identifier><identifier>CODEN: JRRDDB</identifier><language>eng</language><publisher>United States: Department of Veterans Affairs</publisher><subject>Adjustment ; Adult ; Aged ; Arthritis ; Biomechanical Phenomena ; Braces ; Care and treatment ; Equipment Design ; Family medical history ; Female ; Health aspects ; Humans ; Knee ; Knee Joint - physiology ; Male ; Medical equipment ; Methods ; Middle Aged ; Orthopedic braces ; Osteoarthritis ; Osteoarthritis, Knee - complications ; Osteoarthritis, Knee - therapy ; Pain - etiology ; Pain Management ; Rehabilitation ; Studies ; Walking ; Weight-Bearing</subject><ispartof>Journal of rehabilitation research and development, 2010-01, Vol.47 (5), p.419-429</ispartof><rights>COPYRIGHT 2010 Department of Veterans Affairs</rights><rights>Copyright Superintendent of Documents 2010</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c535t-1c0f356f51483cb1a1f4c5808ad0fd12f468d730731951b7aa44c3d63a9519973</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20803386$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Schmalz, Thomas</creatorcontrib><creatorcontrib>Knopf, Elmar</creatorcontrib><creatorcontrib>Drewitz, Heiko</creatorcontrib><creatorcontrib>Blumentritt, Siegmar</creatorcontrib><title>Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee</title><title>Journal of rehabilitation research and development</title><addtitle>J Rehabil Res Dev</addtitle><description>The biomechanical effectiveness of a valgus-inducing knee brace was investigated for 16 patients with knee osteoarthritis (mean +/- standard deviation age 56 +/- 10 yr, height 172 +/- 9 cm, mass 83 +/- 7 kg, body mass index 27.6 +/- 4.5 kg/m(2)). At the time of investigation, all subjects had been wearing the brace for at least 4 weeks. In addition to conducting standard gait analysis, we calculated the valgus moment generated by the brace by using a novel system that measured the actual deformation of the brace during stance phase and determined the reaction force created by the brace on the leg. The mean maximum value of the orthotic valgus moment was 0.053 Nm/kg, which represents approximately 10% of the external genu varus moment without the brace. This finding may explain the pain relief reported by patients using such braces in clinical studies. Use of the tested brace also decreased the magnitude of gait asymmetry between the braced and contralateral legs during walking (horizontal ground reaction force, external knee flexion moment), presumably because the subjects' need to walk abnormally to shield the knee from pain was reduced.</description><subject>Adjustment</subject><subject>Adult</subject><subject>Aged</subject><subject>Arthritis</subject><subject>Biomechanical Phenomena</subject><subject>Braces</subject><subject>Care and treatment</subject><subject>Equipment Design</subject><subject>Family medical history</subject><subject>Female</subject><subject>Health aspects</subject><subject>Humans</subject><subject>Knee</subject><subject>Knee Joint - physiology</subject><subject>Male</subject><subject>Medical equipment</subject><subject>Methods</subject><subject>Middle Aged</subject><subject>Orthopedic braces</subject><subject>Osteoarthritis</subject><subject>Osteoarthritis, Knee - complications</subject><subject>Osteoarthritis, Knee - therapy</subject><subject>Pain - etiology</subject><subject>Pain Management</subject><subject>Rehabilitation</subject><subject>Studies</subject><subject>Walking</subject><subject>Weight-Bearing</subject><issn>0748-7711</issn><issn>1938-1352</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkUtv1TAQhS1ERW8LP4ANimDRVcKMH7GzvCrPqhJSBWvjOPatL0lc7KRS_30TbkGiQkJeWB5_52hmDiEvESqsFX27T6mrKEBTgagAavmEbLBhqkQm6FOyAclVKSXiMTnJeQ8AlFF8Ro4pKGBM1RvyfTua_i6HXERftCEOzl6bMVjTF857Z6dw60aXf33fmn435zKM3WzDuCt-jM4VbTLWFT6mIubJRZOm6xSmg98KPCdH3vTZvXi4T8m3D--_nn8qL798_Hy-vSytYGIq0YJnovYCuWK2RYOeW6FAmQ58h9TzWnWSgWTYCGylMZxb1tXMLM-mkeyUnB18b1L8Obs86SFk6_rejC7OWSspRbMMTf9LSt4ArRtcydePyH2c07KwFeI1ZxTEAr05QDvTOx1GH6dlJaul3lKOqkYp1_aqf1DL6dwQbBydD0v9LwEeBDbFnJPz-iaFwaQ7jaDX9PXF1dU7vaavQeg1_UXz6qHfuR1c90fxO252D-iUqMc</recordid><startdate>20100101</startdate><enddate>20100101</enddate><creator>Schmalz, Thomas</creator><creator>Knopf, Elmar</creator><creator>Drewitz, Heiko</creator><creator>Blumentritt, Siegmar</creator><general>Department of Veterans Affairs</general><general>Superintendent of Documents</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>3V.</scope><scope>4T-</scope><scope>7QO</scope><scope>7RV</scope><scope>7TK</scope><scope>7TS</scope><scope>7X7</scope><scope>7XB</scope><scope>88C</scope><scope>88E</scope><scope>88I</scope><scope>8AF</scope><scope>8AO</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M0T</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>S0X</scope><scope>7X8</scope><scope>7QP</scope></search><sort><creationdate>20100101</creationdate><title>Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee</title><author>Schmalz, Thomas ; Knopf, Elmar ; Drewitz, Heiko ; Blumentritt, Siegmar</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c535t-1c0f356f51483cb1a1f4c5808ad0fd12f468d730731951b7aa44c3d63a9519973</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Adjustment</topic><topic>Adult</topic><topic>Aged</topic><topic>Arthritis</topic><topic>Biomechanical Phenomena</topic><topic>Braces</topic><topic>Care and treatment</topic><topic>Equipment Design</topic><topic>Family medical history</topic><topic>Female</topic><topic>Health aspects</topic><topic>Humans</topic><topic>Knee</topic><topic>Knee Joint - physiology</topic><topic>Male</topic><topic>Medical equipment</topic><topic>Methods</topic><topic>Middle Aged</topic><topic>Orthopedic braces</topic><topic>Osteoarthritis</topic><topic>Osteoarthritis, Knee - complications</topic><topic>Osteoarthritis, Knee - therapy</topic><topic>Pain - etiology</topic><topic>Pain Management</topic><topic>Rehabilitation</topic><topic>Studies</topic><topic>Walking</topic><topic>Weight-Bearing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Schmalz, Thomas</creatorcontrib><creatorcontrib>Knopf, Elmar</creatorcontrib><creatorcontrib>Drewitz, Heiko</creatorcontrib><creatorcontrib>Blumentritt, Siegmar</creatorcontrib><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>Docstoc</collection><collection>Biotechnology Research Abstracts</collection><collection>Nursing & Allied Health Database</collection><collection>Neurosciences Abstracts</collection><collection>Physical Education Index</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Healthcare Administration Database (Alumni)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>eLibrary</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</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>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Healthcare Administration Database</collection><collection>Medical Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Research Library (Corporate)</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</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>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><collection>MEDLINE - Academic</collection><collection>Calcium & Calcified Tissue Abstracts</collection><jtitle>Journal of rehabilitation research and development</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schmalz, Thomas</au><au>Knopf, Elmar</au><au>Drewitz, Heiko</au><au>Blumentritt, Siegmar</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee</atitle><jtitle>Journal of rehabilitation research and development</jtitle><addtitle>J Rehabil Res Dev</addtitle><date>2010-01-01</date><risdate>2010</risdate><volume>47</volume><issue>5</issue><spage>419</spage><epage>429</epage><pages>419-429</pages><issn>0748-7711</issn><eissn>1938-1352</eissn><coden>JRRDDB</coden><abstract>The biomechanical effectiveness of a valgus-inducing knee brace was investigated for 16 patients with knee osteoarthritis (mean +/- standard deviation age 56 +/- 10 yr, height 172 +/- 9 cm, mass 83 +/- 7 kg, body mass index 27.6 +/- 4.5 kg/m(2)). At the time of investigation, all subjects had been wearing the brace for at least 4 weeks. In addition to conducting standard gait analysis, we calculated the valgus moment generated by the brace by using a novel system that measured the actual deformation of the brace during stance phase and determined the reaction force created by the brace on the leg. The mean maximum value of the orthotic valgus moment was 0.053 Nm/kg, which represents approximately 10% of the external genu varus moment without the brace. This finding may explain the pain relief reported by patients using such braces in clinical studies. Use of the tested brace also decreased the magnitude of gait asymmetry between the braced and contralateral legs during walking (horizontal ground reaction force, external knee flexion moment), presumably because the subjects' need to walk abnormally to shield the knee from pain was reduced.</abstract><cop>United States</cop><pub>Department of Veterans Affairs</pub><pmid>20803386</pmid><doi>10.1682/jrrd.2009.05.0067</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of rehabilitation research and development, 2010-01, Vol.47 (5), p.419-429 |
| issn | 0748-7711 1938-1352 |
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| source | MEDLINE; U.S. Government Documents; EZB-FREE-00999 freely available EZB journals |
| subjects | Adjustment Adult Aged Arthritis Biomechanical Phenomena Braces Care and treatment Equipment Design Family medical history Female Health aspects Humans Knee Knee Joint - physiology Male Medical equipment Methods Middle Aged Orthopedic braces Osteoarthritis Osteoarthritis, Knee - complications Osteoarthritis, Knee - therapy Pain - etiology Pain Management Rehabilitation Studies Walking Weight-Bearing |
| title | Analysis of biomechanical effectiveness of valgus-inducing knee brace for osteoarthritis of knee |
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