In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome
The objective of this study was to utilise an ultrasonic technique to assess the effect of patellofemoral pain syndrome (PFPS) on the mechanical properties of the patellar tendon. Seven subjects with PFPS and seven matched control subjects volunteered to participate in this study. Subjects were aske...
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| Format: | Article |
| Language: | English |
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Wiley
2008-01-01
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| Series: | Applied Bionics and Biomechanics |
| Online Access: | http://dx.doi.org/10.1080/11762320802604741 |
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| author | Hsin-Yi Liu Michelle Boling Darin Padua R. Alexander Creighton Paul Weinhold |
| author_facet | Hsin-Yi Liu Michelle Boling Darin Padua R. Alexander Creighton Paul Weinhold |
| author_sort | Hsin-Yi Liu |
| collection | DOAJ |
| description | The objective of this study was to utilise an ultrasonic technique to assess the effect of patellofemoral pain syndrome (PFPS) on the mechanical properties of the patellar tendon. Seven subjects with PFPS and seven matched control subjects volunteered to participate in this study. Subjects were asked to perform isometric maximal voluntary contractions of the knee extensors while their knee extension torque was monitored and the displacement of the patellar tendon was recorded with an ultrasonic system. Our results showed significantly lower tendon stiffness (by ∼30%) in the PFPS subjects. Although tendon secant modulus was lower by 34% in the PFPS subjects, the difference was not statistically significant. Therefore, we conclude that the ultrasonic technique was able to detect a decrease in the structural stiffness of the patellar tendon associated with PFPS. The decrease in tendon stiffness was moderately correlated with the length of symptoms in these individuals. |
| format | Article |
| id | doaj-art-484279ce81674285834eb6a6e4699015 |
| institution | Kabale University |
| issn | 1176-2322 1754-2103 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Bionics and Biomechanics |
| spelling | doaj-art-484279ce81674285834eb6a6e46990152025-02-03T00:58:53ZengWileyApplied Bionics and Biomechanics1176-23221754-21032008-01-0152596310.1080/11762320802604741In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain SyndromeHsin-Yi Liu0Michelle Boling1Darin Padua2R. Alexander Creighton3Paul Weinhold4Department of Orthopaedics, University of North Carolina, Chapel Hill, NC 27599, USASports Medicine Laboratory, University of North Carolina, Chapel Hill, NC 27599, USASports Medicine Laboratory, University of North Carolina, Chapel Hill, NC 27599, USADepartment of Orthopaedics, University of North Carolina, Chapel Hill, NC 27599, USADepartment of Orthopaedics, University of North Carolina, Chapel Hill, NC 27599, USAThe objective of this study was to utilise an ultrasonic technique to assess the effect of patellofemoral pain syndrome (PFPS) on the mechanical properties of the patellar tendon. Seven subjects with PFPS and seven matched control subjects volunteered to participate in this study. Subjects were asked to perform isometric maximal voluntary contractions of the knee extensors while their knee extension torque was monitored and the displacement of the patellar tendon was recorded with an ultrasonic system. Our results showed significantly lower tendon stiffness (by ∼30%) in the PFPS subjects. Although tendon secant modulus was lower by 34% in the PFPS subjects, the difference was not statistically significant. Therefore, we conclude that the ultrasonic technique was able to detect a decrease in the structural stiffness of the patellar tendon associated with PFPS. The decrease in tendon stiffness was moderately correlated with the length of symptoms in these individuals.http://dx.doi.org/10.1080/11762320802604741 |
| spellingShingle | Hsin-Yi Liu Michelle Boling Darin Padua R. Alexander Creighton Paul Weinhold In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome Applied Bionics and Biomechanics |
| title | In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome |
| title_full | In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome |
| title_fullStr | In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome |
| title_full_unstemmed | In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome |
| title_short | In vivo Evaluation of Patellar Tendon Stiffness in Individuals with Patellofemoral Pain Syndrome |
| title_sort | in vivo evaluation of patellar tendon stiffness in individuals with patellofemoral pain syndrome |
| url | http://dx.doi.org/10.1080/11762320802604741 |
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