1
|
Johnson TR, Oquendo YA, Seltzer R, Van Rysselberghe NL, Bishop JA, Gardner MJ. Incisional negative pressure wound therapy may not protect against post-operative surgical site complications in bicondylar tibial plateau fractures. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024; 34:1173-1181. [PMID: 37989870 DOI: 10.1007/s00590-023-03782-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/01/2023] [Indexed: 11/23/2023]
Abstract
PURPOSE To determine if incisional negative pressure wound therapy is protective against post-operative surgical site complications following definitive fixation of bicondylar tibial plateau fractures. METHODS A retrospective analysis of patients diagnosed with an acute bicondylar tibial plateau fracture (AO/OTA 41-C) undergoing ORIF from 2010 to 2020 was performed. Patients received either a standard sterile dressing (SD) or incisional negative pressure wound therapy (iNPWT). Primary outcomes included surgical site infection, osteomyelitis, and wound dehiscence. Secondary outcomes included non-union and return to the operating room. Multivariate logistic regression analyses were performed. RESULTS 180 patients were included and 22% received iNPWT (n = 40) and 78% received standard dressings (n = 140). iNPWT was more common in active smokers (24.7% vs. 19.3%, p = 0.002) and the SD group was more likely to be lost to follow up (3.6% vs. 0%, p = 0.025). iNPWT was not protective against infection or surgical site complications, and in fact, was associated with higher odds of post-operative infection (OR: 8.96, p = 0.005) and surgical site complications (OR:4.874, p = 0.009) overall. Alcohol abuse (OR: 19, p = 0.005), tobacco use (OR: 4.67, p = 0.009), and time to definitive surgery (OR = 1.21, p = 0.033) were all independent risk factors for post-operative infection. CONCLUSION In this series of operatively treated bicondylar tibial plateau fractures, iNPWT did not protect against post-operative surgical site complications compared to conventional dressings. Tobacco use, alcohol abuse, and time to definitive surgery, were independent risk factors for post-operative infection. Further studies are needed to determine if iNPWT offers a protective benefit in exclusively high-risk patients with relevant medical and social history.
Collapse
Affiliation(s)
- Taylor R Johnson
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway, Redwood City, CA, 94063, USA.
| | - Yousi A Oquendo
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway, Redwood City, CA, 94063, USA
| | - Ryan Seltzer
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway, Redwood City, CA, 94063, USA
| | | | - Julius A Bishop
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway, Redwood City, CA, 94063, USA
| | - Michael J Gardner
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway, Redwood City, CA, 94063, USA
| |
Collapse
|
2
|
Maisenbacher TC, Ehnert S, Histing T, Nüssler AK, Menger MM. Advantages and Limitations of Diabetic Bone Healing in Mouse Models: A Narrative Review. Biomedicines 2023; 11:3302. [PMID: 38137522 PMCID: PMC10741210 DOI: 10.3390/biomedicines11123302] [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: 10/30/2023] [Revised: 11/29/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
Diabetes represents a major risk factor for impaired fracture healing. Type 2 diabetes mellitus is a growing epidemic worldwide, hence an increase in diabetes-related complications in fracture healing can be expected. However, the underlying mechanisms are not yet completely understood. Different mouse models are used in preclinical trauma research for fracture healing under diabetic conditions. The present review elucidates and evaluates the characteristics of state-of-the-art murine diabetic fracture healing models. Three major categories of murine models were identified: Streptozotocin-induced diabetes models, diet-induced diabetes models, and transgenic diabetes models. They all have specific advantages and limitations and affect bone physiology and fracture healing differently. The studies differed widely in their diabetic and fracture healing models and the chosen models were evaluated and discussed, raising concerns in the comparability of the current literature. Researchers should be aware of the presented advantages and limitations when choosing a murine diabetes model. Given the rapid increase in type II diabetics worldwide, our review found that there are a lack of models that sufficiently mimic the development of type II diabetes in adult patients over the years. We suggest that a model with a high-fat diet that accounts for 60% of the daily calorie intake over a period of at least 12 weeks provides the most accurate representation.
Collapse
Affiliation(s)
- Tanja C. Maisenbacher
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Clinic Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (T.H.); (M.M.M.)
- Siegfried Weller Institute at the BG Trauma Center Tübingen, Department of Trauma and Reconstructive Surgery, University of Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (S.E.); (A.K.N.)
| | - Sabrina Ehnert
- Siegfried Weller Institute at the BG Trauma Center Tübingen, Department of Trauma and Reconstructive Surgery, University of Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (S.E.); (A.K.N.)
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Clinic Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (T.H.); (M.M.M.)
| | - Andreas K. Nüssler
- Siegfried Weller Institute at the BG Trauma Center Tübingen, Department of Trauma and Reconstructive Surgery, University of Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (S.E.); (A.K.N.)
| | - Maximilian M. Menger
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Clinic Tübingen, Schnarrenbergstr. 95, D-72076 Tübingen, Germany; (T.H.); (M.M.M.)
| |
Collapse
|
3
|
Xiao D, Fang L, Liu Z, He Y, Ying J, Qin H, Lu A, Shi M, Li T, Zhang B, Guan J, Wang C, Abu-Amer Y, Shen J. DNA methylation-mediated Rbpjk suppression protects against fracture nonunion caused by systemic inflammation. J Clin Invest 2023; 134:e168558. [PMID: 38051594 PMCID: PMC10849763 DOI: 10.1172/jci168558] [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: 01/04/2023] [Accepted: 11/30/2023] [Indexed: 12/07/2023] Open
Abstract
Challenging skeletal repairs are frequently seen in patients experiencing systemic inflammation. To tackle the complexity and heterogeneity of the skeletal repair process, we performed single-cell RNA sequencing and revealed that progenitor cells were one of the major lineages responsive to elevated inflammation and this response adversely affected progenitor differentiation by upregulation of Rbpjk in fracture nonunion. We then validated the interplay between inflammation (via constitutive activation of Ikk2, Ikk2ca) and Rbpjk specifically in progenitors by using genetic animal models. Focusing on epigenetic regulation, we identified Rbpjk as a direct target of Dnmt3b. Mechanistically, inflammation decreased Dnmt3b expression in progenitor cells, consequently leading to Rbpjk upregulation via hypomethylation within its promoter region. We also showed that Dnmt3b loss-of-function mice phenotypically recapitulated the fracture repair defects observed in Ikk2ca-transgenic mice, whereas Dnmt3b-transgenic mice alleviated fracture repair defects induced by Ikk2ca. Moreover, Rbpjk ablation restored fracture repair in both Ikk2ca mice and Dnmt3b loss-of-function mice. Altogether, this work elucidates a common mechanism involving a NF-κB/Dnmt3b/Rbpjk axis within the context of inflamed bone regeneration. Building on this mechanistic insight, we applied local treatment with epigenetically modified progenitor cells in a previously established mouse model of inflammation-mediated fracture nonunion and showed a functional restoration of bone regeneration under inflammatory conditions through an increase in progenitor differentiation potential.
Collapse
Affiliation(s)
- Ding Xiao
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Liang Fang
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Zhongting Liu
- Department of Mechanical Engineering & Materials Sciences, School of Engineering and
| | - Yonghua He
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Jun Ying
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Haocheng Qin
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Aiwu Lu
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Meng Shi
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Tiandao Li
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Bo Zhang
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Jianjun Guan
- Department of Mechanical Engineering & Materials Sciences, School of Engineering and
| | - Cuicui Wang
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Yousef Abu-Amer
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- Shriners Hospital for Children, St. Louis, Missouri, USA
| | - Jie Shen
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| |
Collapse
|
4
|
Steppe L, Megafu M, Tschaffon-Müller ME, Ignatius A, Haffner-Luntzer M. Fracture healing research: Recent insights. Bone Rep 2023; 19:101686. [PMID: 38163010 PMCID: PMC10757288 DOI: 10.1016/j.bonr.2023.101686] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 01/03/2024] Open
Abstract
Bone has the rare capability of scarless regeneration that enables the complete restoration of the injured bone area. In recent decades, promising new technologies have emerged from basic, translational and clinical research for fracture treatment; however, 5-10 % of all bone fractures still fail to heal successfully or heal in a delayed manner. Several comorbidities and risk factors have been identified which impair bone healing and might lead to delayed bone union or non-union. Therefore, a considerable amount of research has been conducted to elucidate molecular mechanisms of successful and delayed fracture healing to gain further insights into this complex process. One focus of recent research is to investigate the complex interactions of different cell types and the action of progenitor cells during the healing process. Of particular interest is also the identification of patient-specific comorbidities and how these affect fracture healing. In this review, we discuss the recent knowledge about progenitor cells for long bone repair and the influence of comorbidities such as diabetes, postmenopausal osteoporosis, and chronic stress on the healing process. The topic selection for this review was made based on the presented studies at the 2022 annual meeting of the European Calcified Tissue Society (ECTS) in Helsinki.
Collapse
Affiliation(s)
- Lena Steppe
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Germany
| | - Michael Megafu
- A.T. Still University Kirksville College of Osteopathic Medicine, USA
| | | | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Germany
| | | |
Collapse
|
5
|
Mauricio D, Gratacòs M, Franch-Nadal J. Diabetic microvascular disease in non-classical beds: the hidden impact beyond the retina, the kidney, and the peripheral nerves. Cardiovasc Diabetol 2023; 22:314. [PMID: 37968679 PMCID: PMC10652502 DOI: 10.1186/s12933-023-02056-3] [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: 09/24/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023] Open
Abstract
Diabetes microangiopathy, a hallmark complication of diabetes, is characterised by structural and functional abnormalities within the intricate network of microvessels beyond well-known and documented target organs, i.e., the retina, kidney, and peripheral nerves. Indeed, an intact microvascular bed is crucial for preserving each organ's specific functions and achieving physiological balance to meet their respective metabolic demands. Therefore, diabetes-related microvascular dysfunction leads to widespread multiorgan consequences in still-overlooked non-traditional target organs such as the brain, the lung, the bone tissue, the skin, the arterial wall, the heart, or the musculoskeletal system. All these organs are vulnerable to the physiopathological mechanisms that cause microvascular damage in diabetes (i.e., hyperglycaemia-induced oxidative stress, inflammation, and endothelial dysfunction) and collectively contribute to abnormalities in the microvessels' structure and function, compromising blood flow and tissue perfusion. However, the microcirculatory networks differ between organs due to variations in haemodynamic, vascular architecture, and affected cells, resulting in a spectrum of clinical presentations. The aim of this review is to focus on the multifaceted nature of microvascular impairment in diabetes through available evidence of specific consequences in often overlooked organs. A better understanding of diabetes microangiopathy in non-target organs provides a broader perspective on the systemic nature of the disease, underscoring the importance of recognising the comprehensive range of complications beyond the classic target sites.
Collapse
Affiliation(s)
- Dídac Mauricio
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain.
- CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Barcelona, Spain.
- Department of Endocrinology and Nutrition, Hospital de la Santa Creu i Sant Pau, IR Sant Pau, Barcelona, Spain.
- Department of Medicine, University of Vic - Central University of Catalonia, Vic, Spain.
| | - Mònica Gratacòs
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain
| | - Josep Franch-Nadal
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain
- CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Barcelona, Spain
| |
Collapse
|
6
|
Alharbi MA, Graves DT. FOXO 1 deletion in chondrocytes rescues diabetes-impaired fracture healing by restoring angiogenesis and reducing apoptosis. Front Endocrinol (Lausanne) 2023; 14:1136117. [PMID: 37576976 PMCID: PMC10421747 DOI: 10.3389/fendo.2023.1136117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 06/12/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Diabetes mellitus is associated with higher risks of long bone and jaw fractures. It is also associated with a higher incidence of delayed union or non-union. Our previous investigations concluded that a dominant mechanism was the premature loss of cartilage during endochondral bone formation associated with increased osteoclastic activities. We tested the hypothesis that FOXO1 plays a key role in diabetes-impaired angiogenesis and chondrocyte apoptosis. Methods Closed fractures of the femur were induced in mice with lineage-specific FOXO1 deletion in chondrocytes. The control group consisted of mice with the FOXO1 gene present. Mice in the diabetic group were rendered diabetic by multiple streptozotocin injections, while mice in the normoglycemic group received vehicle. Specimens were collected 16 days post fracture. The samples were fixed, decalcified, and embedded in paraffin blocks for immunostaining utilizing anti cleaved caspase-3 or CD31 specific antibodies compared with matched control IgG antibody, and apoptosis by the TUNEL assay. Additionally, ATDC5 chondrocytes were examined in vitro by RT-PCR, luciferase reporter and chromatin immunoprecipitation assays. Results Diabetic mice had ~ 50% fewer blood vessels compared to normoglycemic mice FOXO1 deletion in diabetic mice partially rescued the low number of blood vessels (p < 0.05). Additionally, diabetes increased caspase-3 positive and apoptotic chondrocytes by 50%. FOXO1 deletion in diabetic animals blocked the increase in both to levels comparable to normoglycemic animals (p < 0.05). High glucose (HG) and high advanced glycation end products (AGE) levels stimulated FOXO1 association with the caspase-3 promoter in vitro, and overexpression of FOXO1 increased caspase-3 promoter activity in luciferase reporter assays. Furthermore, we review previous mechanistic studies demonstrating that tumor necrosis factor (TNF) inhibition reverses impaired angiogenesis and reverses high levels of chondrocyte apoptosis that occur in fracture healing. Discussion New results presented here, in combination with recent studies, provide a comprehensive overview of how diabetes, through high glucose levels, AGEs, and increased inflammation, impair the healing process by interfering with angiogenesis and stimulating chondrocyte apoptosis. FOXO1 in diabetic fractures plays a negative role by reducing new blood vessel formation and increasing chondrocyte cell death which is distinct from its role in normal fracture healing.
Collapse
Affiliation(s)
- Mohammed A. Alharbi
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Dana T. Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| |
Collapse
|
7
|
Cavati G, Pirrotta F, Merlotti D, Ceccarelli E, Calabrese M, Gennari L, Mingiano C. Role of Advanced Glycation End-Products and Oxidative Stress in Type-2-Diabetes-Induced Bone Fragility and Implications on Fracture Risk Stratification. Antioxidants (Basel) 2023; 12:antiox12040928. [PMID: 37107303 PMCID: PMC10135862 DOI: 10.3390/antiox12040928] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Type 2 diabetes (T2D) and osteoporosis (OP) are major causes of morbidity and mortality that have arelevant health and economic burden. Recent epidemiological evidence suggests that both of these disorders are often associated with each other and that T2D patients have an increased risk of fracture, making bone an additional target of diabetes. As occurs for other diabetic complications, the increased accumulation of advanced glycation end-products (AGEs) and oxidative stress represent the major mechanisms explaining bone fragility in T2D. Both of these conditions directly and indirectly (through the promotion of microvascular complications) impair the structural ductility of bone and negatively affect bone turnover, leading to impaired bone quality, rather than decreased bone density. This makes diabetes-induced bone fragility remarkably different from other forms of OP and represents a major challenge for fracture risk stratification, since either the measurement of BMD or the use of common diagnostic algorithms for OP have a poor predictive value. We review and discuss the role of AGEs and oxidative stress on the pathophysiology of bone fragility in T2D, providing some indications on how to improve fracture risk prediction in T2D patients.
Collapse
Affiliation(s)
- Guido Cavati
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Filippo Pirrotta
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Daniela Merlotti
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Elena Ceccarelli
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Marco Calabrese
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Luigi Gennari
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| | - Christian Mingiano
- Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
| |
Collapse
|
8
|
Saul D, Menger MM, Ehnert S, Nüssler AK, Histing T, Laschke MW. Bone Healing Gone Wrong: Pathological Fracture Healing and Non-Unions-Overview of Basic and Clinical Aspects and Systematic Review of Risk Factors. BIOENGINEERING (BASEL, SWITZERLAND) 2023; 10:bioengineering10010085. [PMID: 36671657 PMCID: PMC9855128 DOI: 10.3390/bioengineering10010085] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Bone healing is a multifarious process involving mesenchymal stem cells, osteoprogenitor cells, macrophages, osteoblasts and -clasts, and chondrocytes to restore the osseous tissue. Particularly in long bones including the tibia, clavicle, humerus and femur, this process fails in 2-10% of all fractures, with devastating effects for the patient and the healthcare system. Underlying reasons for this failure are manifold, from lack of biomechanical stability to impaired biological host conditions and wound-immanent intricacies. In this review, we describe the cellular components involved in impaired bone healing and how they interfere with the delicately orchestrated processes of bone repair and formation. We subsequently outline and weigh the risk factors for the development of non-unions that have been established in the literature. Therapeutic prospects are illustrated and put into clinical perspective, before the applicability of biomarkers is finally discussed.
Collapse
Affiliation(s)
- Dominik Saul
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
- Kogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN 55905, USA
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
- Correspondence:
| | - Maximilian M. Menger
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
| | - Sabrina Ehnert
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Andreas K. Nüssler
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Matthias W. Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
| |
Collapse
|
9
|
Treatment of Femoral Shaft Pseudarthrosis, Case Series and Medico-Legal Implications. J Clin Med 2022; 11:jcm11247407. [PMID: 36556022 PMCID: PMC9787375 DOI: 10.3390/jcm11247407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/14/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022] Open
Abstract
Pseudarthrosis (PSA) is a possible complication of femoral shaft fracture treatment. It is often associated with reduced bone quality and can, therefore, adversely affect quality of life. Its treatment poses a major challenge for orthopaedic surgeons. Several authors have set forth different surgical approaches for the treatment of pseudarthrosis, such as internal fixation with plate and screws, replacement of an intramedullary nail or prosthetic replacement. In cases associated with bone loss, osteopenia, or comminution of fracture fragments, autologous or homologous bone grafts may also be used. The chronic outcomes of the surgical treatment of femoral shaft pseudarthrosis, even when consolidation is achieved, are linked to disabling sequelae of clinical-functional relevance, deserving an adequate medico-legal evaluation. The purpose of this retrospective study is to analyse a clinical case series of patients treated for atrophic femoral shaft pseudarthrosis at the IRCCS Orthopaedic Institute Galeazzi, Milan, Italy, from 2014 to 2020 and their orthopaedic-traumatological and medico-legal implications.
Collapse
|
10
|
Wang Y, Yu L, Ye Z, Lin R, Sun AR, Liu L, Wei J, Deng F, Zhong X, Cui L, Li L, Liu Y. Association of metformin use with fracture risk in type 2 diabetes: A systematic review and meta-analysis of observational studies. Front Endocrinol (Lausanne) 2022; 13:1038603. [PMID: 36714564 PMCID: PMC9874692 DOI: 10.3389/fendo.2022.1038603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 12/21/2022] [Indexed: 01/12/2023] Open
Abstract
AIMS Increasing evidence suggests that metformin can affect bone metabolism beyond its hypoglycemic effects in diabetic patients. However, the effects of metformin on fracture risk in type 2 diabetes mellitus (T2DM) patients remain unclear. A systematic review and meta-analysis were performed in this study to evaluate the association between metformin application and fracture risk in T2DM patients based on previous studies published until June 2021. METHODS A systematic search was performed to collect publications on metformin application in T2DM patients based on PubMed, Embase, Cochran, and Web of Science databases. Meta-analysis was performed by using a random-effects model to estimate the summary relative risks (RRs) with 95% confidence intervals (CIs). Subgroup analyses based on cohort/case-control and ethnicity and sensitivity analyses were also performed. RESULTS Eleven studies were included in the meta-analysis. Results demonstrated metformin use was not significantly associated with a decreased risk of fracture (RR, 0.91; 95% CI, 0.81-1.02; I2 = 96.8%). Moreover, metformin use also demonstrated similar results in subgroup analyses of seven cohort studies and four case-control studies, respectively (RR, 0.90; 95% CI, 0.76-1.07; I2 = 98.0%; RR, 0.96; 96% CI, 0.89-1.03; I2 = 53.7%). Sensitivity analysis revealed that there was no publication bias. CONCLUSION There was no significant correlation between fracture risk and metformin application in T2DM patients. Due to a limited number of existing studies, further research is needed to make a definite conclusion for clinical consensus.
Collapse
Affiliation(s)
- Yining Wang
- Zhanjiang Key Laboratory of Orthopaedic Technology and Trauma Treatment, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Liming Yu
- Department of Stomatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Zhiqiang Ye
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Rui Lin
- Zhanjiang Key Laboratory of Orthopaedic Technology and Trauma Treatment, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Antonia RuJia Sun
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Queensland, Australia
- Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong, China
| | - Lingna Liu
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
- Marine Medical Research Institute of Zhanjiang, Zhanjiang, China
| | - Jinsong Wei
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Feifu Deng
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Xiangxin Zhong
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Liao Cui
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
- *Correspondence: Yanzhi Liu, ; Li Li, ; Liao Cui,
| | - Li Li
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
- *Correspondence: Yanzhi Liu, ; Li Li, ; Liao Cui,
| | - Yanzhi Liu
- Zhanjiang Key Laboratory of Orthopaedic Technology and Trauma Treatment, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Guangdong Provincial Key Laboratory for Research and Development of Natural Drug, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
- Marine Medical Research Institute of Zhanjiang, Zhanjiang, China
- *Correspondence: Yanzhi Liu, ; Li Li, ; Liao Cui,
| |
Collapse
|