The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness.
The ligaments in coherence with the capsule of the hip joint are known to contribute to hip stability. Nevertheless, the contribution of the mechanical properties of the ligaments and gender- or side-specific differences are still not completely clear. To date, comparisons of the hip capsule ligamen...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2016-01-01
|
| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5042535?pdf=render |
| _version_ | 1811219866942701568 |
|---|---|
| author | Philipp Pieroh Sebastian Schneider Uwe Lingslebe Freddy Sichting Thomas Wolfskämpf Christoph Josten Jörg Böhme Niels Hammer Hanno Steinke |
| author_facet | Philipp Pieroh Sebastian Schneider Uwe Lingslebe Freddy Sichting Thomas Wolfskämpf Christoph Josten Jörg Böhme Niels Hammer Hanno Steinke |
| author_sort | Philipp Pieroh |
| collection | DOAJ |
| description | The ligaments in coherence with the capsule of the hip joint are known to contribute to hip stability. Nevertheless, the contribution of the mechanical properties of the ligaments and gender- or side-specific differences are still not completely clear. To date, comparisons of the hip capsule ligaments to other tissues stabilizing the pelvis and hip joint, e.g. the iliotibial tract, were not performed.Hip capsule ligaments were obtained from 17 human cadavers (9 females, 7 males, 13 left and 8 right sides, mean age 83.65 ± 10.54 years). 18 iliofemoral, 9 ischiofemoral and 17 pubofemoral ligaments were prepared. Uniaxial stress-strain properties were obtained from the load-deformation curves before the secant elastic modulus was computed. Strain, elastic modulus and cross sections were compared.Strain and elastic modulus revealed no significant differences between the iliofemoral (strain 129.8 ± 11.1%, elastic modulus 48.8 ± 21.4 N/mm2), ischiofemoral (strain 128.7 ± 13.7%, elastic modulus 37.5 ± 20.4 N/mm2) and pubofemoral (strain 133.2 ± 23.7%, elastic modulus 49.0 ± 32.1 N/mm2) ligaments. The iliofemoral ligament (53.5 ± 15.1 mm2) yielded a significantly higher cross section compared to the ischiofemoral (19.2 ± 13.2 mm2) and pubofemoral (15.2 ± 7.2 mm2) ligament. No significant gender- or side-specific differences were determined. A comparison to the published data on the iliotibial tract revealed lower elasticity and less variation in the ligaments of the hip joint.Comparison of the mechanical data of the hip joint ligaments indicates that their role may likely exceed a function as a mechanical stabilizer. Uniaxial testing of interwoven collagen fibers might lead to a misinterpretation of the mechanical properties of the hip capsule ligaments in the given setup, concealing its uniaxial properties. This underlines the need for a polyaxial test setup using fresh and non-embalmed tissues. |
| first_indexed | 2024-04-12T07:33:06Z |
| format | Article |
| id | doaj.art-f82bcf6b4859473d9b6eece4a5f9ae78 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-12T07:33:06Z |
| publishDate | 2016-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-f82bcf6b4859473d9b6eece4a5f9ae782022-12-22T03:42:02ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01119e016330610.1371/journal.pone.0163306The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness.Philipp PierohSebastian SchneiderUwe LingslebeFreddy SichtingThomas WolfskämpfChristoph JostenJörg BöhmeNiels HammerHanno SteinkeThe ligaments in coherence with the capsule of the hip joint are known to contribute to hip stability. Nevertheless, the contribution of the mechanical properties of the ligaments and gender- or side-specific differences are still not completely clear. To date, comparisons of the hip capsule ligaments to other tissues stabilizing the pelvis and hip joint, e.g. the iliotibial tract, were not performed.Hip capsule ligaments were obtained from 17 human cadavers (9 females, 7 males, 13 left and 8 right sides, mean age 83.65 ± 10.54 years). 18 iliofemoral, 9 ischiofemoral and 17 pubofemoral ligaments were prepared. Uniaxial stress-strain properties were obtained from the load-deformation curves before the secant elastic modulus was computed. Strain, elastic modulus and cross sections were compared.Strain and elastic modulus revealed no significant differences between the iliofemoral (strain 129.8 ± 11.1%, elastic modulus 48.8 ± 21.4 N/mm2), ischiofemoral (strain 128.7 ± 13.7%, elastic modulus 37.5 ± 20.4 N/mm2) and pubofemoral (strain 133.2 ± 23.7%, elastic modulus 49.0 ± 32.1 N/mm2) ligaments. The iliofemoral ligament (53.5 ± 15.1 mm2) yielded a significantly higher cross section compared to the ischiofemoral (19.2 ± 13.2 mm2) and pubofemoral (15.2 ± 7.2 mm2) ligament. No significant gender- or side-specific differences were determined. A comparison to the published data on the iliotibial tract revealed lower elasticity and less variation in the ligaments of the hip joint.Comparison of the mechanical data of the hip joint ligaments indicates that their role may likely exceed a function as a mechanical stabilizer. Uniaxial testing of interwoven collagen fibers might lead to a misinterpretation of the mechanical properties of the hip capsule ligaments in the given setup, concealing its uniaxial properties. This underlines the need for a polyaxial test setup using fresh and non-embalmed tissues.http://europepmc.org/articles/PMC5042535?pdf=render |
| spellingShingle | Philipp Pieroh Sebastian Schneider Uwe Lingslebe Freddy Sichting Thomas Wolfskämpf Christoph Josten Jörg Böhme Niels Hammer Hanno Steinke The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. PLoS ONE |
| title | The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. |
| title_full | The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. |
| title_fullStr | The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. |
| title_full_unstemmed | The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. |
| title_short | The Stress-Strain Data of the Hip Capsule Ligaments Are Gender and Side Independent Suggesting a Smaller Contribution to Passive Stiffness. |
| title_sort | stress strain data of the hip capsule ligaments are gender and side independent suggesting a smaller contribution to passive stiffness |
| url | http://europepmc.org/articles/PMC5042535?pdf=render |
| work_keys_str_mv | AT philipppieroh thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT sebastianschneider thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT uwelingslebe thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT freddysichting thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT thomaswolfskampf thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT christophjosten thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT jorgbohme thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT nielshammer thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT hannosteinke thestressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT philipppieroh stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT sebastianschneider stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT uwelingslebe stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT freddysichting stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT thomaswolfskampf stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT christophjosten stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT jorgbohme stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT nielshammer stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness AT hannosteinke stressstraindataofthehipcapsuleligamentsaregenderandsideindependentsuggestingasmallercontributiontopassivestiffness |