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Li S, Wang S, Shao J, Wang J, Liu W, Chen L, Li Z, Zhang C, Song J. Toward the Improvement of the Mechanical and Tribological Properties of Braided Ligament for ACL Reconstruction: A "Carrot and Stick" Strategy. Adv Healthc Mater 2024; 13:e2304133. [PMID: 38484144 DOI: 10.1002/adhm.202304133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/21/2024] [Indexed: 05/03/2024]
Abstract
Bone tunnel enlargement has been troubling the clinical adoption of braided artificial ligaments for decades, to which mechanical and tribological performance promotion shall be an effective and promising approach. Herein, a "carrot and stick" strategy has been introduced with two types of polyethylene terephthalate (PET) fibers to fabricate hybrid textures, which is expected to advance fatigue and tribological performance without yielding essential mechanical strength and biocompatibility. Owing to advancements in such a "carrot and stick" strategy, the obtained grafts present three promising properties: i) enhancement of mechanical strength; ii) coefficient of friction (COF) reduction of 25% at the greatest extent, thus lowering the risk of bone tunnel enlargement; iii) final displacement shrinkage of graft length after cyclic loadings, favored in the clinic for isometric reconstruction. The results obtained in this study show that the "carrot and stick" strategy can be a creative and convenient method to optimize the service life, saving the complication rate of artificial ligaments for clinical applications.
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Affiliation(s)
- Shenglin Li
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
- Shenzhen Institute for Drug Control, Shenzhen Testing Center of Medical Devices, Shenzhen, 518057, China
| | - Shuhan Wang
- Shenzhen Institute for Drug Control, Shenzhen Testing Center of Medical Devices, Shenzhen, 518057, China
| | - Jiasheng Shao
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Jiali Wang
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Wenliang Liu
- Shenzhen Institute for Drug Control, Shenzhen Testing Center of Medical Devices, Shenzhen, 518057, China
| | - Linxin Chen
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Zeng Li
- Department of Orthopedics, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Chao Zhang
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Jian Song
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
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Burgio V, Casari S, Milizia M, Sanna F, Spezia G, Civera M, Rodriguez Reinoso M, Bertuglia A, Surace C. Mechanical properties of animal ligaments: a review and comparative study for the identification of the most suitable human ligament surrogates. Biomech Model Mechanobiol 2023; 22:1645-1683. [PMID: 37169958 PMCID: PMC10511400 DOI: 10.1007/s10237-023-01718-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 03/29/2023] [Indexed: 05/13/2023]
Abstract
The interest in the properties of animal soft tissues is often related to the desire to find an animal model to replace human counterparts due to the unsteady availability of human tissues for experimental purposes. Once the most appropriate animal model is identified, it is possible to carry out ex-vivo and in-vivo studies for the repair of ligamentous tissues and performance testing of replacement and support healing devices. This work aims to present a systematic review of the mechanical properties of ligaments reported in the scientific literature by considering different anatomical regions in humans and several animal species. This study was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method. Moreover, considering the lack of a standard protocol for preconditioning of tissues, this aspect is also addressed. Ninety-six studies were selected for the systematic review and analysed. The mechanical properties of different animal species are reported and summarised in tables. Only results from studies reporting the strain rate parameter were considered for comparison with human ligaments, as they were deemed more reliable. Elastic modulus, ultimate tensile stress, and ultimate strain properties are graphically reported identifying the range of values for each animal species and to facilitate comparison between values reported in the scientific literature in animal and human ligaments. Useful similarities between the mechanical properties of swine, cow, and rat and human ligaments have been found.
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Affiliation(s)
- V. Burgio
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - S. Casari
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - M. Milizia
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - F. Sanna
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - G. Spezia
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - M. Civera
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - M. Rodriguez Reinoso
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
| | - A. Bertuglia
- Department of Veterinary Science, University of Turin, Largo Paolo Braccini 2-5, 10095 Grugliasco, Italy
| | - C. Surace
- Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, 10129 Turin, Italy
- Department of Structural, Geotechnical and Building Engineering, Laboratory of Bio-Inspired Nanomechanics, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Turin, Italy
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Mohan R, Kwaees TA, Thomas T, Pydisetty R. Cohort study of short-term outcomes after ACL-reconstruction using autograft with internal brace reinforcement versus isolated autograft demonstrating no significant difference. J Orthop 2023; 43:115-120. [PMID: 37593689 PMCID: PMC10429725 DOI: 10.1016/j.jor.2023.07.030] [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] [Received: 04/28/2023] [Revised: 07/23/2023] [Accepted: 07/28/2023] [Indexed: 08/19/2023] Open
Abstract
Background The gold standard treatment for Anterior Cruciate Ligament injury is reconstruction (ACL-R). Graft failure is the concern and ensuring a durable initial graft with rapid integration is crucial. Graft augmentation with implantable devices (internal brace reinforcement) is a technique purported to reduce the risk of rupture and hasten recovery. Few studies have examined these techniques, in particular when compared to non-augmented grafts. This study assesses the short-term outcome of ACL-R using augmented and non-augmented hamstring tendon autografts. Methods This was a retrospective cohort study comparing augmented and non-augmented ACL-R. All procedures were performed in a single centre using the same technique. The Knee injury and Osteoarthritis Outcome Score [KOOS] was used to assess patient-reported outcomes. Results There were 70 patients in the augmented and 111 patients in the control group. Mean graft diameter in the augmented group was 8.82 mm versus 8.44 mm in the non-augmented. Six strand graft was achievable in 73.5% of the augmented group compared to 33% in the non-augmented group. Two graft failures were reported in the non-augmented group and none in the augmented group. Patient satisfaction rates were higher in the augmented group. There was a statistically insignificant improvement in the postoperative KOOS in the augmented group compared to the non-augmented group (p 0.6). Irrespective of augmentation status, no correlation was found between the functional score and age, or femoral tunnel width. Conclusion No statistically significant difference was demonstrated in the short-term functional outcome of ACL reconstruction using an augmented or non-augmented hamstring graft. Augmented ACL-R may achieve superior graft diameters, failure rates and patient reported outcomes when compared to nonaugmented ACL-R. Prospective trials are needed to examine this further.
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Affiliation(s)
- Rahul Mohan
- Mersey and West Lancashire Teaching Hospitals NHS Trust, Whiston Hospital, Prescot, L35 5DR, United Kingdom
| | - Tariq Adam Kwaees
- Mersey and West Lancashire Teaching Hospitals NHS Trust, Whiston Hospital, Prescot, L35 5DR, United Kingdom
| | - Terin Thomas
- Mersey and West Lancashire Teaching Hospitals NHS Trust, Whiston Hospital, Prescot, L35 5DR, United Kingdom
| | - Ravi Pydisetty
- Mersey and West Lancashire Teaching Hospitals NHS Trust, Whiston Hospital, Prescot, L35 5DR, United Kingdom
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Tang C, Kwaees TA, Accadbled F, Turati M, Green DW, Nicolaou N. Surgical techniques in the management of pediatric anterior cruciate ligament tears: Current concepts. J Child Orthop 2023; 17:12-21. [PMID: 36755552 PMCID: PMC9900020 DOI: 10.1177/18632521221149059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/14/2022] [Indexed: 01/16/2023] Open
Abstract
Background Anterior cruciate ligament injury in the child and adolescent patient remains a controversial topic when considering management, especially regarding surgical choices. Treatment variations are seen not just when comparing different countries but also within nations. This arises partly as contemporary treatment is mostly inferred from the adult population who physiologically and in terms of outcomes differ significantly from children. There is an increasing body of evidence for this cohort of patients who have specific challenges and difficulties when determining the optimum treatment. Methods Within this article, we will summarize the current evidence for surgical management of anterior cruciate ligament injury for the pediatric patient. Results and Conclusions There remain many controversies and gaps inthe treatment of Paediatric Anterior cruciate ligament reconstruction and this high risk cohort continues to cause difficulty in identifying the best mode of surgical management. Level of evidence level IV.
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Affiliation(s)
- Chun Tang
- Department of Paediatric Orthopaedics and Spinal Surgery, Sheffield Children’s Hospital, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
| | - Tariq Adam Kwaees
- Department of Paediatric Orthopaedics and Spinal Surgery, Sheffield Children’s Hospital, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
| | - Franck Accadbled
- Department of Orthopaedics, Children’s Hospital, CHU de Toulouse, Toulouse, France
| | - Marco Turati
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Transalpine Center of Pediatric Sports Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Orthopedic Department, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
- Department of Paediatric Orthopedic Surgery, Hospital Couple Enfant, Grenoble Alpes University, Grenoble, France
| | - Daniel W Green
- Department of Pediatric Orthopedics, Hospital for Special Surgery, New York, NY, USA
| | - Nicolas Nicolaou
- Department of Paediatric Orthopaedics and Spinal Surgery, Sheffield Children’s Hospital, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
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Yu Y, Lv B, Wu J, Chen W. Mussel-Based Biomimetic Strategies in Musculoskeletal Disorder Treatment: From Synthesis Principles to Diverse Applications. Int J Nanomedicine 2023; 18:455-472. [PMID: 36718191 PMCID: PMC9884062 DOI: 10.2147/ijn.s386635] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 12/03/2022] [Indexed: 01/26/2023] Open
Abstract
Musculoskeletal disorders are the second leading cause of disability worldwide, posing a huge global burden to the public sanitation system. Currently, tissue engineering-based approaches act as effective strategies, which are, however, challenging in limited application scenarios. Mussel-based biomimetic materials, exhibit numerous unique properties such as intense adhesion, biocompatibility, moisture resistance, and injectability, to name only a few, and have attracted extensive research interest. In particular, featuring state-of-the-art properties, mussel-inspired biomaterials have been widely explored in innumerable musculoskeletal disorder treatments including osteochondral defects, osteosarcoma, osteoarthritis, ligament rupture, and osteoporosis. Nevertheless, a comprehensive and timely discussion of their applications in musculoskeletal disorders is insufficient. In this review, we emphasize on (1) the main categories and characteristics of mussel foot proteins and their fundamental mechanisms for the spectacular adhesion in mussels; (2) the diverse synthetic methods and modification of various polymers; and (3) the emerging applications of mussel-biomimetic materials, the future perspectives, and challenges, especially in the area of musculoskeletal disorder. We envision that this review will provide a unique and insightful perspective to improve the development of a new generation of mussel biomimetic strategies.
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Affiliation(s)
- Yajie Yu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China,Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Hubei Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China
| | - Bin Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Juntao Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Wei Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Hubei Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Correspondence: Wei Chen, Email
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Maeztu Redin D, Caroux J, Rohan PY, Pillet H, Cermolacce A, Trnka J, Manassero M, Viateau V, Corté L. A wear model to predict damage of reconstructed ACL. J Mech Behav Biomed Mater 2022; 136:105426. [PMID: 36208581 DOI: 10.1016/j.jmbbm.2022.105426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/07/2022] [Accepted: 08/20/2022] [Indexed: 11/28/2022]
Abstract
Impingement with surrounding tissues is a major cause of failure of anterior cruciate ligament reconstruction. However, the complexity of the knee kinematics and anatomical variations make it difficult to predict the occurrence of contact and the extent of the resulting damage. Here we hypothesise that a description of wear between the reconstructed ligament and adjacent structures captures the in vivo damage produced with physiological loadings. To test this, we performed an in vivo study on a sheep model and investigated the role of different sources of damage: overstretching, excessive twist, excessive compression, and wear. Seven sheep underwent cranial cruciate ligament reconstruction using a tendon autograft. Necropsy observations and pull-out force measurements performed postoperatively at three months showed high variability across specimens of the extent and location of graft damage. Using 3D digital models of each stifle based on X-ray imaging and kinematics measurements, we determined the relative displacements between the graft and the surrounding bones and computed a wear index describing the work of friction forces underwent by the graft during a full flexion-extension movement. While tensile strain, angle of twist and impingement volume showed no correlation with pull-out force (ρ = -0.321, p = 0.498), the wear index showed a strong negative correlation (r = -0.902, p = 0.006). Moreover, contour maps showing the distribution of wear on the graft were consistent with the observations of damage during the necropsy. These results demonstrate that wear is a good proxy of graft damage. The proposed wear index could be used in implant design and surgery planning to minimise the risk of implant failure. Its application to sheep can provide a way to increase preclinical testing efficiency.
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Affiliation(s)
- Deyo Maeztu Redin
- Centre des Matériaux, Mines Paris, PSL University, Évry, France; Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, PSL University, Paris, France.
| | - Julien Caroux
- Centre des Matériaux, Mines Paris, PSL University, Évry, France; Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, PSL University, Paris, France
| | - Pierre-Yves Rohan
- Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers Institute of Technology, Paris, France
| | - Hélène Pillet
- Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers Institute of Technology, Paris, France
| | - Alexia Cermolacce
- Ecole Nationale Vétérinaire d'Alfort, Université Paris Est Sup, France
| | - Julien Trnka
- Ecole Nationale Vétérinaire d'Alfort, Université Paris Est Sup, France
| | - Mathieu Manassero
- Ecole Nationale Vétérinaire d'Alfort, Université Paris Est Sup, France; Laboratoire de Biologie, Bioingénierie et Bioimagerie Ostéo-Articulaire, UMR CNRS 7052, INSERM U1271, 75010, Paris, France
| | - Véronique Viateau
- Ecole Nationale Vétérinaire d'Alfort, Université Paris Est Sup, France; Laboratoire de Biologie, Bioingénierie et Bioimagerie Ostéo-Articulaire, UMR CNRS 7052, INSERM U1271, 75010, Paris, France
| | - Laurent Corté
- Centre des Matériaux, Mines Paris, PSL University, Évry, France; Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, PSL University, Paris, France
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Amini M, Venkatesan JK, Liu W, Leroux A, Nguyen TN, Madry H, Migonney V, Cucchiarini M. Advanced Gene Therapy Strategies for the Repair of ACL Injuries. Int J Mol Sci 2022; 23:ijms232214467. [PMID: 36430947 PMCID: PMC9695211 DOI: 10.3390/ijms232214467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/07/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
The anterior cruciate ligament (ACL), the principal ligament for stabilization of the knee, is highly predisposed to injury in the human population. As a result of its poor intrinsic healing capacities, surgical intervention is generally necessary to repair ACL lesions, yet the outcomes are never fully satisfactory in terms of long-lasting, complete, and safe repair. Gene therapy, based on the transfer of therapeutic genetic sequences via a gene vector, is a potent tool to durably and adeptly enhance the processes of ACL repair and has been reported for its workability in various experimental models relevant to ACL injuries in vitro, in situ, and in vivo. As critical hurdles to the effective and safe translation of gene therapy for clinical applications still remain, including physiological barriers and host immune responses, biomaterial-guided gene therapy inspired by drug delivery systems has been further developed to protect and improve the classical procedures of gene transfer in the future treatment of ACL injuries in patients, as critically presented here.
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Affiliation(s)
- Mahnaz Amini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg, Germany
| | - Jagadeesh K. Venkatesan
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg, Germany
| | - Wei Liu
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg, Germany
| | - Amélie Leroux
- Laboratoire CSPBAT UMR CNRS 7244, Université Sorbonne Paris Nord, Avenue JB Clément, 93430 Villetaneuse, France
| | - Tuan Ngoc Nguyen
- Laboratoire CSPBAT UMR CNRS 7244, Université Sorbonne Paris Nord, Avenue JB Clément, 93430 Villetaneuse, France
| | - Henning Madry
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg, Germany
| | - Véronique Migonney
- Laboratoire CSPBAT UMR CNRS 7244, Université Sorbonne Paris Nord, Avenue JB Clément, 93430 Villetaneuse, France
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg, Germany
- Correspondence: or
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Zhou M, Long Y, Yu M, Guo J, Tang Y, Li F, Li Q, Zhang Y, Zheng Z, Hou J, Yang R. Allogeneic Tendon Transplantation for the Treatment of Pathological Patellar Ligament Defect in Children: Technical Note and 4-Year Follow-Up. Orthop Surg 2022; 14:3431-3440. [PMID: 36321600 PMCID: PMC9732635 DOI: 10.1111/os.13475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The absence of patellar ligament will bring about a severe negative impact on daily life. Many reconstruction techniques have been described in adults. However, there is a lack of technical introduction regarding the reconstruction of the patellar ligament in children. The purpose of this study was to report a surgical technique for reconstructing the patellar ligament in children. METHOD A retrospective analysis of the clinical data on a patellar ligament (tendon sheath fibroma) patient with allogeneic tendon reconstruction. An 8-year-old child with postoperative recurrence of left patellar ligament tumor was enrolled in our study. Anterior tibialis tendon allograft was used to reconstruct the patellar ligament after complete resection of the patellar ligament for the tumor. The tunnels were constructed on the deep surface of the tibial tubercle and the root of the quadriceps tendon (to decrease the harmful impact on patella development), respectively. The allogeneic tendon was passed through the tunnels above in the shape of "8," and the two ends of the tendon were attached to the bleeding bone bed at the inferior edge of the patella with suture anchors to achieve better bone-tendon healing. During the follow-up, the knee's range of motion and imaging manifestations were recorded. RESULT Postoperative pathology suggests chondromesenchymal hamartoma, a rare benign soft tissue tumor different from the previous operation (tendon sheath fibroma). During the 4-year follow-up, the patient's active range of motion of the knee achieved 0° to 120°; and the patient could walk normally without any external help. Physical examinations (the apprehension sign and J sign) showed no ligamentous instability or patellar ligament tenderness. Imaging analysis showed that the ratio length of the patellar ligament to the patella was almost normal. The integrity, continuity, and shape of the allogeneic ligament showed excellent results in MRI. Combined with clinical and imaging findings, allogeneic tendon patellar ligament reconstruction was deemed successful. CONCLUSION Allogeneic ligament reconstruction technique can provide a treatment option by reconstructing the extensor mechanism, minimizing the impact on patellar development, and augmenting biological healing for children with the absence of the patellar ligament.
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Affiliation(s)
- Min Zhou
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Yi Long
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Menglei Yu
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Jiang Guo
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Yiyong Tang
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Fangqi Li
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Qingyue Li
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Yuanhao Zhang
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Zhenze Zheng
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Jingyi Hou
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Rui Yang
- Department of OrthopedicsSun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
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Johnson TA, Conzemius MG. Outcome of cranial cruciate ligament replacement with an enhanced polyethylene terephthalate implant in the dog: A pilot clinical trial. Vet Surg 2022; 51:1215-1222. [PMID: 36165283 PMCID: PMC9827950 DOI: 10.1111/vsu.13889] [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] [Received: 04/23/2022] [Revised: 08/12/2022] [Accepted: 08/28/2022] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To assess the 6-month outcome and survival of enhanced polyethylene terephthalate (PET) implants as a replacement for the cranial cruciate ligament (CCL) in dogs with spontaneous CCL disease (CCLD). STUDY DESIGN Pilot, prospective case series. ANIMALS Ten client-owned large breed dogs with unilateral spontaneous CCLD. METHODS Dogs were evaluated before and 6 months after intra-articular placement of a PET implant with the Liverpool Osteoarthritis in Dogs questionnaire and force platform gait analysis. Arthroscopy was performed 6 months after surgery to visually assess implant integrity. RESULTS Scores on owner questionnaires and limb asymmetry improved in all dogs that reached the 6-month time point, by 51.7% (p = .008) and 86% (p = .002), respectively. The PET implant appeared intact and functioning in two stifles, partially intact and functioning in four stifles and completely torn in three stifles. One dog had an implant infection and was removed from the study. Evidence of deterioration and tearing occurred in the midbody of the implant. CONCLUSION Although function improved over the course of this study, only 2/10 implants appeared intact 6 months after placement. CLINICAL SIGNIFICANCE Implant survivability prohibits further clinical investigation using this implant.
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Affiliation(s)
- Tiffany A. Johnson
- Department of Veterinary Clinical SciencesUniversity of Minnesota, College of Veterinary MedicineSaint PaulMinnesotaUSA
| | - Michael G. Conzemius
- Department of Veterinary Clinical SciencesUniversity of Minnesota, College of Veterinary MedicineSaint PaulMinnesotaUSA
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Ebert JR, Nairn R, Breidahl W, Annear PT. Double-bundle anterior cruciate ligament reconstruction using autologous hamstrings with LARS augmentation demonstrates comparable outcomes to hamstrings alone, without evidence of synovitis or early osteoarthritis. Knee Surg Sports Traumatol Arthrosc 2022; 30:2320-2328. [PMID: 34839367 DOI: 10.1007/s00167-021-06801-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE To compare the clinical and radiological outcomes in patients undergoing anterior cruciate ligament reconstruction (ACLR) with, or without, LARS augmentation. METHODS One-hundred and thirty-six patients that underwent double-bundle ACLR with (DB Hams/LARS, n = 67), or without (DB Hams, n = 69), LARS augmentation, were assessed clinically and with Magnetic Resonance Imaging (MRI) at a minimum of 7-years post-surgery. Patients were assessed via patient-reported outcome measures (PROMs), KT-1000 (laxity), isokinetic knee extensor and flexor strength and a 4-hop test battery. Limb symmetry indices (LSIs) were calculated. The Whole-Organ Magnetic Resonance Imaging Score (WORMS) evaluated knee status via MRI. Sport participation, secondary operations, ACL re-tears and contralateral ACL tears were reported. RESULTS No differences (n.s.) were observed in demographics, PROMs, KT-1000 scores or strength and hop LSIs. Normal (< 3 mm side-to-side differences) KT-1000 scores were observed in 64 (92.8%) and 59 (88.1%) of DB Hams and DB Hams/LARS patients, respectively. Comparative rates of satisfaction were reported. Knee flexor strength and hop test LSIs were all ˃95% in both groups, which was 94.2% and 96.7% for knee extensor strength in the DB Hams and DB Hams/LARS cohorts, respectively. While 53 (76.8%) and 52 (77.6%) of the DB Hams and DB Hams/LARS patients had returned to pivoting sports, 42 (60.9%) and 41 (61.2%) were participating in pivoting sports at the minimum 7-year review. No difference (n.s.) was observed in the WORMS (12.3 DB Hams, 16.7 DB Hams/LARS). Of the cohort assessed, 8 (11%) DB Hams and 11 (16%) DB Hams/LARS patients had undergone secondary surgery. In addition to one patient in each group that demonstrated ACL rupture on MRI, an additional cohort of patients were excluded from the current analysis due to prior re-tear (DB Hams n = 6, DB Hams/LARS n = 8) or contralateral ACL tear (DB Hams n = 4, DB Hams/LARS n = 4). CONCLUSIONS Comparable outcomes were observed after double-bundle ACLR using autologous hamstrings with, or without, LARS augmentation. Therefore, while these outcomes do not justify the additional use of synthetic augmentation given the lack of further benefit and additional cost, higher rates of graft failure, synovitis and early osteoarthritic change previously reported were not observed. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Jay R Ebert
- The School of Human Sciences (Exercise and Sport Science), The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia. .,HFRC Rehabilitation Clinic, 117 Stirling Highway, Nedlands, WA, 6009, Australia.
| | - Robert Nairn
- Perth Radiological Clinic, Subiaco, Perth, WA, 6008, Australia
| | | | - Peter T Annear
- Perth Orthopaedic and Sports Medicine Centre, West Perth, WA, 6005, Australia
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11
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Materials Properties and Application Strategy for Ligament Tissue Engineering. J Med Biol Eng 2022. [DOI: 10.1007/s40846-022-00706-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Li H, Jiang F, Ge Y, Wan F, Li H, Chen S. Differences in artificial ligament graft osseointegration of the anterior cruciate ligament in a sheep model: a comparison between interference screw and cortical suspensory fixation. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1370. [PMID: 34733922 PMCID: PMC8506542 DOI: 10.21037/atm-21-1076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 07/14/2021] [Indexed: 11/28/2022]
Abstract
Background Interference screws are the most common femoral fixation for anterior cruciate ligament (ACL) reconstruction with polyethylene terephthalate (PET) artificial ligaments. However, interference screws have several disadvantages, such as the risk of one tunnel blowout and damage to the graft. Suspensory fixations have the advantages of high tensile strength and promotion of graft bone contact. The purpose of this study was to compare PET artificial ligament graft osseointegration between interference screw fixation (ISF) and cortical suspensory fixation (CSF) for ACL reconstruction. Methods Forty sheep underwent ACL reconstruction of the right knee with PET artificial ligament. The graft was fixed with ISF or CSF for femoral fixation. Animals were randomly assigned to the ISF (n=20) or the CSF (n=20) groups. The sheep were sacrificed at 3 or 12 months postoperatively for biomechanical tests, micro computed tomography (micro-CT) scans, and histological assessments. Results The mean load-to-failure between the CSF group (836±355 N) appeared higher than that of the ISF group (604±277 N) at 3 months, but no significant difference was detected between the groups (P=0.24). At 12 months, there was also no significant difference in load-to-failure between the CSF and ISF groups (1,194±350 vs. 1,097±764 N; P=0.78). According to the micro-CT scan results, the femoral bone tunnel diameter of the ISF group appeared larger than that of the CSF group at 3 months (12±1 vs. 10±1 mm; P=0.02) and similar to that of the CSF group at 12 months (12±1 vs. 11±2 mm; P=0.38). Furthermore, histological results showed that at the graft-tunnel interface of the femoral tunnel aperture, disoriented fibers formed in the ISF group while oriented and dense fibers formed in the CSF group. Conclusions ACLR with synthetic ligament by cortical suspension devices with adjustable loops demonstrated a better graft-bone healing capacity at the femoral tunnel aperture compared with that from titanium interference screws over 12 months postoperatively. No significant difference was found in biomechanical strength between the two fixation methods during the early healing stage.
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Affiliation(s)
- Hong Li
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
| | - Fangyi Jiang
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
| | - Yunsheng Ge
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
| | - Fang Wan
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
| | - Hongyun Li
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
| | - Shiyi Chen
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
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13
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Aujla RS, Ebert JR, Annear PT. Anterior Cruciate Ligament Reconstruction Using Autologous Hamstrings Augmented With the Ligament Augmentation and Reconstruction System Versus Hamstrings Alone: A Comparative Cohort Study. Orthop J Sports Med 2021; 9:23259671211046631. [PMID: 34708141 PMCID: PMC8543570 DOI: 10.1177/23259671211046631] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 06/08/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Few studies have reported the return-to-sports (RTS) rate in patients after augmentation of autologous anterior cruciate ligament reconstruction (ACLR) with the Ligament Augmentation and Reconstruction System (LARS). PURPOSE/HYPOTHESIS The purpose of this study was to compare postoperative outcomes in patients who underwent ACLR with single-bundle 4-strand hamstring autograft either without augmentation (HA-ACLR group) or with LARS augmentation (AUG-ACLR group). It was hypothesized that clinical outcomes and RTS rates would be better in the AUG-ACLR group at the 1-year follow-up, with similar outcomes in both cohorts by 2 years. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Patients who underwent ACLR between April 2014 and December 2017 were included in the current comparative study if they were skeletally mature and had 1- and 2-year follow-up outcomes; patients with concomitant meniscal surgery were also included. Included were 66 patients with AUG-ACLR (mean age, 26.8 years; 67% male) and 130 patients with HA-ACLR (mean age, 27.5 years; 61% male). Subjective outcome measures included the International Knee Documentation Committee Subjective Knee Evaluation Form, Knee injury and Osteoarthritis Outcome Score, Lysholm scale, Tegner activity scale, and the Noyes sports activity rating scale. Objective measures included knee laxity, maximal isokinetic knee flexion and extension strength, and the results of 4 functional hop tests. RESULTS There were no significant differences between the study groups in age, sex distribution, body mass index, time to surgery, or number of concurrent meniscal surgeries. At the 1-year follow-up, the AUG-ACLR group had a significantly higher Tegner score (P = .001) and rates of RTS (P = .029) and return to preinjury level of sport (P = .003) compared with the HA-ACLR group. At the 2-year follow-up, there were no differences in these measures between groups. There were no between-group differences in other subjective outcomes, knee laxity, or strength and hop test results at either postoperative time point. There were also no differences in rerupture rates or other complications between the groups. CONCLUSION Patients with AUG-ACLR had higher 1-year postoperative Tegner scores and rates of RTS and preoperative sport level compared with the HA-ACLR group. The 2-year rerupture rate for the AUG-ACLR group was low, and no intra-articular inflammatory complications were noted.
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Affiliation(s)
- Randeep S. Aujla
- Perth Orthopaedic and Sports Medicine Centre, Perth, Western Australia, Australia
| | - Jay R. Ebert
- School of Human Sciences (Exercise and Sport Science), University of Western Australia, Crawley, Western Australia, Australia
- HFRC Rehabilitation Clinic, Nedlands, Western Australia, Australia
| | - Peter T. Annear
- Perth Orthopaedic and Sports Medicine Centre, Perth, Western Australia, Australia
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14
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Oláh T, Cai X, Michaelis JC, Madry H. Comparative anatomy and morphology of the knee in translational models for articular cartilage disorders. Part I: Large animals. Ann Anat 2021; 235:151680. [PMID: 33548412 DOI: 10.1016/j.aanat.2021.151680] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/08/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND The human knee is a complex joint, and affected by a variety of articular cartilage disorders. Large animal models are critical to model the complex disease mechanisms affecting a functional joint. Species-dependent differences highly affect the results of a pre-clinical study and need to be considered, necessitating specific knowledge not only of macroscopic and microscopic anatomical and pathological aspects, but also characteristics of their individual gait and joint movements. METHODS Literature search in Pubmed. RESULTS AND DISCUSSION This narrative review summarizes the most relevant anatomical structural and functional characteristics of the knee (stifle) joints of the major translational large animal species, comprising dogs, (mini)pigs, sheep, goats, and horses in comparison with humans. Specific characteristics of each species, including kinematical gait parameters are provided. Considering these multifactorial dimensions will allow to select the appropriate model for answering the research questions in a clinically relevant fashion.
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Affiliation(s)
- Tamás Oláh
- Center of Experimental Orthopaedics, Saarland University, Homburg, Germany
| | - Xiaoyu Cai
- Center of Experimental Orthopaedics, Saarland University, Homburg, Germany
| | | | - Henning Madry
- Center of Experimental Orthopaedics, Saarland University, Homburg, Germany; Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany.
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15
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Kawakami Y, Nonaka K, Fukase N, Amore AD, Murata Y, Quinn P, Luketich S, Takayama K, Patel KG, Matsumoto T, Cummins JH, Kurosaka M, Kuroda R, Wagner WR, Fu FH, Huard J. A Cell-free Biodegradable Synthetic Artificial Ligament for the Reconstruction of Anterior Cruciate Ligament in a Rat Model. Acta Biomater 2021; 121:275-287. [PMID: 33129986 DOI: 10.1016/j.actbio.2020.10.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 12/16/2022]
Abstract
Traditional Anterior Cruciate Ligament (ACL) reconstruction is commonly performed using an allograft or autograft and possesses limitations such as donor site morbidity, decreased range of motion, and potential infection. However, a biodegradable synthetic graft could greatly assist in the prevention of such restrictions after ACL reconstruction. In this study, artificial grafts were generated using "wet" and "dry" electrospinning processes with a biodegradable elastomer, poly (ester urethane) urea (PEUU), and were evaluated in vitro and in vivo in a rat model. Four groups were established: (1) Wet PEUU artificial ligament, (2) Dry PEUU artificial ligament, (3) Dry polycaprolactone artificial ligament (PCL), and (4) autologous flexor digitorum longus tendon graft. Eight weeks after surgery, the in vivo tensile strength of wet PEUU ligaments had significantly increased compared to the other synthetic ligaments. These results aligned with increased infiltration of host cells and decreased inflammation within the wet PEUU grafts. In contrast, very little cellular infiltration was observed in PCL and dry PEUU grafts. Micro-computed tomography analysis performed at 4 and 8 weeks postoperatively revealed significantly smaller bone tunnels in the tendon autograft and wet PEUU groups. The Wet PEUU grafts served as an adequate functioning material and allowed for the creation of tissues that closely resembled the ACL.
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Affiliation(s)
- Yohei Kawakami
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA 15213; Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA 15219; Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Kazuhiro Nonaka
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Naomasa Fukase
- Steadman Philippon Research Institute, Vail CO 81657; Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Antonio D' Amore
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Yoichi Murata
- Steadman Philippon Research Institute, Vail CO 81657
| | - Patrick Quinn
- Steadman Philippon Research Institute, Vail CO 81657
| | - Samuel Luketich
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Koji Takayama
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA 15213; Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA 15219; Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Kunj G Patel
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA 15213; Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA 15219
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | | | - Masahiro Kurosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - William R Wagner
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Freddie H Fu
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA 15213
| | - Johnny Huard
- Steadman Philippon Research Institute, Vail CO 81657.
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Rangel A, Nguyen TN, Egles C, Migonney V. Different real‐time degradation scenarios of functionalized poly(ε‐caprolactone) for biomedical applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.50479] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- André Rangel
- Laboratoire de Biomatériaux pour la Santé (LBPS), Laboratoire de Chimie Structures, Proprietés de Biomateriaux et d'Agents Thérapeutiques (CSPBAT), UMR CNRS 7244, Université Sorbonne Paris Nord Villetaneuse France
| | - Tuan Ngoc Nguyen
- Laboratoire de Biomatériaux pour la Santé (LBPS), Laboratoire de Chimie Structures, Proprietés de Biomateriaux et d'Agents Thérapeutiques (CSPBAT), UMR CNRS 7244, Université Sorbonne Paris Nord Villetaneuse France
| | - Christophe Egles
- BioMécanique et BioIngénierie (BMBI) Alliance Sorbonne université, Université de Technologie de Compiègne, CNRS, UMR 7338 , Centre de recherche Royallieu Compiègne cedex France
| | - Véronique Migonney
- Laboratoire de Biomatériaux pour la Santé (LBPS), Laboratoire de Chimie Structures, Proprietés de Biomateriaux et d'Agents Thérapeutiques (CSPBAT), UMR CNRS 7244, Université Sorbonne Paris Nord Villetaneuse France
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17
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Rangel A, Colaço L, Nguyen N, Grosset JF, Egles C, Migonney V. Adapting Mechanical Characterization of a Biodegradable Polymer to Physiological Approach of Anterior Cruciate Ligament Functions. Ing Rech Biomed 2020. [DOI: 10.1016/j.irbm.2020.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Eivazzadeh-Keihan R, Bahojb Noruzi E, Khanmohammadi Chenab K, Jafari A, Radinekiyan F, Hashemi SM, Ahmadpour F, Behboudi A, Mosafer J, Mokhtarzadeh A, Maleki A, Hamblin MR. Metal-based nanoparticles for bone tissue engineering. J Tissue Eng Regen Med 2020; 14:1687-1714. [PMID: 32914573 DOI: 10.1002/term.3131] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 08/25/2020] [Accepted: 09/03/2020] [Indexed: 12/12/2022]
Abstract
Tissue is vital to the organization of multicellular organisms, because it creates the different organs and provides the main scaffold for body shape. The quest for effective methods to allow tissue regeneration and create scaffolds for new tissue growth has intensified in recent years. Tissue engineering has recently used some promising alternatives to existing conventional scaffold materials, many of which have been derived from nanotechnology. One important example of these is metal nanoparticles. The purpose of this review is to cover novel tissue engineering methods, paying special attention to those based on the use of metal-based nanoparticles. The unique physiochemical properties of metal nanoparticles, such as antibacterial effects, shape memory phenomenon, low cytotoxicity, stimulation of the proliferation process, good mechanical and tensile strength, acceptable biocompatibility, significant osteogenic potential, and ability to regulate cell growth pathways, suggest that they can perform as novel types of scaffolds for bone tissue engineering. The basic principles of various nanoparticle-based composites and scaffolds are discussed in this review. The merits and demerits of these particles are critically discussed, and their importance in bone tissue engineering is highlighted.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Ehsan Bahojb Noruzi
- Faculty of Chemistry, Department of Inorganic Chemistry, University of Tabriz, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Karim Khanmohammadi Chenab
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Amir Jafari
- Department of Medical Nanotechnology, Faculty of Advanced Technology in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fateme Radinekiyan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Seyed Masoud Hashemi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Farnoush Ahmadpour
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Ali Behboudi
- Faculty of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Jafar Mosafer
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biotechnology, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA.,Department of Dermatology, Harvard Medical School, Boston, Massachusetts, USA.,Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, USA
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19
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Lobao MH, Canham RB, Melvani RT, Parks BG, Murthi AM. Synthetic coracoclavicular ligament vs. coracoclavicular suspensory construct for treatment of acromioclavicular dislocation: a biomechanical study. J Shoulder Elbow Surg 2020; 29:1440-1449. [PMID: 32081633 DOI: 10.1016/j.jse.2019.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/04/2019] [Accepted: 11/16/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND A synthetic ligament (LockDown, Worcestershire, England) has become available to treat complete acromioclavicular dislocation with promising clinical results and potential benefit to avoid postoperative loss of reduction. We investigated the biomechanics of this synthetic ligament in a simulated immediate postoperative rehabilitation setting, hypothesizing that the synthetic ligament would demonstrate less superior coracoclavicular displacement to cyclic loading and higher ultimate load-to-failure values than a coracoclavicular suspensory construct. METHODS Seven matched-pair cadaveric shoulders (mean age at time of death, 79 years) were loaded cyclically and to failure. One specimen in each pair was randomly assigned to the synthetic ligament or coracoclavicular suspensory construct. Superiorly directed 70-N cyclic loading for 3000 cycles at 1.0 Hz was applied through the clavicle in a fixed scapula simulating physiologic states during immediate postoperative rehabilitation, followed by a load-to-failure test at 120 mm/min. RESULTS After 3000 cycles, the superior displacement of the clavicle in the synthetic ligament (9.2 ± 1.1 mm) was 225% greater than in the coracoclavicular suspensory construct (2.8 ± 0.4 mm, 95% confidence interval [CI] 3.4, 8.3; P < .001). Average stiffness of the synthetic ligament (32.8 N/mm) was 60% lower than that of the coracoclavicular suspensory construct (81.9 N/mm, 95% CI 43.3, 54.9; P < .001). Ultimate load-to-failure of the synthetic ligament was 23% (95% CI 37.9, 301.5; P = .016) lower than the coracoclavicular suspensory construct (580.5 ± 85.1 N and 750.2 ± 135.5 N, respectively). CONCLUSION In a simulated immediate postoperative cadaveric model, the synthetic ligament demonstrated poorer biomechanics than the coracoclavicular suspensory construct. These findings suggest that a coracoclavicular suspensory construct may be preferable to a synthetic ligament if early rehabilitation is intended.
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Affiliation(s)
- Mario H Lobao
- Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
| | - R Bruce Canham
- Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
| | - Roshan T Melvani
- Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
| | - Brent G Parks
- Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
| | - Anand M Murthi
- Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA.
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20
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Di Benedetto P, Giardini P, Beltrame A, Mancuso F, Gisonni R, Causero A. Histological analysis of ACL reconstruction failures due to synthetic-ACL (LARS) ruptures. ACTA BIO-MEDICA : ATENEI PARMENSIS 2020; 91:136-145. [PMID: 32555088 PMCID: PMC7944832 DOI: 10.23750/abm.v91i4-s.9702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Anterior Cruciate Ligament (ACL) reconstruction is an established surgical procedure. Synthetic ligaments represent an option for ACL reconstruction. Their popularity declined for the raising concerns due to re-ruptures, knee synovitis and early arthritis related to I and II generation artificial ligaments. The introduction of a III generation synthetic ligament (Ligament Advanced Reinforcement System-LARS) permitted renewed interest in the adoption of this kind of graft. Main purpose of our study was to describe the histological findings on samples obtained from a consecutive series of ACL revision surgeries due to LARS ACL reconstruction failures. Secondary aim was to determine the reason for LARS rupture. METHODS In a period between 2016 and 2018 eleven patients underwent ACL revision surgery due to LARS ACL reconstruction failure. At the time of the arthroscopic procedure, samples of synovial membrane and remnants of the torn LARS were sent to the Pathological-Anatomy Institute of our Hospital for a histological analysis. RESULTS Histological analysis of the synovial tissues confirmed the arthroscopic evidence of synovitis mainly characterized by chronic inflammation with predominance of multinucleated giant cells. The adoption of polarized light microscopy revealed the presence of brightly bi-refractive material (LARS wear particles) in the synovial tissue; at higher magnification wear debris were detected inside the cytoplasma of multi nucleated cells. The histological analysis of the removed LARS revealed a surrounding typical foreign body reaction with poor signs of fibrovascular ingrowth of the synthetic ligament. CONCLUSIONS Our findings could not clearly advocate a unique mechanism of LARS-ACL reconstruction failure: biologic issues (poor tissue ingrowth) and mechanical issues (fibers properties and tunnel position) probably concur in a multi factorial manner. ACL reconstruction using artificial ligaments can not be considered a simple surgery. Artificial augments require some expertise and could therefore achieve better results if used by skilled sport surgeons other than trainees or low volume surgeons. The Authors believe that ACL reconstruction with synthetic devices still have restricted indications for selected patients (e.g. elderly patients who require a fast recovery, professional athlete, autologous tendons not available and/or refusing donor tendons). Our study arises additional suspicion on the unresponsiveness of synthetic fibers and claim some concern in the implantation of synthetic devices.
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Affiliation(s)
| | | | | | - Francesco Mancuso
- Orthopaedics and Traumatology Unit, ASUFC - Tolmezzo General Hospital, Tolmezzo (UD), Italy.
| | | | - Araldo Causero
- Clinic of Orthopaedics, Academic Hospital of Udine, Udine, Italy..
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21
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Ebert JR, Annear PT. ACL Reconstruction Using Autologous Hamstrings Augmented With the Ligament Augmentation and Reconstruction System Provides Good Clinical Scores, High Levels of Satisfaction and Return to Sport, and a Low Retear Rate at 2 Years. Orthop J Sports Med 2019; 7:2325967119879079. [PMID: 31696135 PMCID: PMC6822193 DOI: 10.1177/2325967119879079] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background: There are a number of surgical methods for undertaking anterior cruciate ligament (ACL) reconstruction (ACLR), although relatively high rates of ipsilateral retears and contralateral tears exist, with only 65% of patients returning to their preinjury level of sport. ACLR techniques adopting synthetic augmentation have been proposed in an attempt to improve clinical outcomes and reduce reinjury rates. Purpose: To determine the efficacy of ACLR using autologous hamstrings augmented with the Ligament Augmentation and Reconstruction System (LARS). Study Design: Case series; Level of evidence, 4. Methods: A total of 65 patients were prospectively treated with arthroscopically assisted single-bundle ACLR using hamstrings augmented with the LARS, of whom 50 were available for 1- and 2-year reviews. Patient-reported outcome measures (PROMs), KT-1000 arthrometer testing, knee range of motion, peak isokinetic knee strength testing, and a battery of 4 hop tests were employed. Limb symmetry indices (LSIs) were calculated. Analysis of variance was used to evaluate differences over time and between limbs. Data on return to the preinjury level of sport, retears, and reoperations were collected. Results: High PROM scores were demonstrated at 1 and 2 years. Before the injury, 47 patients (94%) were actively participating in level 1 or 2 sports, with 38 (76%) and 43 (86%) patients having returned at 1 and 2 years, respectively. Normal (<3 mm; 90%) or nearly normal (3-5 mm; 10%) KT-1000 arthrometer side-to-side differences were observed at 2 years. Apart from knee flexion (P < .0001), extension (P = .001), and the 6-m timed hop (P = .039), there were no between-limb differences at 1 year, and there were no differences on any objective measures at 2 years (all P > .05). Mean LSIs across all measures were ≥90%. At 2 years, 84% to 90% of patients were ≥90% on the hop tests, with 72% and 76% of patients having ≥90% for extension and flexion strength, respectively. Two reoperations were undertaken for meniscal tears (7 and 8.5 months), 1 patient (2%) suffered a retear at 7 months, and 2 patients (3%) suffered a contralateral tear (8 and 12 months). Conclusion: This augmented ACLR technique demonstrated good clinical scores, a high rate of return to sport, and low rates of secondary ruptures and contralateral ACL tears at 2 years. Some caution should be noted in interpreting these results, as 15 of 65 patients (23%) were not included in the 2-year follow-up.
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Affiliation(s)
- Jay R Ebert
- School of Human Sciences, University of Western Australia, Crawley, Western Australia, Australia.,HFRC, Nedlands, Western Australia, Australia
| | - Peter T Annear
- Perth Orthopaedic & Sports Medicine Centre, West Perth, Western Australia, Australia
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22
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Gowd AK, Liu JN, Cabarcas BC, Cvetanovich GL, Garcia GH, Manderle BJ, Verma NN. Current Concepts in the Operative Management of Acromioclavicular Dislocations: A Systematic Review and Meta-analysis of Operative Techniques. Am J Sports Med 2019; 47:2745-2758. [PMID: 30272997 DOI: 10.1177/0363546518795147] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Acromioclavicular (AC) instability is a frequent injury affecting young and athletic populations. Symptomatic, high-grade dislocations may be managed by a myriad of operative techniques that utilize different grafts to achieve reduction. Comparative data are lacking on the ability of these techniques to achieve excellent patient outcomes and stable AC reduction and to minimize complications. PURPOSE To systematically review the outcomes and complications of different techniques of AC joint reconstruction. STUDY DESIGN Systematic review and meta-analysis. METHODS The MEDLINE, Scopus, Embase, and Cochrane Library databases were accessed to perform a systematic review of the scientific literature from 2000 to 2018 using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) criteria with the following keywords: "acromioclavicular" and "reconstruction." Included articles were evaluated for loss of reduction, complication rate, revision rate, and change in coracoclavicular distance. Articles were stratified by graft and surgical material used: suture only, Endobutton with suture, TightRope, GraftRope, synthetic artificial ligament, tendon graft, and Weaver-Dunn coracoacromial ligament transfer. These outcomes were pooled using a random-effects model and stratified by surgical technique and arthroscopic versus open reconstruction. RESULTS Fifty-eight articles were included in the analysis, with 63 homogeneous populations composed of 1704 patients. The mean age was 37.1 years (range, 15-80 years) with a mean follow-up of 34.3 months (range, 1.5-186 months). The overall failure rate was 20.8% (95% CI, 16.9%-25.2%). The overall pooled complication rate was 14.2% (95% CI, 10.5%-18.8%). The most common complications were infection (6.3% [95% CI, 4.7%-8.2%]), fracture to the coracoid or distal clavicle (5.7% [95% CI, 4.3%-7.6%]), and hardware/button failure (4.2% [95% CI, 3.1%-5.8%]). There were no differences between arthroscopic and open techniques in regard to loss of reduction (P = .858), overall complication rate (P = .774), and revision rate (P = .390). Open surgery had a greater rate of clavicular/coracoid fractures than arthroscopic surgery (P = .048). Heterogeneity, best assessed from the pooled loss of reduction, was measured as I2 = 64.0%. CONCLUSION Open and arthroscopic AC joint reconstruction techniques have no differences in loss of reduction, the complication rate, and the revision rate based on the available literature. Complications are significant, and profiles vary between surgical techniques, which should be evaluated in the decision making of selecting the technique.
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Affiliation(s)
- Anirudh K Gowd
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Joseph N Liu
- Loma Linda University Medical Center, Loma Linda, California, USA
| | - Brandon C Cabarcas
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | | | | | - Brandon J Manderle
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Nikhil N Verma
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
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Leroux A, Maurice E, Viateau V, Migonney V. Feasibility Study of the Elaboration of a Biodegradable and Bioactive Ligament Made of Poly(ε-caprolactone)-pNaSS Grafted Fibers for the Reconstruction of Anterior Cruciate Ligament: In Vivo Experiment. Ing Rech Biomed 2019. [DOI: 10.1016/j.irbm.2018.10.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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24
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Leroux A, Egles C, Migonney V. Impact of chemical and physical treatments on the mechanical properties of poly(ε-caprolactone) fibers bundles for the anterior cruciate ligament reconstruction. PLoS One 2018; 13:e0205722. [PMID: 30308052 PMCID: PMC6181421 DOI: 10.1371/journal.pone.0205722] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 10/01/2018] [Indexed: 12/16/2022] Open
Abstract
The anterior cruciate ligament rupture is one of the most common sport injuries. Due to ligaments’ poor healing capacity, surgical intervention is often required. Nowadays, these injuries are managed using replacement autografts or to a lesser extent using artificial ligaments. With the expansion of tissue engineering, more recent researches focus on the development of biodegradable structures that could allow graft functioning while enhancing host integration. The main challenge is to develop a structure that gradually loses its mechanical properties when at the same time the neo-ligament gains in solidity. Mechanical behavior and reconstruction of natural tissue are the two key points for such a successful device. This article evaluates the mechanical consistency of poly(ε-caprolactone) fibers bundles grafted with sodium polystyrene sulfonate, as a candidate for ligament prosthesis. In order to be medically used, PCL fibers need to cope with multiple steps before implantation including extensive washings, knitting, grafting and sterilization processes. The evolution of mechanical properties at each step of the elaboration process has been investigated. The results show that PCL bundles have the same visco-elastic behavior than the native ACL. Nevertheless, when undergoing physical treatments such as ionizing radiations, like UV or β-rays, the material endures a hardening, increasing its stiffness but also its fragility. At this opposite, the thermal radical grafting acts like an annealing step, increasing significantly the elasticity of the PCL fibers. With this chemical treatment, the stiffness is decreasing, leading to higher energy dissipation. Added to the observation of the structure of the material, this demonstrates the possibility of the PCL to modulate it microstructure. In case of orthopedic prosthesis, the need of such a construct is strongly required to avoid distension of the future prosthesis and to restore good knee stabilization, showing the promising future of PCL ligament prosthesis.
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Affiliation(s)
- Amélie Leroux
- Laboratory of Biomaterials and Polymers of Specialty, UMR CNRS 7244, Institut Galilée, Université Paris 13, Sorbonne Paris Cité, Villetaneuse, France
| | - Christophe Egles
- Laboratory of Biomechanics and Bioengineering, UMR CNRS 7338, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
| | - Véronique Migonney
- Laboratory of Biomaterials and Polymers of Specialty, UMR CNRS 7244, Institut Galilée, Université Paris 13, Sorbonne Paris Cité, Villetaneuse, France
- * E-mail:
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25
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Parchi PD, Ciapini G, Paglialunga C, Giuntoli M, Picece C, Chiellini F, Lisanti M, Scaglione M. Anterior Cruciate Ligament Reconstruction with LARS Artificial Ligament-Clinical Results after a Long-Term Follow-Up. JOINTS 2018; 6:75-79. [PMID: 30051101 PMCID: PMC6059861 DOI: 10.1055/s-0038-1653950] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 04/08/2018] [Indexed: 02/08/2023]
Abstract
Purpose
The aim of this retrospective study was to evaluate the subjective and functional outcome of anterior cruciate ligament (ACL) reconstruction with the synthetic Ligament Advanced Reinforcement System (LARS) ligament.
Methods
Twenty-six patients were reviewed at an average follow-up of 11.6 years. Objective clinical evaluation was performed with stability tests. Patient-reported outcomes (Visual Analogue Scale, Knee Injury and Osteoarthritis Outcome Score, and Cincinnati Knee Rating Scale) were used to assess subjective and functional outcomes.
Results
Overall satisfactory results were obtained in 22 cases (84.6%). Four patients (15.4%) showed mechanical failure of the graft. No cases of synovitis or infection were reported.
Conclusion
LARS ligament can be considered a safe and suitable option for ACL reconstruction in carefully selected cases, especially elderly patients needing a rapid postoperative recovery.
Level of Evidence
Level IV, retrospective case series.
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Affiliation(s)
- Paolo Domenico Parchi
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Gianluca Ciapini
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Carlo Paglialunga
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Michele Giuntoli
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Carmine Picece
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Fabio Chiellini
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Michele Lisanti
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Michelangelo Scaglione
- 1st Orthopedic Division of Pisa University, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Gliatis J, Anagnostou K, Tsoumpos P, Billis E, Papandreou M, Plessas S. Complex knee injuries treated in acute phase: Long-term results using Ligament Augmentation and Reconstruction System artificial ligament. World J Orthop 2018; 9:24-34. [PMID: 29564211 PMCID: PMC5859197 DOI: 10.5312/wjo.v9.i3.24] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 12/21/2017] [Accepted: 02/05/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To present the long-term results of complex knee injuries, treated early using the Ligament Augmentation and Reconstruction System (LARS) artificial ligament to reconstruct posterior cruciate ligament (PCL).
METHODS From September 1997 to June 2010, thirty-eight complex knee injuries were treated, where early arthroscopic PCL reconstructions were undergone, using the LARS (Surgical Implants and Devices, Arc-sur-Tille, France) artificial ligament. Exclusion criteria were: Late (> 4 wk) reconstruction, open technique, isolated PCL reconstruction, knee degenerative disease, combined fracture or vascular injury and use of allograft or autograft for PCL reconstruction. Clinical and functional outcomes were assessed with IKDC Subjective Knee Form, KOS-ADLS questionnaire, Lysholm scale and SF-12 Health Survey. Posterior displacement (PD) was measured with the Telos Stress Device.
RESULTS Seven patients were excluded; two because of co-existing knee osteoarthritis and the remaining five because of failure to attend the final follow-up. The sample consisted of 31 patients with mean age at the time of reconstruction 33.2 ± 12.5 years (range 17-61). The postoperative follow-up was on average 9.27 ± 4.27 years (range 5-18). The mean average IKDC and KOS scores were 79.32 ± 17.1 and 88.1 ± 12.47% respectively. Average PD was 3.61 ± 2.15 mm compared to 0.91 ± 1.17 mm in the uninjured knees (one with grade 1 + and two with grade 2 +). Dial test was found positive in one patient, whereas the quadriceps active drawer test was positive in three patients. None was tested positive on the reverse-pivot shift test. The range of motion (ROM) was normal in thirty knees, in comparison with the contralateral one. There was no extension deficit. Osteoarthritic changes were found in three knees (9.6%).
CONCLUSION Early treatment of complex knee injuries, using LARS artificial ligament for PCL reconstruction sufficiently reduces posterior tibia displacement and provides satisfactory long-term functional outcomes.
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Affiliation(s)
- John Gliatis
- Department of Orthopaedic, University Hospital of Patras, Patras 25100, Greece
| | | | - Pantelis Tsoumpos
- Department of Orthopaedic, University Hospital of Patras, Patras 25100, Greece
| | - Evdokia Billis
- Department of Physical Therapy, Technological Educational Institute of Western Greece, Aigion 25100, Greece
| | - Maria Papandreou
- Department of Physiotherapy, Technological Educational Institute of Athens, Aigion 25100, Greece
| | - Spyridon Plessas
- Department of Orthopaedic, General Hospital of Nikaia “Snt.Panteleimon”, Piraeus 26504, Greece
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Parry JA, Wagner ER, Kok PL, Dadsetan M, Yaszemski MJ, van Wijnen AJ, Kakar S. A Combination of a Polycaprolactone Fumarate Scaffold with Polyethylene Terephthalate Sutures for Intra-Articular Ligament Regeneration. Tissue Eng Part A 2018; 24:245-253. [DOI: 10.1089/ten.tea.2016.0531] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Joshua A. Parry
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Eric R. Wagner
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Peter L. Kok
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Mahrokh Dadsetan
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Michael J. Yaszemski
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Andre J. van Wijnen
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Sanjeev Kakar
- Tissue Engineering and Biomaterials Laboratory, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
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Li H, Li J, Jiang J, Lv F, Chang J, Chen S, Wu C. An osteogenesis/angiogenesis-stimulation artificial ligament for anterior cruciate ligament reconstruction. Acta Biomater 2017; 54:399-410. [PMID: 28315493 DOI: 10.1016/j.actbio.2017.03.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 03/05/2017] [Accepted: 03/09/2017] [Indexed: 12/13/2022]
Abstract
To solve the poor healing of polyethylene terephthalate (PET) artificial ligament in bone tunnel, copper-containing bioactive glass (Cu-BG) nanocoatings on PET artificial ligaments were successfully prepared by pulsed laser deposition (PLD). It was hypothesized that Cu-BG coated PET (Cu-BG/PET) grafts could enhance the in vitro osteogenic and angiogenic differentiation of rat bone marrow mesenchymal stem cells (rBMSCs) and in vivo graft-bone healing after anterior cruciate ligament (ACL) reconstruction in a goat model. Scanning electron microscope and EDS mapping analysis revealed that the prepared nanocoatings had uniform element distribution (Cu, Ca, Si and P) and nanostructure. The surface hydrophilicity of PET grafts was significantly improved after depositing Cu-BG nanocoatings. The in vitro study displayed that the Cu-BG/PET grafts supported the attachment and proliferation of rBMSCs, and significantly promoted the expression of HIF-1α gene, which up-regulated the osteogenesis-related genes (S100A10, BMP2, OCN) and angiogenesis-related genes (VEGF) in comparison with PET or BG coated PET (BG/PET) grafts which do not contain Cu element. Meanwhile, Cu-BG/PET grafts promoted the bone regeneration at the graft-host bone interface and decreased graft-bone interface width, thus enhancing the bonding strength as well as angiogenesis (as indicated by CD31 expression) in the goat model as compared with BG/PET and pure PET grafts. The study demonstrates that the Cu-containing biomaterials significantly promote osteogenesis and angiogenesis in the repair of bone defects of large animals and thus offering a promising method for ACL reconstruction by using Cu-containing nanobioglass modified PET grafts. STATEMENT OF SIGNIFICANCE It remains a significant challenge to develop an artificial graft with distinct osteogenetic/angiogenetic activity to enhance graft-bone healing for ligament reconstruction. To solve these problems, copper-containing bioactive glass (Cu-BG) nanocoatings on PET artificial ligaments were successfully prepared by pulsed laser deposition (PLD). It was found that the prepared Cu-BG/PET grafts significantly stimulated the proliferation and osteogenic/angiogenic differentiation of bone marrow stromal cells (BMSCs) through activating HIF-1α/S100A10/Ca2+ signal pathway. The most important is that the in vivo bone-forming ability of Cu-containing biomaterials was, for the first time, elucidated in a large animal model, revealing the enhanced capacity of osteogenesis and angiogenesis with incorporation of bioactive Cu element. It is suggested that the copper-containing biomaterials significantly promote osteogenesis and angiogenesis in large animal defects and thus offering a promising method for ACL reconstruction by using Cu-containing nanobioglass modification of PET grafts, paving the way to apply Cu-containing biomaterials for tissue engineering and regenerative medicine.
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Jia Z, Xue C, Wang W, Liu T, Huang X, Xu W. Clinical outcomes of anterior cruciate ligament reconstruction using LARS artificial graft with an at least 7-year follow-up. Medicine (Baltimore) 2017; 96:e6568. [PMID: 28383436 PMCID: PMC5411220 DOI: 10.1097/md.0000000000006568] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The aim of our study was to assess the medium-term clinical outcomes of anterior cruciate ligament (ACL) reconstruction using the Ligament Advanced Reinforcement System (LARS) artificial ligament.A total of 168 patients who underwent arthroscopic ACL reconstruction with the LARS artificial ligament in our department were enrolled in our research. Only 125 met the inclusion/exclusion criteria, and 91 could ultimately be contacted to participate in our research. The mean follow-up was 92 ± 19 months. Physical examinations and a KT-1000 arthrometer were used to evaluate knee laxity. The International Knee Documentation Committee (IKDC) and Lysholm knee scales were evaluated for knee function. The Tegner score was tested for the condition of return to sport. Range of motion (ROM) and the rates of failure and complications were calculated.Among all patients enrolled in the study, the failure rate was 4.4%, and the overall complication rate was 2.2%. Knee laxity measured by the KT-1000 arthrometer was 1.4 ± 1.5 mm, compared with the preoperative value of 5.1 ± 1.3 mm. The Lysholm score improved from a preoperative value of 54.6 ± 14.3 to a postoperative value of 85.4 ± 12.1. The proportion of return to sport was 86.8% (79/91). The postoperative Tegner score was 4.7 ± 1.3, while its value before injury was 5.5 ± 1.0.In this study, ACL reconstruction using the LARS artificial ligament has a good prognosis with a low failure and complication rate at a mean follow-up of 91 months.
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Affiliation(s)
- Zhenyu Jia
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Chenchen Xue
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wei Wang
- Department of Orthopedics, Chengdu Military General Hospital, Chengdu, China
| | - Tianze Liu
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xuan Huang
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Weidong Xu
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China
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30
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A Review on Biomechanical and Treatment Aspects Associated with Anterior Cruciate Ligament. Ing Rech Biomed 2017. [DOI: 10.1016/j.irbm.2016.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Kokubun T, Kanemura N, Murata K, Moriyama H, Morita S, Jinno T, Ihara H, Takayanagi K. Effect of Changing the Joint Kinematics of Knees With a Ruptured Anterior Cruciate Ligament on the Molecular Biological Responses and Spontaneous Healing in a Rat Model. Am J Sports Med 2016; 44:2900-2910. [PMID: 27507845 DOI: 10.1177/0363546516654687] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The poor healing capacity of a completely ruptured anterior cruciate ligament (ACL) has been attributed to an insufficient vascular supply, cellular metabolism, and deficient premature scaffold formation because of the unique intra-articular environment. However, previous studies have focused on intra-articular factors without considering extra-articular factors, including the biomechanical aspects of ACL-deficient knees. HYPOTHESIS Changing the joint kinematics of an ACL-ruptured knee will improve cellular biological responses and lead to spontaneous healing through the mechanotransduction mechanism. STUDY DESIGN Controlled laboratory study. METHODS A total of 66 skeletally mature Wistar rats were randomly assigned to a sham-operated group (SO), ACL-transection group (ACL-T), controlled abnormal movement group (CAM), and an intact group (IN). The ACL was completely transected at the midportion in the ACL-T and CAM groups, and the CAM group underwent extra-articular braking to control for abnormal tibial translation. The SO group underwent skin and joint capsule incisions and tibial drilling, without ACL transection and extra-articular braking. The animals were allowed full cage activity until sacrifice at 1, 2, 4, 6, and 8 weeks postoperatively for histological, molecular biological, and biomechanical assessment. RESULTS All injured ACLs in the ACL-T group were not healed, but those in the CAM group healed spontaneously, showing a typical ligament healing response. Regarding the molecular biological response, there was an upregulation of anabolic factors (ie, transforming growth factor-β) and downregulation of catabolic factors (ie, matrix metalloproteinase). Examination of the mechanical properties at 8 weeks after injury showed that >50% of the strength of the intact ACL had returned. CONCLUSION Our results suggest that changing the joint kinematics of knees with a ruptured ACL alters the molecular biological responses and leads to spontaneous healing. These data support our hypothesis that the mechanotransduction mechanism mediates molecular responses and determines whether the ACL will heal. CLINICAL RELEVANCE Elucidating the relationship between the mechanotransduction mechanism and healing responses in knees with completely ruptured ACLs may result in the development of novel nonsurgical treatment that enables the ACL to spontaneously heal in patients who are not suitable for reconstruction.
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Affiliation(s)
- Takanori Kokubun
- Department of Physical Therapy, Faculty of Health and Social Services, Saitama Prefectural University, Saitama, Japan .,Division of Rehabilitation Medicine, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiko Kanemura
- Department of Physical Therapy, Faculty of Health and Social Services, Saitama Prefectural University, Saitama, Japan
| | - Kenji Murata
- Department of Physical Therapy, Faculty of Health and Social Services, Saitama Prefectural University, Saitama, Japan
| | - Hideki Moriyama
- Department of Rehabilitation Science, Graduate School of Health Science, Kobe University, Hyogo, Japan
| | - Sadao Morita
- Division of Rehabilitation Medicine, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tetsuya Jinno
- Division of Orthopaedics, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidetoshi Ihara
- Department of Orthopaedic Surgery, Kyushu Rosai Hospital, Fukuoka, Japan
| | - Kiyomi Takayanagi
- Department of Physical Therapy, Faculty of Health and Social Services, Saitama Prefectural University, Saitama, Japan
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Antonini S, Meucci S, Parchi P, Pacini S, Montali M, Poggetti A, Lisanti M, Cecchini M. Human mesenchymal stromal cell-enhanced osteogenic differentiation by contact interaction with polyethylene terephthalate nanogratings. Biomed Mater 2016; 11:045003. [PMID: 27388559 DOI: 10.1088/1748-6041/11/4/045003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Among the very large number of polymeric materials that have been proposed in the field of orthopedics, polyethylene terephthalate (PET) is one of the most attractive thanks to its flexibility, thermal resistance, mechanical strength and durability. Several studies have been proposed that interface nano- or micro-structured surfaces with mesenchymal stromal cells (MSCs), demonstrating the potential of this technology for promoting osteogenesis. All these studies were carried out on biomaterials other than PET, which remains almost uninvestigated in terms of cell shaping, alignment and differentiation. Here, we study the effect of PET 350-depth nanogratings (NGs) with a ridge and lateral groove size of 500 nm (T1) or 1 μm (T2), on bone marrow-derived human MSC (hMSC) differentiation in relation to the osteogenic fate. We demonstrate that these substrates, especially T2, can promote the osteogenic phenotype more efficiently than standard flat surfaces and that this effect is more marked if cells are cultured in osteogenic medium than in basal medium. Finally, we show that the shape and disposition of calcium hydroxyapatite granules on the different substrates was influenced by the substrate symmetry, being more elongated and spatially organized on NGs than on flat surfaces.
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Affiliation(s)
- Sara Antonini
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Piazza San Silvestro 12, Pisa 56127, Italy
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Li H, Chen S, Chen J, Chang J, Xu M, Sun Y, Wu C. Mussel-Inspired Artificial Grafts for Functional Ligament Reconstruction. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14708-19. [PMID: 26098135 DOI: 10.1021/acsami.5b05109] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of an artificial graft with distinct osteogenetic activity to enhance osseointegration and to induce the formation of biomimetic tissue structure for ligament reconstruction remains a significant challenge. Inspired by mussels, biomimetic calcium phosphate apatite/polydopamine hybridized-polyethylene terephthalate (APA/PDA-PET) grafts were successfully prepared. The efficacy and mechanism of APA/PDA-PET grafts to induce osseointegration were systematically investigated. The results from the in vitro study indicated that the prepared APA/PDA-PET grafts support the attachment of bone marrow stromal cells (BMSCs) and stimulate the proliferation and osteogenic/angiogenic differentiation of BMSCs via activation of the PKC/p-ERK1/2 signaling pathway. In vivo, histological and radiological results further demonstrate that the APA/PDA-PET grafts significantly improve osseointegration by inducing the formation of new bone tissue and the fibrocartilage transitional zone compared with pure PET grafts. In addition, the pull-out strength of the APA/PDA-PET grafts is significantly higher than that of the pure PET grafts 12 weeks after surgery. These results suggest that this mussel-inspired biomimetic method is an effective strategy for modifying artificial grafts, and the prepared APA/PDA-PET grafts, which possess a beneficial interface, can significantly improve in vivo osseointegration for ligament reconstruction via the synergistic effect of polydopamine and apatite.
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Affiliation(s)
- Hong Li
- †Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, People's Republic of China
| | - Shiyi Chen
- †Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, People's Republic of China
| | - Jiwu Chen
- †Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, People's Republic of China
| | - Jiang Chang
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
| | - Mengchi Xu
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
| | - Yaying Sun
- †Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, People's Republic of China
| | - Chengtie Wu
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China
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Lubowitz JH. Editorial commentary: synthetic ACL grafts are more important than clinical nonbelievers may realize. Arthroscopy 2015; 31:969-70. [PMID: 25953226 DOI: 10.1016/j.arthro.2015.02.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 02/25/2015] [Indexed: 02/02/2023]
Abstract
Artificial ACL grafts are structural ties, designed to resist tension, but not designed to undergo biologic ligamentization by the host. Strategically, an artificial ACL graft may be used as reinforcement to augment ACL repair, ACL autograft, ACL allograft, or tissue-engineered ACL. Most artificial ACL grafts have had poor reported outcomes. However, the Ligament Augmentation and Reconstruction System (LARS) artificial ACL graft shows positive clinical outcomes.
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Barbier O, Guérard S, Boisrenoult P, Thoreux P. Biomechanical evaluation of four femoral fixation configurations in a simulated anterior cruciate ligament replacement using a new generation of Ligament Advanced Reinforcement System (LARS™ AC). EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2015; 25:905-11. [DOI: 10.1007/s00590-015-1598-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 12/29/2014] [Indexed: 01/10/2023]
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Chen J, Gu A, Jiang H, Zhang W, Yu X. A comparison of acute and chronic anterior cruciate ligament reconstruction using LARS artificial ligaments: a randomized prospective study with a 5-year follow-up. Arch Orthop Trauma Surg 2015; 135:95-102. [PMID: 25381471 DOI: 10.1007/s00402-014-2108-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Indexed: 01/20/2023]
Abstract
PURPOSE This prospective randomized study compared acute and chronic anterior cruciate ligament (ACL) reconstruction using ligament advanced reinforcement system (LARS) artificial ligament in young active adults with a 5-year follow-up. METHODS Fifty-five patients were enrolled in this study and divided into two groups based on the elapsed time between the injury and reconstruction: the acute group (3-7 weeks) and the chronic group (6-11 months). The clinical outcomes were evaluated using the Lysholm knee scoring scale, the Tegner activity rating, a KT-1000 Arthrometer, and the International Knee Documentation Committee (IKDC) scoring system. Isokinetic strength of the quadriceps and hamstring was assessed using the Biodex System 3 isokinetic dynamometer. RESULTS Anterior laxity was decreased and quadriceps/hamstring muscle strength was increased in the acute group compared to the chronic group (p > 0.05). There were no statistically significant differences in Lysholm scores, Tegner activity scores, and the IKDC evaluation form between the two groups. CONCLUSIONS These results suggest that earlier ACL reconstruction using a LARS artificial ligament may provide an advantage in the treatment and rehabilitation of ACL rupture.
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Affiliation(s)
- Jia Chen
- Orthopedic Department, The Affiliated Taizhou People's Hospital of Nantong University, Taizhou, 225300, Jiangsu, People's Republic of China,
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Migonney V. Bioactive Polymers and Surfaces: A Solution for Implant Devices. Biomaterials 2014. [DOI: 10.1002/9781119043553.ch5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Viateau V, Decambron A, Manassero M. Animal Models for Orthopedic Applications of Tissue Engineering. Biomaterials 2014. [DOI: 10.1002/9781119043553.ch8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Eng K, Wagels M, Tham SK. Cadaveric scapholunate reconstruction using the ligament augmentation and reconstruction system. J Wrist Surg 2014; 3:192-197. [PMID: 25097813 PMCID: PMC4117697 DOI: 10.1055/s-0034-1384743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background Untreated scapholunate ligament disruption may lead to progressive wrist arthritis. Current techniques used to treat the disruption may not prevent arthritis because of attenuation of a reconstructive ligament substitute or failure to re-establish normal wrist kinematics. Questions/Purposes This study evaluates a combined synthetic-autologous technique for the treatment of scapholunate dissociation. Methods Scapholunate dissociation was created in six cadaveric wrists. The dorsal and volar components of the scapholunate ligament were reconstructed using the Ligament Augmentation & Reconstruction System (LARS; LARS, Arc-sur-Tille, France) and a modified Blatt capsulodesis performed. Reconstructed wrists were subjected to cyclic passive motion. Outcomes were measured radiologically and compared using Student's t-test. Results Carpal alignment was re-established following scapholunate ligament reconstruction. Carpal alignment was maintained after cyclic loading. Conclusions The technique described corrected the carpal malalignment associated with scapholunate dissociation. Corrected positions were maintained after one thousand cycles of flexion and extension without fraying or loosening of the LARS. Clinical Relevance Current popular techniques for scapholunate reconstruction do not address the important dorsal and palmar components of the ligament that control their intercarpal motion. Reconstruction of the dorsal and palmar components of the scapholunate ligament can be achieved through a dorsal approach to the wrist.
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Affiliation(s)
- Kevin Eng
- Department of Orthopaedics, Barwon Orthopaedic Research Unit, The Geelong Hospital, Geelong, Victoria, Australia
| | - Michael Wagels
- Victorian Hand Surgery Associates, Fitzroy, Victoria, Australia
- St. Vincent's Hand Surgery Unit and Hand and Wrist Biomechanics Laboratory, O'Brien Institute, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Stephen K. Tham
- Victorian Hand Surgery Associates, Fitzroy, Victoria, Australia
- St. Vincent's Hand Surgery Unit and Hand and Wrist Biomechanics Laboratory, O'Brien Institute, St. Vincent's Hospital, Fitzroy, Victoria, Australia
- Department of Orthopaedic Surgery, Dandenong Hospital, Dandenong, Australia
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Li H, Chen S. Biomedical coatings on polyethylene terephthalate artificial ligaments. J Biomed Mater Res A 2014; 103:839-45. [PMID: 24825100 DOI: 10.1002/jbm.a.35218] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 04/01/2014] [Accepted: 05/04/2014] [Indexed: 12/19/2022]
Abstract
This review comprehensively covers research conducted to enhance polyethylene terephthalate (PET) artificial ligament osseointegration in the bone tunnel. These strategies, using biocompatible or bioactive coatings, had a positive effect in promoting PET ligament osseointegration by increasing bone formation and decreasing fibrous scar tissue at the ligament-to-bone interface. The improved osseointegration can be translated into a significant increase in the biomechanical pull-out loads. However, the load-to-failure of coated ligament is far lower than that of native ACL. Coatings to promote intra-articular ligamentization are also discussed in this study. Collectively, our investigations may arouse further study of the biological coating of PET artificial ligaments in order to effectively enhance ligament osseointegration and promote artificial ligament ligamentization.
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Affiliation(s)
- Hong Li
- Department of Sports Medicine, Huashan Hospital, Shanghai, China
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Shaerf DA, Pastides PS, Sarraf KM, Willis-Owen CA. Anterior cruciate ligament reconstruction best practice: A review of graft choice. World J Orthop 2014; 5:23-29. [PMID: 24649411 PMCID: PMC3952691 DOI: 10.5312/wjo.v5.i1.23] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/05/2013] [Accepted: 10/20/2013] [Indexed: 02/06/2023] Open
Abstract
There is much literature about differing grafts used in anterior cruciate ligament (ACL) reconstruction. Much of this is of poor quality and of a low evidence base. We review and summarise the literature looking at the four main classes of grafts used in ACL reconstruction; bone-patella tendon-bone, hamstrings, allograft and synthetic grafts. Each graft has the evidence for its use reviewed and then compared, where possible, to the others. We conclude that although there is no clear “best” graft, there are clear differences between the differing graft choices. Surgeon’s need to be aware of the evidence behind these differences, in order to have appropriate discussions with their patients, so as to come to an informed choice of graft type to best suit each individual patient and their requirements.
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Comparison of isometric and anatomical graft placement in synthetic ACL reconstructions: A pilot study. Comput Biol Med 2013; 43:2287-96. [DOI: 10.1016/j.compbiomed.2013.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/29/2013] [Accepted: 10/08/2013] [Indexed: 01/14/2023]
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