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Qiang H, Congming Z, Teng M, Kun Z, Chaofeng W. Plate augmentation and hybrid bone grafting are effective treatments for atrophic nonunion of the femur with the original intramedullary nail retained in situ. Sci Rep 2024; 14:7089. [PMID: 38528078 DOI: 10.1038/s41598-024-57809-1] [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: 11/26/2023] [Accepted: 03/21/2024] [Indexed: 03/27/2024] Open
Abstract
The purpose of this study is to evaluate the efficacy of plate augmentation and hybrid bone grafting for treating atrophic nonunion of the femur with original intramedullary nail retained in situ.In this study, 36 patients with atrophic nonunion of the femur who underwent surgery using the technique of plate augmentation and a hybrid bone grafting while retaining the original intramedullary nail in situ in Xi'an Honghui Hospital from January 2019 to December 2021 were enrolled. 28 patients who met the inclusion and exclusion criteria were ultimately included in the study. These 28 patients, consisting of 20 males and 8 females with a mean age of 38 years, were evaluated based on factors such as operation time, intraoperative blood loss, the average hospitalization days. Additionally, the results and function of these patients were evaluated by union time, Wu's scores of limb function and incidence of serious complications.All 28 patients achieved bone union at the 12 month follow-up, with an average follow-up time of 14.6 ± 4.2 months.The average operation time was 68.3 ± 11.2 min, and the average intraoperative blood loss was 140 ± 22.6 ml. Patients were hospitalized for an average of 5.8 ± 1.1 days. Full clinical and radiological bone union was achieved on average at 5.1 ± 1.9 months. The mean value of Wu's scores at the 12 month follow-up was significantly higher than before the operation. Limb function was excellent in 27 patients and good in one patient at the 12 month follow-up. However, five patients experienced the lower limb vein thrombosis, including one deep vein thrombosis and four lower limb intermuscular vein thromboses. One patient had a superficial infections of the surgical incision site, while three patients reported pain and numbness where their iliac bone graft was extracted at the 12 month follow-up. The technique of plate augmentation and hybrid bone grafting, combined with retaining the original intramedullary nail in situ has been shown to be a safe, effective, simply and standardizable practice for treating atrophic femoral nonunion with an intact original IMN fixation.
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Affiliation(s)
- Huang Qiang
- Department of Orthopaedic Surgery, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, No.76 Nanguo Road, Beilin District, Xi'an, 710054, Shaanxi, China
| | - Zhang Congming
- Department of Orthopaedic Surgery, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, No.76 Nanguo Road, Beilin District, Xi'an, 710054, Shaanxi, China
| | - Ma Teng
- Department of Orthopaedic Surgery, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, No.76 Nanguo Road, Beilin District, Xi'an, 710054, Shaanxi, China
| | - Zhang Kun
- Department of Orthopaedic Surgery, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, No.76 Nanguo Road, Beilin District, Xi'an, 710054, Shaanxi, China
| | - Wang Chaofeng
- Department of Orthopaedic Surgery, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, No.76 Nanguo Road, Beilin District, Xi'an, 710054, Shaanxi, China.
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Heinz NR, Clement ND, Young RN, Duckworth AD, White TO, Molyneux SG. Rate and factors associated with surgical site infection following aseptic revision fixation of orthopaedic trauma injuries. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2023; 33:3511-3517. [PMID: 37202609 PMCID: PMC10651543 DOI: 10.1007/s00590-023-03573-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/05/2023] [Indexed: 05/20/2023]
Abstract
PURPOSE The primary aim of this study was to define the rate of infection following revision of fixation for aseptic failure. The secondary aims were to identify factors associated with an infection following revision and patient morbidity following deep infection. METHODS A retrospective study was undertaken to identify patients who underwent aseptic revision surgery during a 3-year period (2017-2019). Regression analysis was used to identify independent factors associated with SSI. RESULTS Eighty-six patients were identified that met the inclusion criteria, with a mean age of 53 (range 14-95) years and 48 (55.8%) were female. There were 15 (17%) patients with an SSI post revision surgery (n = 15/86). Ten percent (n = 9) of all revisions acquired a 'deep infection', which carried a high morbidity with a total of 23 operations, including initial revision, being undertaken for these patients as salvage procedures and three progressed to an amputation. Alcohol excess (odds ratio (OR) 1.61, 95% CI 1.01-6.36, p = 0.046) and chronic obstructive pulmonary disease (OR 11.1, 95% CI 1.00-133.3, p = 0.050) were independently associated with an increased risk of SSI. CONCLUSION Aseptic revision surgery had a high rate of SSI (17%) and deep infection (10%). All deep infections occurred in the lower limb with the majority of these seen in ankle fractures. Alcohol excess and COPD were independent risk factors associated with an SSI and patients with a history of these should be counselled accordingly. LEVEL OF EVIDENCE Retrospective Case Series, Level IV.
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Affiliation(s)
- N R Heinz
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK.
| | - N D Clement
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
- University of Edinburgh, Edinburgh, UK
| | - R N Young
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - A D Duckworth
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
- University of Edinburgh, Edinburgh, UK
| | - T O White
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - S G Molyneux
- Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
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Hu M, Zeng W, Zhang J, Feng Y, Ma L, Huang F, Cai Q. Fixators dynamization for delayed union and non-union of femur and tibial fractures: a review of techniques, timing and influence factors. J Orthop Surg Res 2023; 18:577. [PMID: 37550732 PMCID: PMC10405409 DOI: 10.1186/s13018-023-04054-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 07/27/2023] [Indexed: 08/09/2023] Open
Abstract
The optimal balance between mechanical environment and biological factors is crucial for successful bone healing, as they synergistically affect bone development. Any imbalance between these factors can lead to impaired bone healing, resulting in delayed union or non-union. To address this bone healing disorder, clinicians have adopted a technique known as "dynamization" which involves modifying the stiffness properties of the fixator. This technique facilitates the establishment of a favorable mechanical and biological environment by changing a rigid fixator to a more flexible one that promotes bone healing. However, the dynamization of fixators is selective for certain types of non-union and can result in complications or failure to heal if applied to inappropriate non-unions. This review aims to summarize the indications for dynamization, as well as introduce a novel dynamic locking plate and various techniques for dynamization of fixators (intramedullary nails, steel plates, external fixators) in femur and tibial fractures. Additionally, Factors associated with the effectiveness of dynamization are explored in response to the variation in dynamization success rates seen in clinical studies.
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Affiliation(s)
- Minhua Hu
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenxing Zeng
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jingtao Zhang
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuanlan Feng
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Luyao Ma
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Feng Huang
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China.
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Qunbin Cai
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China.
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
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Bianco Prevot L, Nannini A, Mangiavini L, Bobba A, Buzzi S, Sinigaglia F, Peretti G. What Is the Best Treatment of the Femoral Shaft Nonunion after Intramedullary Nailing? A Systematic Review. Life (Basel) 2023; 13:1508. [PMID: 37511883 PMCID: PMC10381168 DOI: 10.3390/life13071508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023] Open
Abstract
Nonunion (NU) is one of the most feared complications of femoral shaft fracture treatment. Femoral shaft fracture treatment is often linked with poor bone stock and reduced bone metabolism. In this paper, the goal is to carefully analyze the best treatment options for patients who developed nonunion after the intramedullary nailing of a femoral shaft fracture. A systematic review of the literature available in the PubMed, EMBASE and Cochran library databases was carried out, and 16 studies were included. Exclusion criteria included case reports and case series that do not have data about clinical outcomes or functional outcomes and included fewer than 10 patients. The reviewed data provide evidence for very good results about the treatment of this pathology with exchanging intramedullary nails or the implantation of a plate and screws (general healing rate of 96.3%). Moreover, the data support the utilization of autologous bone graft in order to stimulate the healing process. In conclusion, the choice between these two types of treatment must be guided by the type of pseudarthrosis that the patient presents. Additionally, bone grafting or growth factors promote bone regenerative processes, especially in patients with oligo-atrophic pseudoarthrosis.
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Affiliation(s)
- Luca Bianco Prevot
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Alessandra Nannini
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Laura Mangiavini
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Andrea Bobba
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Sara Buzzi
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Federico Sinigaglia
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
| | - Giuseppe Peretti
- IRCCS Galeazzi-S. Ambrogio Institute, EUORR University Equip of Regenerative and Reconstructive Orthopedics, Via Cristina Belgioioso 173, 20157 Milan, Italy
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Perisano C, Cianni L, Polichetti C, Cannella A, Mosca M, Caravelli S, Maccauro G, Greco T. Plate Augmentation in Aseptic Femoral Shaft Nonunion after Intramedullary Nailing: A Literature Review. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9100560. [PMID: 36290528 PMCID: PMC9598798 DOI: 10.3390/bioengineering9100560] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/05/2022]
Abstract
Background: Femoral shaft fractures (FSFs) are a frequent injury in traumatology for which intramedullary nailing (IMN) is considered the gold standard treatment. Nonunion (NU) is one of the most frequent complications in FSF treated with IMN, with a percentage from 1.1% to 14%. Plate augmentation (PA), the addition of a compression plate and screws, with or without bone graft has been described as an effective option for the treatment of NU, improving the biomechanical conditions at the fracture site. The aim of this review was to analyze the literature relating to the use of PA in NU after IMN in FSFs to assess the efficacy of the technique. Methods: An electronic search on PubMed, Google Scholar, and Web of Science was conducted to search for all studies concerning PA of femoral shaft NUs after IMN. Results: Twenty-four studies were included in the review comprising a total of 502 patients with a mean age of 39.5 years. Of these, 200 hundred patients had atrophic pseudoarthrosis and 123 had hypertrophic pseudoarthrosis, while in 179, the type of pseudoarthrosis was not reported. The most frequently used plate for PA was the dynamic compression plate (DCP); in 87.1% of the cases, the authors added a bone graft to the plate fixation. In 98.0% of the patients, a complete bone union was achieved in a mean time of 5.8 ± 2.12 months. Conclusion: The patients treated with PA included in this review showed a good rate of consolidation in the femoral shaft NUs, with good functional recovery and a low incidence of complications.
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Affiliation(s)
- Carlo Perisano
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Luigi Cianni
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
- Orthopedics and Trauma Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Chiara Polichetti
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
- Orthopedics and Trauma Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Adriano Cannella
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
- Orthopedics and Trauma Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Massimiliano Mosca
- IRCCS Istituto Ortopedico Rizzoli—U.O.C. II Clinic of Orthopaedics and Traumatology, 40136 Bologna, Italy
| | - Silvio Caravelli
- IRCCS Istituto Ortopedico Rizzoli—U.O.C. II Clinic of Orthopaedics and Traumatology, 40136 Bologna, Italy
| | - Giulio Maccauro
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
- Orthopedics and Trauma Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Tommaso Greco
- Department of Ageing, Neurosciences, Head-Neck and Orthopedics Sciences, Orthopedics and Trauma Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
- Orthopedics and Trauma Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Correspondence: ; Tel.: +39-3807582118
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Khalifa AA, Fadle AA, Elsherif ME, Said HG, Elsherif E, Said G, Refai O. Concomitant intramedullary nailing and plate augmentation as a single-stage procedure in treating complicated nonunited femoral shaft fractures. TRAUMA-ENGLAND 2022; 24:286-293. [DOI: 10.1177/14604086211007037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Background and Purpose: Complicated femur fracture represents a major challenge for the orthopedic surgeon, with failed internal fixation, nonunion with broken intramedullary nail (IMN), and infected nonunion among the complications. Mechanical instability, as well as the poor biological environment, is considered as a concern when treating these cases. The purpose of this study was to evaluate concomitant IMN and plate augmentation as a single-stage procedure for the management of multiply operated nonunited femoral shaft fractures. Materials and Methods: Between January 2015 and May 2018, nine patients (eight men) with an average age of 40.8 years (range 25–70) diagnosed as nonunion femoral fractures after an average of four previous surgeries (range 2–6). All patients were available for follow-up with an average of 22 months (range 12–36). Results: The average time for fracture union was 6.7 months (range 3–12); five patients needed bone grafting to compensate for the bone defect encountered during the initial procedure, and two patients required secondary bone grafting after 6 months follow-up. Two patients presented with surgical site infection which was treated by antibiotics and daily dressing. The average leg length discrepancy at last follow-up was 1 cm (range 0.5–1.5). No patient had a metalwork failure or needed removal of the implants. Conclusion: In treating complicated multiply operated nonunited femoral shaft fractures, we believe that this technique can provide a robust mechanical foundation as well as an improved biological environment for such nonunited fractures to heal.
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Affiliation(s)
- Ahmed A Khalifa
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
- Orthopaedic Department, Qena Faculty of Medicine and University Hospital, South Valley University, Qena, Egypt
| | - Amr A Fadle
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
| | | | - Hatem G Said
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
| | - Essam Elsherif
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
| | - Galal Said
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
| | - Omar Refai
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
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Sodhai VM, Pradhan CV, Shyam AK. Exchange K-nailing, Augmented Plating Technique for Atypical Femur Diaphyseal Non-union, and Implant Failure - A Case Report. J Orthop Case Rep 2021; 10:5-9. [PMID: 33954125 PMCID: PMC8051556 DOI: 10.13107/jocr.2020.v10.i03.1724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction: Atypical femoral fractures (AFFs) have an unpredictable healing process leading to higher complication rates. The literature describes various treatment modalities of non-unions in AFF. We aimed to report a case of non-union with AFF and successful union with exchange K-nailing and augmented plating techniques. Case Report: A 75-year-old lady with 5 years of bisphosphonate intake sustained an AFF at the mid-diaphyseal level after a trivial injury which was fixed with closed intramedullary nailing. Nine months after fixation, she developed refracture at the fracture site with segmental breakage of the nail suggesting non-union. This was managed by the removal of fibrous structures at the fracture site, removal of a broken nail, exchange K-nailing, augmented plating, and iliac crest bone grafting. The fracture healed at 15 months from the injury and achieved good functional outcome at a short-term follow-up of 1 year. Conclusion: Our case report highlights the challenges of treating diaphyseal AFF and the combined benefit of exchange nailing and augmented plating with bone grafting in treating AFFs with non-union.
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Affiliation(s)
- Vivek M Sodhai
- Department of Trauma, Sancheti Institute for Orthopaedics and Rehabilitation, Pune, Maharashtra. India
| | - Chetan V Pradhan
- Department of Trauma, Sancheti Institute for Orthopaedics and Rehabilitation, Pune, Maharashtra. India
| | - Ashok K Shyam
- Department of Trauma, Sancheti Institute for Orthopaedics and Rehabilitation, Pune, Maharashtra. India.,Indian Orthopaedic Research Group, Thane, Maharashtra, India
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Zhang W, Zhang Z, Chen H. [Research progress of augmentation plate for femoral shaft nonunion after intramedullary nail fixation]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2019; 33:1467-1473. [PMID: 31823542 DOI: 10.7507/1002-1892.201903073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective To review the history, current situation, and progress of augmentation plate (AP) for femoral shaft nonunion after intramedullary nail fixation. Methods The results of the clinical studies about the AP in treatment of femoral shaft nonunion after intramedullary nail fixation in recent years were widely reviewed and analyzed. Results The AP has been successfully applied to femoral shaft nonunion after intramedullary nail fixation since 1997. According to breakage of the previous nailing, AP is divided into two categories: AP with retaining the previous intramedullary nail and AP with exchanging intramedullary nail. AP is not only suitable for simple nonunion, but also for complex nonunion with severe deformity. Compared with exchanging intramedullary nail, lateral plate, and dual plate, AP has less surgical trauma, shorter healing time, higher healing rate, and faster returning to society. However, there are still some problems with the revision method, including difficulty in bicortical screw fixation, lack of anatomic plate suitable for femoral shaft nonunion, and lack of postoperative function and quality of life assessment. Conclusion Compared with other revision methods, AP could achieve higher fracture healing rate and better clinical prognosis for patients with femoral shaft nonunion. However, whether patients benefit from AP in terms of function and quality of life remain uncertain. Furthermore, high-quality randomized controlled clinical studies are needed to further confirm that AP are superior to the other revision fixations.
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Affiliation(s)
- Wei Zhang
- Department of Orthopedics, General Hospital of Chinese PLA, Beijing, 100853, P.R.China
| | - Zhuo Zhang
- Department of Orthopedics, General Hospital of Chinese PLA, Beijing, 100853, P.R.China
| | - Hua Chen
- Department of Orthopedics, General Hospital of Chinese PLA, Beijing, 100853,
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Inglis S, Schneider KH, Kanczler JM, Redl H, Oreffo ROC. Harnessing Human Decellularized Blood Vessel Matrices and Cellular Construct Implants to Promote Bone Healing in an Ex Vivo Organotypic Bone Defect Model. Adv Healthc Mater 2019; 8:e1800088. [PMID: 29756272 DOI: 10.1002/adhm.201800088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/10/2018] [Indexed: 12/17/2022]
Abstract
Decellularized matrices offer a beneficial substitute for biomimetic scaffolds in tissue engineering. The current study examines the potential of decellularized placental vessel sleeves (PVS) as a periosteal protective sleeve to enhance bone regeneration in embryonic day 18 chick femurs contained within the PVS and cultured organotypically over a 10 day period. The femurs are inserted into decellularized biocompatibility-tested PVS and maintained in an organotypic culture for a period of 10 days. In femurs containing decellularized PVS, a significant increase in bone volume (p < 0.001) is evident, demonstrated by microcomputed tomography (µCT) compared to femurs without PVS. Histological and immunohistological analyses reveal extensive integration of decellularized PVS with the bone periosteum, and enhanced conservation of bone architecture within the PVS. In addition, the expressions of hypoxia inducible factor-1 alpha (HIF-1α), type II collagen (COL-II), and proteoglycans are observed, indicating a possible repair mechanism via a cartilaginous stage of the bone tissue within the sleeve. The use of decellularized matrices like PVS offers a promising therapeutic strategy in surgical tissue replacement, promoting biocompatibility and architecture of the tissue as well as a factor-rich niche environment with negligible immunogenicity.
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Affiliation(s)
- Stefanie Inglis
- Bone and Joint Research GroupCentre for Human Development, Stem Cells and RegenerationInstitute of Developmental SciencesSouthampton General HospitalUniversity of Southampton Southampton SO16 6YD UK
| | - Karl Heinrich Schneider
- Center of Biomedical ResearchMedical University of ViennaLudwig Boltzmann Cluster for Cardiovascular Researchp.A.KIM II/Klinische Abteilung für Kardiologie Währinger Gürtel 18‐20 1090 Vienna Austria
| | - Janos M. Kanczler
- Bone and Joint Research GroupCentre for Human Development, Stem Cells and RegenerationInstitute of Developmental SciencesSouthampton General HospitalUniversity of Southampton Southampton SO16 6YD UK
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/AUVA ResearchCenter and Austrian Cluster for Tissue Regeneration Donaueschingenstrasse 13 1200 Vienna Austria
| | - Richard O. C. Oreffo
- Bone and Joint Research GroupCentre for Human Development, Stem Cells and RegenerationInstitute of Developmental SciencesSouthampton General HospitalUniversity of Southampton Southampton SO16 6YD UK
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