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Ashton DM, Blaker CL, Hartnell N, Haubruck P, Liu Y, Hefferan SA, Little CB, Clarke EC. The Biomechanical, Biochemical, and Morphological Properties of 19 Human Cadaveric Lower Limb Tendons and Ligaments: An Open-Access Data Set. Am J Sports Med 2024:3635465241260054. [PMID: 38910352 DOI: 10.1177/03635465241260054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
BACKGROUND Methodological heterogeneity hinders data comparisons across isolated studies of tendon and ligament properties, limiting clinical understanding and affecting the development and evaluation of replacement materials. PURPOSE To create an open-access data set on the morphological, biomechanical, and biochemical properties of clinically important tendons and ligaments of the lower limb, using consistent methodologies, to enable direct tendon/ligament comparisons. STUDY DESIGN Descriptive laboratory study. METHODS Nineteen distinct lower limb tendons and ligaments were retrieved from 8 fresh-frozen human cadavers (5 male, 3 female; aged 49-65 years) including Achilles, tibialis posterior, tibialis anterior, fibularis (peroneus) longus, fibularis (peroneus) brevis, flexor hallucis longus, extensor hallucis longus, plantaris, flexor digitorum longus, quadriceps, patellar, semitendinosus, and gracilis tendons; anterior cruciate, posterior cruciate, medial collateral, and lateral collateral ligaments; and 10 mm-wide grafts from the contralateral quadriceps and patellar tendons. Outcomes included morphology (tissue length, ultrasound-quantified cross-sectional area [CSAUS], and major and minor axes), biomechanics (failure load, ultimate tensile strength [UTS], failure strain, and elastic modulus), and biochemistry (sulfated glycosaminoglycan [sGAG] and hydroxyproline contents). Tissue differences were analyzed using mixed-model regression. RESULTS There was a range of similarities and differences between tendons and ligaments across outcomes. A key finding relating to potential graft tissue suitability was the comparable failure loads, UTS, CSAUS, sGAG, and hydroxyproline present between hamstring tendons (a standard graft source) and 5 tendons not typically used for grafting: fibularis (peroneus) longus and brevis, flexor and extensor hallucis longus, and flexor digitorum longus tendons. CONCLUSION This study of lower limb tendons and ligaments has enabled direct comparison of morphological, biomechanical, and biochemical human tissue properties-key factors in the selection of suitable graft tissues. This analysis has identified 6 potential new donor tissues with properties comparable to currently used grafts. CLINICAL RELEVANCE This extensive data set reduces the need to utilize data from incompatible sources, which may aid surgical decisions (eg, evidence to expand the range of tendons considered suitable for use as grafts) and may provide congruent design inputs for new biomaterials and computational models. The complete data set has been provided to facilitate further investigations, with the capacity to expand the resource to include additional outcomes and tissues.
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Affiliation(s)
- Dylan M Ashton
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Carina L Blaker
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Nicholas Hartnell
- Bone Ligament and Tendon Pty Ltd, Bowral, New South Wales, Australia
| | - Patrick Haubruck
- Heidelberg Trauma Research Group, Centre for Orthopaedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, Heidelberg, Germany
- Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Ying Liu
- Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Samantha A Hefferan
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Christopher B Little
- Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Elizabeth C Clarke
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Sydney Musculoskeletal Health, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
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Singal K, Dimitriyev MS, Gonzalez SE, Cachine AP, Quinn S, Matsumoto EA. Programming mechanics in knitted materials, stitch by stitch. Nat Commun 2024; 15:2622. [PMID: 38521784 PMCID: PMC10960873 DOI: 10.1038/s41467-024-46498-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/29/2024] [Indexed: 03/25/2024] Open
Abstract
Knitting turns yarn, a 1D material, into a 2D fabric that is flexible, durable, and can be patterned to adopt a wide range of 3D geometries. Like other mechanical metamaterials, the elasticity of knitted fabrics is an emergent property of the local stitch topology and pattern that cannot solely be attributed to the yarn itself. Thus, knitting can be viewed as an additive manufacturing technique that allows for stitch-by-stitch programming of elastic properties and has applications in many fields ranging from soft robotics and wearable electronics to engineered tissue and architected materials. However, predicting these mechanical properties based on the stitch type remains elusive. Here we untangle the relationship between changes in stitch topology and emergent elasticity in several types of knitted fabrics. We combine experiment and simulation to construct a constitutive model for the nonlinear bulk response of these fabrics. This model serves as a basis for composite fabrics with bespoke mechanical properties, which crucially do not depend on the constituent yarn.
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Affiliation(s)
- Krishma Singal
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Michael S Dimitriyev
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, 01003, USA
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Sarah E Gonzalez
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - A Patrick Cachine
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sam Quinn
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Elisabetta A Matsumoto
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
- International Institute for Sustainability with Knotted Chiral Meta Matter (WPI-SKCM2), Hiroshima University, Higashihiroshima, 739-8526, Japan.
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Liu C, Zhu JX, Hu YL, Jiao C, Guo QW, Ao YF. Secondary Effects of the Rupture and Reconstruction of the Interosseous Talocalcaneal Ligament on the Peritalar Joints. Med Sci Monit 2021; 27:e925292. [PMID: 33402662 PMCID: PMC7798367 DOI: 10.12659/msm.925292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background The interosseous talocalcaneal ligament (ITCL) is the main soft-tissue contributor to subtalar joint stability. The role of ITCL reconstruction in retaining this stability is minimally reported. Therefore, we conducted this study to investigate the effects of rupture and reconstruction of the ITCL on the subtalar and peritalar joints. Material/Methods This experimental study randomly divided 72 rabbits into 3 equal groups of 24 rabbits each. Group I underwent reconstruction surgery, group II underwent resection, and group III was the control group. The cartilages between the talocrural and calcaneocrural joints, and between the subtalar and talonavicular joints on both sides were assessed by gross observation, ink staining, histology, and immunohistochemistry at weeks 4, 8, 16, and 32, postoperatively. Results In group II, the quantitative ink staining analysis revealed degeneration of the articular cartilages on the talonavicular joint (T=2.070, P=0.038) and the posterior subtalar joint (T=2.121, P=0.034) compared with the 2 sides of the same rabbit at 4 and 8 postoperative weeks. Comparing the operated sides of all the groups showed the posterior subtalar joints (Hc=9.563, P=0.008) and talonavicular joints (Hc=9.714, P=0.008) had an obvious difference at postoperative week 4; and in the calcaneocrural joints (Hc=6.750, P=0.034), it was noticed at postoperative week 8. Histology and immunohistochemistry findings confirm these observations. Conclusions An ITCL resection can lead to the progressive degeneration of the talonavicular and posterior subtalar joints, while an ITCL reconstruction can be beneficial in restoring the stability of these joints, preventing or postponing their degeneration, and protecting the articular cartilages.
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Affiliation(s)
- Chen Liu
- Department of Orthopaedics, Peking University International Hospital, Beijing, China (mainland)
| | - Jing-Xian Zhu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China (mainland)
| | - Yue-Lin Hu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China (mainland)
| | - Chen Jiao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China (mainland)
| | - Qin-Wei Guo
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China (mainland)
| | - Ying-Fang Ao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China (mainland)
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