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Rodriguez-Baron EB, Gawad H, Attum B, Obremskey WT. Delayed Unions or Nonunions of the Distal Femur: A Comprehensive Overview. J Bone Joint Surg Am 2024:00004623-990000000-01225. [PMID: 39348464 DOI: 10.2106/jbjs.23.00985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/02/2024]
Abstract
➢ The failure rate of treatment of nonunions of the distal femur with internal fixation and autologous bone grafting remains high at 20% to 30%.➢ Successful treatment of nonunions of the distal femur requires good mechanical stability combined with autologous bone graft. This may require dual-plate fixation or intramedullary nail-plate combinations.➢ Autologous bone graft remains the bone graft of choice. Bone-graft substitutes and biologics require further research.
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Affiliation(s)
- Elsa B Rodriguez-Baron
- Vanderbilt Orthopaedic Institute, Vanderbilt University Medical Center, Nashville, Tennessee
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Direder M, Naß C, Andresen JR, Dannenmann T, Bur F, Hajdu S, Haider T. Distal femoral fractures: periprosthetic fractures have four times more complications than non-periprosthetic fractures and cerclage should be avoided: retrospective analysis of 206 patients. J Orthop Traumatol 2024; 25:41. [PMID: 39225851 PMCID: PMC11371989 DOI: 10.1186/s10195-024-00782-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 07/25/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Distal femoral fractures account for less than 1% of all fractures. The therapy of choice is usually surgical stabilization. Despite advances in implant development over the past few years, complication rate remains comparatively high. The aim of this study is to analyze our results with plate fixation of distal femoral fractures with a focus on complication and fracture healing rates. METHODS In this retrospective cohort study, patients (> 18 years) with distal femoral fractures treated at an urban level I trauma center between 2015 and 2022 were analyzed. RESULTS In total, 206 patients (167 female, 39 male) with an average age of 75 (SD 16) years were diagnosed with a fracture of the distal femur. One hundred fourteen of these patients were treated surgically by means of plate osteosynthesis. In 13 cases (11.41%), a revision procedure had to be performed. The indication for surgical revision was mechanical failure in eight cases (7.02%) and septic complication in five cases (4.39%). Periprosthetic fractures were more likely to cause complications overall (19.6% versus 4.76%) and further included all documented septic complications. The analysis of modifiable surgical factors in the context of plate osteosynthesis showed higher complication rates for cerclage in the fracture area compared with plate-only stabilizations (44.44% versus 22.22%). CONCLUSIONS The data show an increased amount of revisions and a significantly higher number of septic complications in the treatment of periprosthetic fractures of the distal femur compared with non-periprosthetic fractures. The detected combination of plates together with cerclage was associated with higher complication rates. Level of evidence Level III retrospective comparative study.
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Affiliation(s)
- Martin Direder
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria.
| | - Cornelia Naß
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
| | - Julian Ramin Andresen
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
| | - Theresa Dannenmann
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
| | - Florian Bur
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
| | - Stefan Hajdu
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
| | - Thomas Haider
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Lazarettgasse 14, 1090, Vienna, Austria
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Andresen JR, Direder M, Widhalm HK. Multiple fractures after low-energy trauma in an immunosuppressed lung transplant patient with severe osteoporotic bone texture-a challenge for traumatology and osteology. J Surg Case Rep 2024; 2024:rjae597. [PMID: 39329011 PMCID: PMC11427120 DOI: 10.1093/jscr/rjae597] [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: 06/24/2024] [Accepted: 09/05/2024] [Indexed: 09/28/2024] Open
Abstract
Patients before and after lung transplantation often have osteoporosis with existing and recent symptomatic insufficiency fractures, which reduce the quality of life and increase general morbidity and mortality. Due to the reduced bone quality with a significantly increased fracture risk, even low-energy trauma results in the risk of acquiring multiple and complex fractures. The rarefied bone substance can be very challenging for subsequent osteosynthetic treatment. Antiosteoporotic medication is always necessary, and osteoanabolic therapy should be discussed in such cases. In the following, we report about the successful osteosynthetic treatment of an immunosuppressed patient with multiple fractures after a fall from low height. To support fracture healing with antiosteoporotic drug therapy, the patient was switched from antiresorptive to osteoanabolic medication, which resulted in complete fracture consolidation over the course of 6 months. There were also no new insufficiency fractures during this period; however, no improvement in bone density was achieved.
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Affiliation(s)
- Julian Ramin Andresen
- Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Martin Direder
- Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Harald K Widhalm
- Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
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Vasilopoulou A, Karampitianis S, Chloros GD, Giannoudis PV. Incidence of complications and functional outcomes following segmental femoral shaft fractures: a critical review of the literature. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024; 34:2891-2902. [PMID: 39150553 PMCID: PMC11377483 DOI: 10.1007/s00590-024-04065-8] [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: 12/10/2023] [Accepted: 07/31/2024] [Indexed: 08/17/2024]
Abstract
BACKGROUND Although segmental femoral shaft fractures (SFSF) are very challenging to manage, there has been no critical evaluation of the current practices and outcomes. The aim of this study is to evaluate their characteristics, management trends, outcomes, and complications. METHODS A literature search was conducted via the SCOPUS, Embase (via SCOPUS) and MEDLINE (via PubMed) between 1995 and 2023. Studies were included if they reported patient demographics, mechanism of injury, classification of fractures, associated injuries, type of management, outcomes, and complications. EXCLUSION CRITERIA only diaphyseal fractures were included and proximal and distal femoral fractures were excluded from this study. RESULTS Overall, 22 studies met the inclusion criteria reporting on 313 patients. Mean age was 36.2 years with male-female ratio of 4.8 to 1. The majority were high-energy fractures secondary to road traffic accidents and 16% were open. The most commonly associated injuries included chest injury (27%) and lower leg fractures (24%). Treatment consisted of intramedullary nailing (IMN) (72%), plating (22%) or both combined (6%). Outcomes reported: good in 70%, fair in 10%, excellent in 19% and poor in 2% of cases. Mean time to union was 20 weeks. Complications are reported in 24% of cases, with most common delayed union (5%) and non-union (4%). CONCLUSION SFSF are high-energy fractures occurring most commonly in young males, are open in 16% of cases and have significant associated injuries. In their overwhelming majority, IMN is the mainstay of treatment. The expected outcome is generally good in 70% of cases, although not devoid of complications in 24% of cases and patients must be aware of this during the consent process.
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Affiliation(s)
- Anastasia Vasilopoulou
- Orthopaedic Surgery Working Group, Society for Junior Doctors, Athens, Greece
- Trauma and Orthopaedic Department, Korgialenio-Benakio Hellenic Red Cross Hospital, Athens, Greece
| | - Spyridon Karampitianis
- Orthopaedic Surgery Working Group, Society for Junior Doctors, Athens, Greece
- Department of Surgery, Spital Walenstadt, Kantonsspital Graubünden, Spitalstrasse 5, 8880, Walenstadt, St Gallen, Switzerland
| | - George D Chloros
- Orthopaedic Surgery Working Group, Society for Junior Doctors, Athens, Greece
- Orthopaedic Surgery & Traumatology, University General Hospital "ATTIKON", Medical School, National and Kapodistrian University of Athens, 12462, Athens, Greece
- Private Practice, Athens, Greece
| | - Peter V Giannoudis
- Academic Department of Trauma and Orthopaedics, School of Medicine, Clarendon Wing Leeds General Infirmary, University of Leeds, Floor D, Great George Street, Leeds, LS1 3EX, UK.
- NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, UK.
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Stadnyk M, Gibbon S, Buckley R. Are dual, lateral and medial plates, better than a single lateral locking plate for osteoporotic intra-articular distal femur fractures? Injury 2024; 55:111592. [PMID: 38733706 DOI: 10.1016/j.injury.2024.111592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/13/2024]
Affiliation(s)
- Meredith Stadnyk
- University of Calgary, Foothills Hospital, 3134 Hospital Drive NW Calgary, Alberta, Canada T2N 5A1
| | - Stephanie Gibbon
- University of Calgary, Foothills Hospital, 3134 Hospital Drive NW Calgary, Alberta, Canada T2N 5A1
| | - Richard Buckley
- University of Calgary, 0490 McCaig Tower, Foothills Hospital, 3134 Hospital Drive NW Calgary, Alberta, Canada T2N 5A1.
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Kong S, Tse S, Saade A, Bautista B, Haffner M, Saiz AM. Clinical differences between periprosthetic and native distal femur fractures: a comparative observational study. J Orthop Surg Res 2024; 19:303. [PMID: 38769547 PMCID: PMC11103867 DOI: 10.1186/s13018-024-04796-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/14/2024] [Indexed: 05/22/2024] Open
Abstract
INTRODUCTION The incidence of periprosthetic distal femur fractures (PDFF) is increasing as the number of total knee replacements becomes more common. This study compared the demographics, fracture characteristics, treatment, and outcomes of periprosthetic versus native distal femur fractures (NDFF). MATERIALS AND METHODS This was a retrospective cohort study of patients ≥ 18 who underwent surgical fixation of NDFF or PDFF from 2012 to 2020 at a level-1 trauma center. The main variables collected included demographics, AO/OTA fracture classification, fixation construct, concomitant fractures, polytrauma rates, bone density, and reduction quality. Primary outcomes were unexpected return to the operating room (UROR), hospital length of stay, and quality of reduction. T-tests, Fisher's exact tests, and multivariate analyses were used for statistical analysis. RESULTS 209 patients were identified, including 70 PDFF and 139 NDFF. PDFF patients were elderly females (81%) with isolated (80%) and comminuted (85%) 33 A.3 (71%) fractures. NDFF patients included 53% females, were commonly middle-aged, and displayed comminuted (92%) 33 C.2 fractures. 48% of NDFF patients had concomitant fractures. Intramedullary nailing was the primary fixation for both groups, followed by nail-plate combination (37%) for PDFF and lateral locking plates (21%) for NDFF. NDFF patients experienced significantly longer hospital stays, higher UROR rates, and worse quality of reduction (p < 0.05). PDFF patients had a significantly greater prevalence of low bone density (p < 0.05). CONCLUSION PDFF occur as isolated injuries with significant metaphyseal comminution in elderly females with low bone quality. NDFF commonly occurs in younger patients with less metaphyseal comminution and concomitant fractures. Intramedullary nailing was the most common treatment for both groups, although preference for nail-plate combination fixation is increasing. NDFF type 33 C fractures are at greater risk of UROR.
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Affiliation(s)
- Shana Kong
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Shannon Tse
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Aziz Saade
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Barry Bautista
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Max Haffner
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Augustine M Saiz
- Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA.
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Gurung R, Terrill A, White G, Windolf M, Hofmann-Fliri L, Dlaska C, Schuetz M, Epari DR. Severity of Complications after Locking Plate Osteosynthesis in Distal Femur Fractures. J Clin Med 2024; 13:1492. [PMID: 38592416 PMCID: PMC10934512 DOI: 10.3390/jcm13051492] [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: 02/09/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 04/10/2024] Open
Abstract
Background: Locked plating for distal femur fractures is widely recommended and used. We systematically reviewed clinical studies assessing the benefits and harms of fracture fixation with locked plates in AO/OTA Type 32 and 33 femur fractures. Methods: A comprehensive literature search of PubMed, Embase, Cinahl, Web of Science, and the Cochrane Database was performed. The studies included randomized and non-randomized clinical trials, observational studies, and case series involving patients with distal femur fractures. Studies of other fracture patterns, studies conducted on children, pathological fractures, cadaveric studies, animal models, and those with non-clinical study designs were excluded. Results: 53 studies with 1788 patients were found to satisfy the inclusion and exclusion criteria. The most common harms were nonunion (14.8%), malunion (13%), fixation failure (5.3%), infection (3.7%), and symptomatic implant (3.1%). Time to full weight-bearing ranged from 5 to 24 weeks, averaging 12.3 weeks. The average duration of follow-up was 18.18 months, ranging from 0.5 to 108 months. Surgical time ranged between 40 and 540 min, with an average of 141 min. The length of stay in days was 12.7, ranging from 1 to 61. The average plate length was ten holes, ranging from 5 to 20 holes. Conclusion: This review aimed to systematically synthesize the available evidence on the risk associated with locked plating osteosynthesis in distal femur fractures. Nonunion is the most common harm and is the primary cause of reoperation. The overall combined risk of a major and critical complication (i.e., requiring reoperation) is approximately 20%.
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Affiliation(s)
- Roshan Gurung
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
| | - Alexander Terrill
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- School of Clinical Sciences, Faculty of Health, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
| | - Gentry White
- School of Mathematical Sciences, Queensland University of Technology, Brisbane City, QLD 4000, Australia
| | | | | | - Constantin Dlaska
- The Orthopaedic Research Institute of Queensland, Townsville, QLD 4812, Australia
| | - Michael Schuetz
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- Jamieson Trauma Institute, Metro North Hospital and Health Services, Herston, QLD 4006, Australia
| | - Devakara R. Epari
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
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8
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Wang AWT, Stockton DJ, Flury A, Kim TG, Roffey DM, Lefaivre KA. Radiographic Union Assessment in Surgically Treated Distal Femur Fractures: A Systematic Review. JBJS Rev 2024; 12:01874474-202403000-00001. [PMID: 38446912 DOI: 10.2106/jbjs.rvw.23.00223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
BACKGROUND Distal femur fractures are known to have challenging nonunion rates. Despite various available treatment methods aimed to improve union, optimal interventions are yet to be determined. Importantly, there remains no standard agreement on what defines radiographic union. Although various proposed criteria of defining radiographic union exist in the literature, there is no clear consensus on which criteria provide the most precise measurement. The use of inconsistent measures of fracture healing between studies can be problematic and limits their generalizability. Therefore, this systematic review aims to identify how fracture union is defined based on radiographic parameters for surgically treated distal femur fractures in current literature. METHODS In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, Medline, EMBASE, Cochrane Central Register of Controlled Trials, and Web of Science Core Collection databases were searched from inception to October 2022. Studies that addressed surgically treated distal femur fractures with reported radiographic union assessment were included. Outcomes extracted included radiographic definition of union; any testing of validity, reliability, or responsiveness; reported union rate; reported time to fracture union; and any functional outcomes correlated with radiographic union. RESULTS Sixty articles with 3,050 operatively treated distal femur fractures were included. Operative interventions included lateral locked plate (42 studies), intramedullary nail (15 studies), dynamic condylar screw or blade plate (7 studies), dual plate or plate and nail construct (5 studies), distal anterior-posterior/posterior-anterior screws (1 study), and external fixation with a circular frame (1 study). The range of mean follow-up time reported was 4.3 to 44 months. The most common definitions of fracture union included "bridging or callus formation across 3 of 4 cortices" in 26 (43%) studies, "bony bridging of cortices" in 21 (35%) studies, and "complete bridging of cortices" in 9 (15%) studies. Two studies included additional assessment of radiographic union using the Radiographic Union Scale in Tibial fracture (RUST) or modified Radiographic Union Scale in Tibial fracture (mRUST) scores. One study included description of validity, and the other study included reliability testing. The reported mean union rate of distal femur fractures was 89% (range 58%-100%). The mean time to fracture union was documented in 49 studies and found to be 18 weeks (range 12-36 weeks) in 2,441 cases. No studies reported correlations between functional outcomes and radiographic parameters. CONCLUSION The current literature evaluating surgically treated distal femur fractures lacks consistent definition of radiographic fracture union, and the appropriate time point to make this judgement is unclear. To advance surgical optimization, it is necessary that future research uses validated, reliable, and continuous measures of radiographic bone healing and correlation with functional outcomes. LEVEL OF EVIDENCE Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Alice Wei Ting Wang
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - David J Stockton
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Division of Orthopaedic Trauma, Vancouver General Hospital, Vancouver Coastal Health, Vancouver, British Columbia, Canada
| | - Andreas Flury
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Taylor G Kim
- Division of Orthopaedic Trauma, Vancouver General Hospital, Vancouver Coastal Health, Vancouver, British Columbia, Canada
| | - Darren M Roffey
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Division of Orthopaedic Trauma, Vancouver General Hospital, Vancouver Coastal Health, Vancouver, British Columbia, Canada
| | - Kelly A Lefaivre
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Division of Orthopaedic Trauma, Vancouver General Hospital, Vancouver Coastal Health, Vancouver, British Columbia, Canada
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Whittaker BD, Balogh ZJ. Intraoperative diagnosis of rotational instability in femoral shaft fracture non-union revision surgery. ANZ J Surg 2024; 94:485-486. [PMID: 38044503 DOI: 10.1111/ans.18811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/08/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Affiliation(s)
- Brent D Whittaker
- Department of Traumatology, John Hunter Hospital and University of Newcastle, Newcastle, New South Wales, Australia
| | - Zsolt J Balogh
- Department of Traumatology, John Hunter Hospital and University of Newcastle, Newcastle, New South Wales, Australia
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Delgadillo CA, Rojas Lievano J, Olarte CM. Geriatric distal femoral fractures: post-operative complications and nine-year mortality-a retrospective analysis of two tertiary trauma centres. INTERNATIONAL ORTHOPAEDICS 2024; 48:841-848. [PMID: 38175206 PMCID: PMC10901919 DOI: 10.1007/s00264-023-06075-3] [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: 12/05/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024]
Abstract
PURPOSE This study aimed to estimate the mortality at various post-operative intervals and explore influential variables for these outcomes in elderly patients with distal femur fractures (DFF). METHODS A retrospective observational study was conducted across two tertiary care institutions, between 2014 and 2020. The primary outcomes were mortality rates at 30-day, six month, and one year post-surgery. Secondary outcomes included 1-year readmission and reintervention rates along with their correlated complications. RESULTS A total of 37 DFF in 35 patients was analyzed; average age was 83.6 years (range, 65-98 years). The overall mortality rate at a maximum follow-up of 8.8 years was 74% (26/35 patients). The median survival time was 3.2 years and the survival probability at five years was 27% (95% confidence interval [CI], 13 to 43%). Mortality rates at 30 days, six months, and one year after surgery were 8.6% (3 patients), 23% (8 patients), and 34% (12 patients), respectively. Overall mortality rate was 64% (15/24 patients) for native distal femur fractures, and 92% (13/14 patients) for periprosthetic fractures (p = 0.109). Patients older than 85 years and male gender were identified as risk factors for mortality within the first year post-operatively. CONCLUSION Elderly fractures have a high mortality at eight years of follow-up. Mortality at one year was much higher than in other studies of the same nature. We did not find statistically significant differences when comparing native bone fractures with periprosthetic fractures. Factors that impact mortality were being a man, advanced age, elevated index comorbidity, and dementia. There is no relationship between the time to be taken to the surgical procedure and mortality results.
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Affiliation(s)
- Camilo A Delgadillo
- Universidad del Rosario, School of Medicine and Health Science, Bogota, Colombia.
- Department of Orthopedics and Traumatology, Hospital Universitario Fundación Santa Fe de Bogota, Bogota, Colombia.
| | - Jorge Rojas Lievano
- Department of Orthopedics and Traumatology, Hospital Universitario Fundación Santa Fe de Bogota, Bogota, Colombia
- School of Medicine, Universidad de Los Andes, Bogota, Colombia
| | - Carlos M Olarte
- Department of Orthopedics and Traumatology, Hospital Universitario Fundación Santa Fe de Bogota, Bogota, Colombia
- School of Medicine, Universidad de Los Andes, Bogota, Colombia
- Department of Orthopedics and Traumatology, Hospital Infantil Universitario de San Jose, Bogota, Colombia
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11
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Komaki K, Takegami Y, Tokutake K, Hanabayashi M, Kuwahara Y, Yamada Y, Imagama S. Early weight bearing versus late weight bearing after intramedullary nailing for distal femoral fracture (AO/OTA 33) in elderly patients: A multicenter propensity-matched study. J Orthop Sci 2024; 29:268-272. [PMID: 36443141 DOI: 10.1016/j.jos.2022.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 09/29/2022] [Accepted: 10/31/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND This study aimed to assess differences in implant failure and bone union rates, amount of change in alignment of lower extremities, and walking ability between early weight-bearing (EWB) and late weight-bearing (LWB) groups following retrograde intramedullary nailing (RIMN) for distal femoral fracture (AO/OTA 33) (DFF) at multiple centers using propensity score matching. METHODS The data of 213 patients who underwent RIMN from 2012 to 2019 in multiple tertiary hospitals were extracted from our database. Cases with the following factors were excluded: age <60, open fracture, AO/OTA-type 33-C3 fracture, preoperative New Mobility Score (NMS) < 3, postoperative follow-up <3 months, and unknown weight-bearing start time. Eighty-four patients were divided into the EWB and LWB groups. EWB group patients were encouraged to perform partial weight-bearing walking at ≤4 weeks after surgery. LWB group patients were not allowed weight bearing for >4 weeks after surgery. After propensity score matching was applied, 26 cases remained in each group. RESULTS There were no cases of nail failure in either the EWB group or LWB group (P = 1). Screw failure occurred in 0 cases in the EWB group and in 1 case (4.5%) in the LWB group (P = 1.0). Non-union occurred in 5 patients (19.2%) in the EWB group and 4 patients (15.3%) in the LWB group (P = 1). The mean amount of change in lower extremities alignment did not differ between the two groups. The median Knee Society Score was 95.5 (59-100) vs. 93 (72-100) points (P = 0.39). The median NMS was 7 (0-9) vs. 7 (4-9) points (P = 0.82). CONCLUSIONS There were no significant intergroup differences in the rates of implant failure, bone union at one year after surgery, amount of change in lower extremities alignment, or walking ability. We suggest that early weight bearing after RIMN for DFF may not be harmful in elderly people.
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Affiliation(s)
- Kentaro Komaki
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiko Takegami
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Katsuhiro Tokutake
- Department of Hand Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Yutaro Kuwahara
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yotaro Yamada
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shiro Imagama
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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12
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Jitprapaikulsarn S, Chantarapanich N, Gromprasit A, Mahaisavariya C, Sukha K, Rungsakaolert P. Nonvascularized fibular graft with locking screw fixation for metaphyseal bone loss of distal femur: biomechanical assessment validated by a clinical case series. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024; 34:659-671. [PMID: 37684357 DOI: 10.1007/s00590-023-03710-y] [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: 06/20/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
BACKGROUND The optimal modality to surgically treat significant bone loss of distal femur remains inconclusive. The objectives of the present study were to assess the mechanical performance of nonvascularized fibular graft (NVFG) with locking screw fixation in distal femur fixation construct by finite element analysis and to retrospectively describe the outcomes of the present technique in clinical cases. METHODS Four constructs which the fractured femur was stabilized by LCP-DF alone, dual plating, LCP-DF combined with NVFG, and LCP-DF combined with NVFG (LCP-DF-NVFG-S) with locking screw were assessed the biomechanical performance under physiological loads. For the clinical case series, 12 patients with open intercondylar fracture with metaphyseal bone loss of distal femur were operated by LCP-DF-NVFG-S. The collected data included fracture consolidation, length of NVFG, perioperative complications and objective clinical results. RESULTS LCP-DF-NVFG-S demonstrated lower implant equivalent von Mises stress (EQV) stress and better fracture stability than other constructs. A locking screw presented its essence in maintaining the NVFG in the required position and subsequently enhancing the fracture stability. In regard to the clinical series, all fractures were consolidated with an average duration of 27.8 weeks (range 20-32). An average NVFG length was 7.8 cm (range 6-12). No perioperative complication was demonstrated. By the Knee Society score, 1 was considered to be excellent, 9 to be good and 2 to be poor. CONCLUSION Based on the results of mechanical assessment and case series, LCP-DF-NVFG-S can be an effective technique in the management of metaphyseal bone loss of distal femur.
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Affiliation(s)
| | - Nattapon Chantarapanich
- Department of Mechanical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha, Chonburi, Thailand.
| | - Arthit Gromprasit
- Department of Orthopedics, Buddhachinaraj Hospital, Phitsanulok, Thailand
| | - Chantas Mahaisavariya
- Golden Jubilee Medical Center, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kritsada Sukha
- Department of Orthopedics, Buddhachinaraj Hospital, Phitsanulok, Thailand
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Mischler D, Gueorguiev B, Windolf M, Varga P. On the importance of accurate elasto-plastic material properties in simulating plate osteosynthesis failure. Front Bioeng Biotechnol 2023; 11:1268787. [PMID: 38107614 PMCID: PMC10725216 DOI: 10.3389/fbioe.2023.1268787] [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: 07/28/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
Background: Plate osteosynthesis is a widely used technique for bone fracture fixation; however, complications such as plate bending remain a significant clinical concern. A better understanding of the failure mechanisms behind plate osteosynthesis is crucial for improving treatment outcomes. This study aimed to develop finite element (FE) models to predict plate bending failure and validate these against in vitro experiments using literature-based and experimentally determined implant material properties. Methods: Plate fixations of seven cadaveric tibia shaft fractures were tested to failure in a biomechanical setup with various implant configurations. FE models of the bone-implant constructs were developed from computed tomography (CT) scans. Elasto-plastic implant material properties were assigned using either literature data or the experimentally derived data. The predictive capability of these two FE modelling approaches was assessed based on the experimental ground truth. Results: The FE simulations provided quantitatively correct prediction of the in vitro cadaveric experiments in terms of construct stiffness [concordance correlation coefficient (CCC) = 0.97, standard error of estimate (SEE) = 23.66, relative standard error (RSE) = 10.3%], yield load (CCC = 0.97, SEE = 41.21N, RSE = 7.7%), and maximum force (CCC = 0.96, SEE = 35.04, RSE = 9.3%), when including the experimentally determined material properties. Literature-based properties led to inferior accuracies for both stiffness (CCC = 0.92, SEE = 27.62, RSE = 19.6%), yield load (CCC = 0.83, SEE = 46.53N, RSE = 21.4%), and maximum force (CCC = 0.86, SEE = 57.71, RSE = 14.4%). Conclusion: The validated FE model allows for accurate prediction of plate osteosynthesis construct behaviour beyond the elastic regime but only when using experimentally determined implant material properties. Literature-based material properties led to inferior predictability. These validated models have the potential to be utilized for assessing the loads leading to plastic deformation in vivo, as well as aiding in preoperative planning and postoperative rehabilitation protocols.
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Affiliation(s)
- Dominic Mischler
- AO Research Institute Davos, Davos, Switzerland
- Graduate School for Cellular and Biomedical Sciences (GCB), University of Bern, Bern, Switzerland
| | | | | | - Peter Varga
- AO Research Institute Davos, Davos, Switzerland
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Espey R, Stevenson L, Tucker A. Combined nail-plate constructs in the management of osteoporotic native distal femoral fractures: a systematic review of the available evidence. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2023; 33:3215-3223. [PMID: 37106139 DOI: 10.1007/s00590-023-03552-8] [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: 02/21/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023]
Abstract
PURPOSE Distal femoral fractures account for 4-6% of fragility fractures. These may be managed using a combined nail-plate construct (NPC). The use of NPCs is gaining traction. Whilst several theoretical advantages exist, there is little evidence reporting on binary or patient-reported outcomes. The aim of the current study was to perform a systematic review of the available literature pertaining to NPCs and their treatment of native distal femoral fractures, appraising the outcomes and focusing on the rationale for their increasing uptake in recent literature. METHODS A comprehensive search of MEDLINE, EMBASE, Clinical Key, PubMed and Cochrane library was performed from date of inception up to in August 9, 2022. All study languages were included initially. A further Google Scholar search review was performed to identify any other studies not identified in the database interrogation. Studies were eligible if they reported on the use of nail-plate constructs in managing distal femoral fractures. Any outcome metric was permitted. The study was conducted in accordance with PRISMA guidelines. Risk of bias was assessed using the Methodological Index for non-randomised Studies tool. Quantitative analysis was performed using a log odds ratio random effects model. The Knapp-Hartung adjustment was utilised if the total number of included studies was < 5. Study effect sizes and appropriate plots were constructed to illustrate the outcomes data. RESULTS A total of four studies were eligible for inclusion. Study data was extracted and summarised with their relevant outcomes presented. The literature review demonstrated that the use of NPCs led to significantly earlier full weight bearing (p < 0.001) and had reduced non-union rates over a single construct, without affecting infection rates (12.5% vs. 5.6%; p = 0.289) and significantly lower implant failure rates (10.5% vs. 0%; p = 0.011). A meta-analysis is performed of available studies and Forrest plots presented. CONCLUSION The use of NPC in the management of native osteoporotic DFFs is gaining traction but the available evidence is of low grade with significant heterogeneity in small cohorts of patients. We suggest that a large-scale, multicentre prospective study should be performed, with agreed functional and radiological outcome metrics, to provide a more robust evidence base.
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Affiliation(s)
- Robert Espey
- Musgrave Park Hospital, Stockmans Lane, Belfast, BT9 7JB, UK
| | - Lewis Stevenson
- Ulster Hospital Dundonald, Upper Newtownards Road, Belfast, BT16 1RH, UK
| | - Adam Tucker
- Royal Victoria Hospital, Grosvenor Road, Belfast, BT12 6BA, UK.
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Mimata H, Matsuura Y, Yano S, Ohtori S, Todo M. Mechanical evaluation of revision surgery for femoral shaft nonunion initially treated with intramedullary nailing: Exchange nailing versus augmentation plating. Injury 2023; 54:111163. [PMID: 37939634 DOI: 10.1016/j.injury.2023.111163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/11/2023] [Accepted: 10/23/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION Exchange nailing (EN) or augmentation plating (AP) has been employed to treat nonunions after intramedullary nailing for femoral shaft fractures. Although instability is a factor in hypertrophic nonunion, mechanical evaluations have been limited because the contribution of the callus to fracture site stability varies with healing. Our previous study illustrated the potential for evaluation using a finite element analysis (FEA) that incorporates callus material properties. This study aimed to mechanically evaluate revision surgery for nonunions using FEA. MATERIALS AND METHODS A quantitative computed tomography-based FEA was performed on virtual revision models of a patient with suspected nonunion after intramedullary nailing. In addition to the initial nailing model (IN) with an 11-mm diameter (D) and 360-mm length (L), four EN models with D12mm (EN1), D13mm (EN2), D12mm-L400mm (EN3), and D13mm-L400mm (EN4) nails and three AP models with 5- (AP1), 6- (AP2), and 7-hole (AP3) plates were created. As with bone, callus was assigned inhomogeneous material properties derived from density based on an empirical formula. The hip joint reaction force and muscle forces at maximum load during the gait cycle were applied. The volume ratio of the callus at the fracture site with a tensile failure risk of ≥1 (tensile failure ratio) and bone fragment movement were evaluated. RESULTS The tensile failure ratio was 11.6 % (IN), 10.1 % (EN1), 6.3 % (EN2), 10.9 % (EN3), 6.2 % (EN4), 6.4 % (AP1), 7.2 % (AP2), and 7.7 % (AP3), respectively. The bone fragment movement showed an opening on the lateral side with the initial intramedullary nailing. However, both revision surgeries reduced the opening, leading to compression except in the EN1 model. The proximal bone fragments were internally rotated relative to the distal fragments, and the rotational instability was more suppressed in models with lower tensile failure ratio. CONCLUSIONS For EN, the increase in diameter, not length, is important to suppress instability. AP reduces instability, comparable to a 2 mm increase in nail diameter, and screw fixation closer to the fracture site reduces instability. This study suggest that AP is mechanically equivalent to EN and could be an option for revision surgery for femoral shaft nonunions.
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Affiliation(s)
- Hideyuki Mimata
- Research Center of Computational Mechanics, Inc., 1-7-1 Togoshi, Shinagawa-ku, Tokyo 141-0041, Japan.
| | - Yusuke Matsuura
- Department of Orthopeadic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Sei Yano
- Department of Orthopeadic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Seiji Ohtori
- Department of Orthopeadic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Mitsugu Todo
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-Koen Kasuga-shi, Fukuoka 816-8580, Japan
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Liu J, Huang Z, Qi Y, Long Y, Zhang Y, Liu N, Zuo G, Wang W. Biomechanical analysis of bridge combined fixation system as a novel treatment for the fixation of type A3 distal femoral fractures. Front Surg 2023; 10:1264904. [PMID: 38033528 PMCID: PMC10687203 DOI: 10.3389/fsurg.2023.1264904] [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: 07/21/2023] [Accepted: 10/25/2023] [Indexed: 12/02/2023] Open
Abstract
Background To compare the biomechanical parameters of AO/OTA type A3 distal femoral fractures fixed bilaterally with a bridge combined fixation system (BCFS) and lateral locking compression plate + locking reconstruction plate (LCP + LRP). Methods Twelve A3 distal femoral fracture models with medial cortical defects of the distal femur were created using synthetic femoral Sawbones. BCFS and LCP + LRP were used for bilateral fixation, with six in each group. Axial compression and torsion tests were performed on the two groups of fracture models to determine their stiffness during axial compression and the Torsional stiffness during torsion tests. Axial compression failure tests were performed to collect the vertical loads of the ultimate failure tests. Results In the test conducted on the fixed type A3 distal femoral fracture models, the axial stiffness in the BCFS group (group A) (1,072.61 ± 113.5 N/mm) was not significantly different from that in the LCP + LRP group (group B) (1,184.13 ± 110.24 N/mm) (t = 1.726, P = 0.115), the Torsional stiffness in group A (3.73 ± 0.12 N.m/deg) was higher than that in group B (3.37 ± 0.04 N.m/deg) (t = 6.825, P < 0.001),and the ultimate failure test of type A3 fracture model showed that the vertical load to destroy group A fixation (5,290.45 ± 109.63 N) was higher than that for group B (3,978.43 ± 17.1 N) (t = 23.28, P < 0.05). Notably, intertrochanteric fractures occurred in groups A and B. Conclusions In the fixation of type A3 distal femoral fractures, the anti-axial compression of the BCFS group was similar to that of the LCP + LRP group, but the anti-torsion was better.
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Affiliation(s)
- Jianke Liu
- Shandong First Medical University & Shandong Academy Medical Sciences, Jinan, China
| | - Zhaozhao Huang
- Tianjin Walkman Biomaterial Co., Ltd. Newton Laboratory, Tianjin, China
| | - Yubin Qi
- Department of Orthopaedics, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yuntao Long
- Shandong First Medical University & Shandong Academy Medical Sciences, Jinan, China
| | - Yanhui Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Na Liu
- Tianjin Walkman Biomaterial Co., Ltd. Newton Laboratory, Tianjin, China
| | - Guilai Zuo
- Department of Orthopaedics, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Wen Wang
- Department of Orthopaedics, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
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Lotzien S, Baron D, Rosteius T, Cibura C, Ull C, Schildhauer TA, Geßmann J. Medial augmentation plating of aseptic distal femoral nonunions. BMC Musculoskelet Disord 2023; 24:554. [PMID: 37407946 DOI: 10.1186/s12891-023-06675-5] [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: 10/28/2022] [Accepted: 06/27/2023] [Indexed: 07/07/2023] Open
Abstract
BACKGROUND Distal femur nonunions are well-recognized contributors to persistent functional disability, with limited data regarding their treatment options. In the current study, we asked whether additional medial augmentation plating is a feasible treatment option for patients with aseptic distal femoral nonunion and intact lateral implants. METHODS We conducted a single-center, retrospective study including 20 patients treated for aseptic distal femoral nonunion between 2002 and 2017. The treatment procedure included a medial approach to the distal femur, debridement of the nonunion site, bone grafting and medial augmentation plating utilizing a large-fragment titanium plate. Outcome measures were bone-related and functional results, measured by the Hospital for Special Surgery Knee Rating Scale (HSS) and the German Short Musculoskeletal Function Assessment questionnaire (SMFA-D). RESULTS Eighteen of 20 nonunions showed osseous healing at 8.16 ± 5.23 (range: 3-21) months after augmentation plating. Regarding functional results, the mean HSS score was 74.17 ± 11.12 (range: 57-87). The mean SMFA-D functional index was 47.38 ± 16.78 (range 25.74-71.32) at the last follow-up. Index procedure-associated complications included two cases of persistent nonunion and one case of infection. CONCLUSIONS According to the assessed outcome measures, augmentation plating is a feasible treatment option, with a high proportion of patients achieving bony union and good functional outcomes and a few patients experiencing complications.
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Affiliation(s)
- Sebastian Lotzien
- Department of General and Trauma Surgery, Ruhr University Bochum, Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany.
| | - Darius Baron
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
| | - Thomas Rosteius
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
| | - Charlotte Cibura
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
| | - Christopher Ull
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
| | - Thomas Armin Schildhauer
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
| | - Jan Geßmann
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bürkle- de- La- Camp Platz 1, 44789, Bochum, Germany
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Redondo-Trasobares B, Sarasa-Roca M, Rosell-Pradas J, Calvo-Tapies J, Gracia-Villa L, Albareda-Albareda J. [Translated article] Comparative clinical and biomechanical study of different types of osteosynthesis in the treatment of distal femur fractures. Rev Esp Cir Ortop Traumatol (Engl Ed) 2023; 67:T216-T225. [PMID: 36863523 DOI: 10.1016/j.recot.2023.02.025] [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: 12/04/2022] [Accepted: 01/10/2023] [Indexed: 03/04/2023] Open
Abstract
INTRODUCTION AND OBJECTIVES Distal femoral fractures represent a problem due to their high number of complications. The aim was to compare the results, complications and stability achieved with retrograde intramedullary nailing and the angular stable plate in the treatment of distal femoral diaphyseal fractures. MATERIAL AND METHOD A clinical and experimental biomechanical study was carried out using finite elements. The results of the simulations allowed us to obtain the main results related to the stability of osteosynthesis. For clinical follow-up data, frequencies were used for qualitative variables, and Fisher's exact test and χ2 test were used to evaluate the significance of the different factors, with the condition of P<.05. RESULTS In the biomechanical study, the retrograde intramedullar nails demonstrated superiority, obtaining lower values in terms of global displacement, maximum tension, torsion resistance, and bending resistance. In the clinical study, the rate of consolidation of the plates was lower than nails (77% vs. 96%, P=.02). The factor that most influenced the healing of fractures treated with plate were the central cortical thickness (P=.019). The factor that most influenced the healing of nail-treated fractures was the difference between the diameter of the medullary canal and the nail. CONCLUSIONS Our biomechanical study shows that both osteosynthesis provide sufficient stability, but biomechanically behaves differently. Nails provide greater overall stability being preferable the use of long nails adjusted to the diameter of the canal. Plates form less rigid osteosynthesis, with little resistance to bending.
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Affiliation(s)
- B Redondo-Trasobares
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain.
| | - M Sarasa-Roca
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - J Rosell-Pradas
- Departamento de Ingeniería Mecánica, Universidad de Zaragoza, Zaragoza, Spain
| | - J Calvo-Tapies
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - L Gracia-Villa
- Departamento de Ingeniería Mecánica, Universidad de Zaragoza, Zaragoza, Spain
| | - J Albareda-Albareda
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
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19
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Redondo-Trasobares B, Sarasa-Roca M, Rosell-Pradas J, Calvo-Tapies J, Gracia-Villa L, Albareda-Albareda J. Comparative clinical and biomechanical study of different types of osteosynthesis in the treatment of distal femur fractures. Rev Esp Cir Ortop Traumatol (Engl Ed) 2023; 67:216-225. [PMID: 36649756 DOI: 10.1016/j.recot.2023.01.003] [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: 12/04/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
INTRODUCTION AND OBJECTIVES Distal femoral fractures represent a problem due to their high number of complications. The aim was to compare the results, complications and stability achieved with retrograde intramedullary nailing and the angular stable plate in the treatment of distal femoral diaphyseal fractures. MATERIAL AND METHOD A clinical and experimental biomechanical study was carried out using finite elements. The results of the simulations allowed us to obtain the main results related to the stability of osteosynthesis. For clinical follow-up data, frequencies were used for qualitative variables, and Fisher's exact test and χ2 test were used to evaluate the significance of the different factors, with the condition of P<.05. RESULTS In the biomechanical study, the retrograde intramedullar nails demonstrated superiority, obtaining lower values in terms of global displacement, maximum tension, torsion resistance, and bending resistance. In the clinical study, the rate of consolidation of the plates was lower than nails (77% vs. 96%, P=.02). The factor that most influenced the healing of fractures treated with plate were the central cortical thickness (P=.019). The factor that most influenced the healing of nail-treated fractures was the difference between the diameter of the medullary canal and the nail. CONCLUSIONS Our biomechanical study shows that both osteosynthesis provide sufficient stability, but biomechanically behaves differently. Nails provide greater overall stability being preferable the use of long nails adjusted to the diameter of the canal. Plates form less rigid osteosynthesis, with little resistance to bending.
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Affiliation(s)
- B Redondo-Trasobares
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España.
| | - M Sarasa-Roca
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España
| | - J Rosell-Pradas
- Departamento de Ingeniería Mecánica, Universidad de Zaragoza, Zaragoza, España
| | - J Calvo-Tapies
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España
| | - L Gracia-Villa
- Departamento de Ingeniería Mecánica, Universidad de Zaragoza, Zaragoza, España
| | - J Albareda-Albareda
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España
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Cone R, Roszman A, Conway Y, Cichos K, McGwin G, Spitler CA. Risk Factors for Nonunion of Distal Femur Fractures. J Orthop Trauma 2023; 37:175-180. [PMID: 36729004 DOI: 10.1097/bot.0000000000002553] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/13/2022] [Indexed: 02/03/2023]
Abstract
OBJECTIVES To determine patient, fracture, and construct related risk factors associated with nonunion of distal femur fractures. DESIGN Retrospective cohort study. SETTING Academic Level I trauma center. PARTICIPANTS Patients 18 years and older presenting with OTA/AO 33A and 33C distal femur fractures from 2004 to 2020. A minimum follow-up of 6 months was required for inclusion. OTA/AO 33B and periprosthetic fractures were excluded, 438 patients met inclusion criteria for the study. MAIN OUTCOMES The primary outcome of the study was fracture nonunion defined as a return to the OR for management of inadequate bony healing. Patient demographics, comorbidities, injury characteristics, fixation type, and construct variables were assessed for association with distal femur fracture nonunion. Secondary outcomes include conversion to total knee arthroplasty, surgical site infection, and other reoperation. RESULTS The overall nonunion rate was 13.8% (61/438). The nonunion group was compared directly with the fracture union group for statistical analysis. There were no differences in age, sex, mechanism of injury, Injury Severity Score, and time to surgery between the groups. Lateral locked plating characteristics including length of plate, plate metallurgy, screw density, and working length were not significantly different between groups. Increased body mass index [odds ratio (OR), 1.05], chronic anemia (OR, 5.4), open fracture (OR, 3.74), and segmental bone loss (OR, 2.99) were independently associated with nonunion. Conversion to total knee arthroplasty (TKA) ( P = 0.005) and surgical site infection ( P < 0001) were significantly more common in the nonunion group. CONCLUSION Segmental bone loss, open fractures, chronic anemia, and increasing body mass index are significant risk factors in the occurrence of distal femoral nonunion. Lateral locked plating characteristics did not seem to affect nonunion rates. Further investigation into the prevention of nonunion should focus on fracture fixation constructs and infection prevention. LEVEL OF EVIDENCE Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Ryan Cone
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL
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Kursad Bayraktar M, Akdaş Tekin E. Headless cannulated screw and external fixator in the treatment of type C distal femur fractures: Effect of early mobilization on clinical outcomes. Acta Orthop Belg 2023; 89:122-127. [PMID: 37294995 DOI: 10.52628/89.1.11119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Distal femur fractures occur due to high-energy trauma in young patients and with low-energy traumas in osteoporotic elderly patients. Implants selected for use in the treatment of distal femur fracture should provide stable fixation and allow early mobilization especially at elder patients. We aimed to investigate the effects of the headless cannulated screw and external fixator combination on the early mobilization of the patients and postoperative complications. Twenty-one patients with Type C distal femur fracture were included in the study.The fracture lines were temporarily fixed with K wires. After the fracture reduction with headless cannulated screws a tubular external fixator with carbon fiber rods was applied to bridge the knee joint. The external fixators were removed at the 6th week follow-up, and the patients were forced to perform knee flexion as much as they could tolerate. The 6th month KSS scores of the patients were 44.3 (34-60) and the 18th month KSS scores were 77.5 (60-88).Preoperative VAS score was 8(7-10) and postoperative VAS score was 4(3-6).Knee flexion of the patients at 6th months was 95.9 (80-110 degrees) and at 6th months knee flexion was 114.5 (100-125 degrees). Superficial pin site infection was observed at 4 patients and regressed with antibiotic therapy. Combination of cannulated screws with an external fixator for joint restoration in type C distal femur fractures allows early mobilization and reduces postoperative morbidity.
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Outcome Evaluation of Distal Femoral Fractures Following Surgical Management: A Retrospective Cohort Study. J Pers Med 2023; 13:jpm13020350. [PMID: 36836584 PMCID: PMC9960625 DOI: 10.3390/jpm13020350] [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: 01/23/2023] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Distal femur fractures are challenging in surgical management as the outcome is crucial for restoring the biomechanical stability and longitudinal axis of the leg and function of the knee joint. METHODS A retrospective review of all distal femoral fractures treated in a level I trauma center over a decade was performed. The radiographs were reviewed for fracture entity, osseous healing, implant failure, mechanical axis, and degenerative joint changes. Clinical outcome was reviewed regarding postoperative complications and postoperative range of motion of the knee joint. RESULTS 130 patients who were managed with screw fixation (n = 35), plating systems (n = 92) or intramedullary nailing systems (n = 3) remained for evaluation. Mean follow up was 26 months. Clinical outcome was significantly better for flexion degrees following screw fixation (p = 0.009). Delayed fracture union (p = 0.002) or non-union (p = 0.006) rates were significantly higher in plate osteosynthesis. Mild pathologic deformity for varus and valgus collapse was found following plate osteosynthesis. CONCLUSIONS Screw fixation shows fewer postoperative complications than plate fixation and is favored for extra and partial intraarticular distal femur fractures. Plating constructs remain the superior fixation method in complex distal femur fractures but are associated with higher rates of non-union and leg axis deviation.
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Wysocki MA, Doyle ST. Advancing Osteoporosis Evaluation Procedures: Detailed Computational Analysis of Regional Structural Vulnerabilities in Osteoporotic Bone. J Pers Med 2023; 13:jpm13020321. [PMID: 36836558 PMCID: PMC9962183 DOI: 10.3390/jpm13020321] [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: 01/07/2023] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Osteoporotic fractures of the femur are associated with poor healing, disability, reduced quality of life, and high mortality rates within 1 year. Moreover, osteoporotic fractures of the femur are still considered to be an unsolved problem in orthopedic surgery. In order to more effectively identify osteoporosis-related fracture risk and develop advanced treatment approaches for femur fractures, it is necessary to acquire a greater understanding of how osteoporosis alters the diaphyseal structure and biomechanical characteristics. The current investigation uses computational analyses to comprehensively examine how femur structure and its associated properties differ between healthy and osteoporotic bones. The results indicate statistically significant differences in multiple geometric properties between healthy femurs and osteoporotic femurs. Additionally, localized disparities in the geometric properties are evident. Overall, this approach will be beneficial in the development of new diagnostic procedures for highly detailed patient-specific detection of fracture risk, for establishing novel injury prevention treatments, and for informing advanced surgical solutions.
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Braun BM, Ross JA, Swart EF. "Nailable" Does Not Always Mean Reducible in Distal Femur Fractures: Arthroplasty Component and Nail Design Matter. Orthopedics 2023; 46:35-38. [PMID: 36206509 DOI: 10.3928/01477447-20221003-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Distal femur fractures above a total knee arthroplasty (TKA) are challenging. These fractures can be fixed with a retrograde intramedullary nail (rIMN), but the design of the femoral component of the TKA influences the starting point for an rIMN. We performed a biomechanical study to evaluate how different TKA components influence the starting point for an rIMN and how that can lead to a deformity in the sagittal plane. We simulated a distal femur fracture with three different arthroplasty components. We used three different implants to simulate fracture reduction and measured the resultant sagittal plane deformity. Low and moderate femoral component ratio (FCR) design components were able to maintain fracture alignment within 5° of anatomic. High FCR component (more posterior starting point) sagittal plane deformities of up to 15° were observed with both the straight and medium Herzog bend nails, which was statistically significant (P<.001). Use of a high Herzog bend nail decreased the deformity by an average of 6°, which was statistically significant (P<.001). There is variability in how the TKA design affects the starting point and thus the sagittal plane alignment after fixation. This study helps quantify the effect of arthroplasty component design on fracture alignment. [Orthopedics. 2023;46(1):35-38.].
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Analysis of 101 Mechanical Failures in Distal Femur Fractures Treated with 3 Generations of Precontoured Locking Plates. J Orthop Trauma 2023; 37:8-13. [PMID: 35862769 DOI: 10.1097/bot.0000000000002460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/12/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate mechanical treatment failure in a large patient cohort sustaining a distal femur fracture treated with a distal femoral locking plate (DFLP). DESIGN This retrospective case-control series evaluated mechanical treatment failures of DFLPs. SETTING The study was conducted at 8 Level I trauma centers from 2010 to 2017. PATIENTS AND PARTICIPANTS One hundred one patients sustaining OTA/AO 33-A and C distal femur fractures were treated with DFLPs that experienced mechanical failure. INTERVENTION The intervention included the treatment of a distal femur fracture with a DFLP, affected by mechanical failure (implant failure by loosening or breakage). MAIN OUTCOME MEASURE The main outcome measures included injury and DFLP details; modes and timing of failure were studied. RESULTS One hundred forty-six nonunions were found overall (13.4%) including 101 mechanical failures (9.3%). Failures occurred in different manners, locations, and times depending on the DFLPs. For example, 33 of 101 stainless steel (SS) plates (33%) failed by bending or breaking in the working length, whereas no Ti plates failed here ( P < 0.05). Eleven of 12 failures with titanium-Less Invasive Stabilization System (92%) occurred by lost shaft fixation, mostly by the loosening of unicortical screws (91%). Sixteen of 44 variable -angled-LCP failures (36%) occurred at the distal plate-screw junction, whereas only 5 of 61 other DFLPs (8%) failed this way ( P < 0.05). Distal failures occurred on average at 23.7 weeks compared with others that occurred at 38.4 weeks ( P < 0.05). Variable -angled-LCP distal screw-plate junction failures occurred earlier (mean 21.4 weeks). CONCLUSION Nonunion and mechanical failure occurred in 14% and 9% of patients, respectively, in this large series of distal femur fracture treated with a DFLP. The mode, location, presence of a prosthesis, and timing of failure varied depending on the characteristics of DFLP. This information should be used to optimize implant usage and design to prolong the period of stable fixation before potential implant failures occur in patients with a prolonged time to union. LEVEL OF EVIDENCE Economic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Jitprapaikulsarn S, Chantarapanich N, Gromprasit A, Mahaisavariya C, Sukha K, Chiawchan S. Dual plating for fixation failure of the distal femur: Finite element analysis and a clinical series. Med Eng Phys 2023; 111:103926. [PMID: 36792233 DOI: 10.1016/j.medengphy.2022.103926] [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: 09/06/2022] [Revised: 10/21/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND The optimal technique for managing distal femur fixation failure remains inconclusive. The author studied the efficacy of a combined proximal humerus locking compression plate (LCP-PH) and 3.5 mm reconstruction plate (LCP-RP) by finite element (FE) analysis and retrospectively described the clinical outcomes of the present technique in such difficult circumstances. METHODS Biomechanical study setting included FE models of the distal femur with remaining holes from previous distal femur LCP (LCP-DF) fixation stabilized with three different constructs i.e., LCP-DF alone, LCP-DF-and-LCP-RP, as well as LCP-PH-and-LCP-RP. All settings were analyzed by using FE under physiological loads. Regarding the clinical series, the outcomes of 8 LCP-DF fixation failures operated on by the present technique were retrospectively reviewed. RESULTS High Implant stress of 911.2 MPa and elastic strain at fracture site of 200.8 µɛ were found when stabilized with LCP-DF. The constructs of LCP-DF-and-LCP-RP, and LCP-PH-and-LCP-RP presented lower implant stress compared to LCP-DF, 511.5, and 617.5 MPa, respectively. The elastic strain of both dual plating constructs was also 4-5 times lower than LCP-DF and differed from each other by approximately 10 µɛ. Regarding the clinical series, bony consolidation was achieved in all cases with a mean duration of 28.5 weeks (range 24-36). An average ROM of the affected knee was 115° (range 105-140). Regarding the KSS, 1 was determined to be excellent and 7 to be good. CONCLUSION By the biomechanical analysis and the clinical results, the construct of LCP-PH-and-LCP-RP could be an effective technique for revision surgery of LCP-DF fixation failure.
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Affiliation(s)
| | - Nattapon Chantarapanich
- Department of Mechanical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha, Chonburi, Thailand.
| | - Arthit Gromprasit
- Department of Orthopedics, Buddhachinaraj Hospital, Phitsanulok, Thailand
| | - Chantas Mahaisavariya
- Department of Orthopedic Surgery, Golden Jubilee Medical Center, Faculty of Medicine Siriraj Hospital, Mahidol University, 888 Salaya, Phutthamonthon District, Nakhon Pathom 73170, Thailand
| | - Kritsada Sukha
- Department of Orthopedics, Buddhachinaraj Hospital, Phitsanulok, Thailand
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Shams SF, Mehdizadeh A, Movahedi MM, Paydar S, Haghpanah SA. The comparison of stress and strain between custom-designed bone plates (CDBP) and locking compression plate (LCP) for distal femur fracture. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2023; 33:191-197. [PMID: 35001211 DOI: 10.1007/s00590-021-03160-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/29/2021] [Indexed: 01/12/2023]
Abstract
BACKGROUND Distal femur fracture is considered one of the most common fractures due to high-energy traumas such as car accidents or low-energy traumas such as osteoporosis. Locking plates are orthopedic implants used for stabilized femur fracture. Thus, designing a bone plate fitted exactly with the patient's bone and correctly fixing bone segments are required for better fracture healing. OBJECTIVES This study aims to design a bone plate based on anthropometric characteristics of patients' femurs and compare performing custom-designed bone plates (CDBP) with the locking compression plate (LCP) by finite element method. MATERIALS AND METHODS In this analytical study, a 3D model of four patients' femur and CDBP were firstly designed in MIMICS 19.0 based on the patient's femur anatomy. After designing the bone plate, the CDBPs and LCP were fixed on the bone and analyzed by finite element method (FEM) in ANSYS, and stress and strain of bone plates were also compared. RESULTS The maximum principal stress for all 3D models of patients' fracture femur by CDBPs was stabilized better than LCP with a decrease by 39.79, 12.54, 9.49, and 20.29% in 4 models, respectively. Also, in all models, the strain of CDBPs is less than LCP. Among the different thicknesses considered, the bone plate with 5 mm thickness showed better stress and strain distribution than other thicknesses. CONCLUSION Customized bone plate designed based on patient's femur anatomical morphology shows better bone-matching plate, resulting in increasing the quality of the fracture healing and fails to any need for additional shaping. TRIAL REGISTRATION NUMBER Design and analysis of an implant were investigated in this study. There was no intervention in the diagnosis and treatment of patients and the study was not a clinical trial.
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Affiliation(s)
- Seyedeh Fatemeh Shams
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Alireza Mehdizadeh
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Mohammad Mehdi Movahedi
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shahram Paydar
- Trauma Research Center, Shahid Rajaee (Emtiaz) Trauma Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyyed Arash Haghpanah
- Department of Solid Mechanics, School of Mechanical Engineering, Shiraz University, Shiraz, Iran
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Oransky M, Galante C, Cattaneo S, Milano G, Motta M, Biancardi E, Grava G, Johnson EE, Casiraghi A. Endosteal plating for the treatment of malunions and nonunions of distal femur fractures. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2022:10.1007/s00590-022-03458-x. [PMID: 36539626 DOI: 10.1007/s00590-022-03458-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
PURPOSE To describe the surgical technique and the outcome of a case series of nonunion and malunion of distal femur fractures treated with an endosteal medial plate combined with a lateral locking plate and with autogenous bone grafting. METHODS We retrospectively analyzed a series of patients with malunion or nonunion of the distal femur treated with a medial endosteal plate in combination with a lateral locking plate, in a period between January 2011 and December 2019, Database from chart review was obtained including all the clinical relevant available baseline data (demographics, type of fracture, mechanism of injury, time from injury to surgery, number of previous surgical procedures, type of bone graft, and type of lateral plate). Time to bone healing, limb alignment at follow-up and complications were documented. RESULTS Ten patients were included into the study: 7 male and 3 female with mean age of 48.3 years (range 21-67). The mechanism of trauma was in 8 cases a road traffic accident and in 2 cases a fall from height. According to AO/OTA classification 5 fractures were 33 A3, 3 were 33 C1, 1 was 33 C2 and 1 was 33 C3. The average follow up was 13.5 months. In all cases but one bony union was achieved. Bone healing was observed in average 3.3 months after surgery. No intraoperative or postoperative complications were reported. CONCLUSION A medial endosteal plate is a useful augmentation for lateral plate fixation in nonunion or malunion following distal femur fractures, particularly in cases of medial bone loss, severe comminution, or poor bone quality. LEVEL OF EVIDENCE Level IV (retrospective case series).
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Affiliation(s)
- Michel Oransky
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
| | - Claudio Galante
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
| | - Stefano Cattaneo
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
| | - Giuseppe Milano
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Viale Europa 11, 25123, Brescia, BS, Italy
| | - Marcello Motta
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Viale Europa 11, 25123, Brescia, BS, Italy.
| | - Elena Biancardi
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
| | - Giuseppe Grava
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
| | - Eric E Johnson
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA Center for the Health Sciences, Los Angeles, CA, 90095-6902, USA
| | - Alessandro Casiraghi
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy
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Paiva MDM, Leal DP, Kuroki PK, Barroso BG, Reyna MAA, Leonhardt MDC, Silva JDS, Kojima KE. DISTAL FEMORAL FRACTURES FROM HIGH-ENERGY TRAUMA: A RETROSPECTIVE REVIEW OF COMPLICATION RATE AND RISK FACTORS. ACTA ORTOPEDICA BRASILEIRA 2022; 30:e256896. [PMID: 36506858 PMCID: PMC9721413 DOI: 10.1590/1413-785220223002e256896] [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: 10/01/2021] [Accepted: 12/03/2021] [Indexed: 12/05/2022]
Abstract
Objective Determine complications' incidence and risk factors in high-energy distal femur fractures fixed with a lateral locked plate. Methods Forty-seven patients were included; 87.2% were male, and the average age was 38.9. The main radiographic parameters collected were distal lateral femoral angle (DFA), distal posterior femoral angle (DPLF), comminution length, plate length, screw working length, bone loss, and medial contact after reduction and plate-bone contact, location of callus formation, and implant failure. The complications recorded were nonunion, implant failure, and infection. Results Complex C2 and C3 fractures accounted for 85.1% of cases. Open fractures accounted for 63.8% of cases. The mean AFDL and AFDP were 79.8 4.0 and 79.3 6.0, respectively. The average total proximal and distal working lengths were 133.3 42.7, 60.4 33.4, and 29.5 21.8 mm, respectively. The infection rate was 29.8%, and the only risk factor was open fracture (p = 0.005). The nonunion rate was 19.1%, with longer working length (p = 0.035) and higher PDFA (p = 0.001) as risk factors. The site of callus formation also influenced pseudoarthrosis (p = 0.034). Conclusion High-energy distal femoral fractures have a higher incidence of pseudoarthrosis and infection. Nonunion has greater working length, greater AFDL, and absence of callus formation on the medial and posterior sides as risk factors. The risk factor for infection was an open fracture. Level of Evidence III; Retrospective Cohort Study .
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Affiliation(s)
- Micael de Mesquita Paiva
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Daniel Peixoto Leal
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Paulo Ken Kuroki
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Barbara Garcia Barroso
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Marco Antonio Avalos Reyna
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Marcos de Camargo Leonhardt
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Jorge dos Santos Silva
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
| | - Kodi Edson Kojima
- Universidade de São Paulo, Faculty of Medicine, Hospital das Clínicas, Institute of Orthopedics and Traumatology, Trauma Group, HC-DOT/FMUSP, São Paulo, SP, Brazil
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Evaluation of bone healing process after intramedullary nailing for femoral shaft fracture by quantitative computed tomography-based finite element analysis. Clin Biomech (Bristol, Avon) 2022; 100:105790. [PMID: 36327546 DOI: 10.1016/j.clinbiomech.2022.105790] [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: 04/25/2022] [Revised: 09/21/2022] [Accepted: 10/02/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND There is no proven method for quantitative evaluation of bone healing progress or decision to remove the nail after intramedullary nailing for femoral shaft fractures. Finite element analysis has become commonly utilized in bone analysis, but it may also be used to evaluate callus. The goal of this study was to use quantitative CT-based finite element analysis to assess the bone healing process and predict bone strength with the nail removed. METHODS Quantitative CT-based finite element analysis was conducted on CT images from patients who had intramedullary nailing after a femoral shaft fracture at 6, 12, and 15 months postoperatively. The failure risk of the callus was evaluated with maximal load throughout the gait cycle. The tensile failure ratio was calculated using the volume ratio of the callus element with a tensile failure risk ≥100%. A virtual model with the nail removed was built for bone strength study, and the strength was calculated using the displacement-load curve. FINDINGS The tensile failure ratio reduced with time, reaching 11.6%, 2.6%, and 0.5% at 6, 12, and 15 months postoperatively, respectively, consistent with bone healing inferred from imaging results. At 15 months, the bone strength at nail removal grew to 212, 2670, and 3385 N, surpassing the healthy side's 2766 N. INTERPRETATION Quantitative CT-based finite element analysis enables mechanical assessment during the bone healing process and is expected to be applied to the selection of revision surgery. It is also applicable to the nail removal decision.
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Grisdela P, Striano B, Shapira S, Heng M. Does distance from joint line influence complications after distal femur fractures in native and periprosthetic knees? Knee 2022; 37:80-86. [PMID: 35700587 DOI: 10.1016/j.knee.2022.05.012] [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: 04/29/2021] [Revised: 05/23/2022] [Accepted: 05/28/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Distal femur fractures are projected to increase in incidence secondary to an aging population and growing utilization of total knee arthroplasty. Surgical management is the standard of care, but optimal treatment for far distal fractures is still unclear. Our study investigates if there are distal femur fractures too distal to be treated with lateral locked plating in periprosthetic fractures. METHODS One hundred and ten consecutive patients treated with locked plating for distal femur fractures around a total knee replacement were identified using CPT codes. Fractures were classified by length of the distal fracture segment and Su classification. Complications studied were nonunion, malunion, infection, further fracture related surgery, readmission within 90 days, and mortality within 1 year of surgery. Sixty six fractures met inclusion criteria of 180 days of follow-up or sustaining a complication prior to180 days. RESULTS The size of the distal fracture segment and Su classification did not correlate with increased complication rate in periprosthetic distal femur fractures. CONCLUSIONS There was no difference between complications following lateral locked plating of distal femur fractures based on the size of the distal fracture segment in periprosthetic fractures. Lateral locked plating is an effective treatment modality for these fractures regardless of how distal the fracture extends.
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Affiliation(s)
- Phillip Grisdela
- Harvard Combined Orthopaedic Residency Program, Boston, MA, USA.
| | - Brendan Striano
- Harvard Combined Orthopaedic Residency Program, Boston, MA, USA.
| | - Shay Shapira
- Department of Orthopedic Surgery, Meir Medical Center, Kfar Saba, Israel; Harvard Medical School Orthopaedic Trauma Initiative, Boston MA, USA.
| | - Marilyn Heng
- Harvard Medical School Orthopaedic Trauma Initiative, Boston MA, USA; Massachusetts General Hospital, Department of Orthopaedic Surgery, Boston, MA, USA.
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Practical approach to the native distal femur fractures in the elderly: A rapid review over the recent trends. Injury 2022; 53:2389-2394. [PMID: 35644641 DOI: 10.1016/j.injury.2022.05.014] [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: 04/14/2021] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 02/02/2023]
Abstract
Significant work has been done in recent years on treatment strategies for distal femur fractures. Inclusive reviews on periprosthetic fractures of distal femur have been carried out recently, but there is a lack of such reviews on the subject of native distal femur fractures in the recent literature. In this narrative review, we are set out to address the latest updates on geriatric non-periprosthetic distal femur fractures, and perform a rapid review over different treatment options, arriving at a summarized proposed treatment algorithm.
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Barzen S, Buschbeck S, Hoffmann R. [Distal femoral fractures]. UNFALLCHIRURGIE (HEIDELBERG, GERMANY) 2022; 125:507-517. [PMID: 35725933 DOI: 10.1007/s00113-022-01197-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
CLINICAL ISSUE Fractures of the distal femur represent rare but serious injuries with a high 1‑year mortality. An increasingly older patient population requires adapted treatment concepts. STANDARD TREATMENT PROCEDURE Surgical treatment using angular stable plating and retrograde nailing is the standard procedure. Conservative treatment is only indicated in cases of low demands and high perioperative risks of the patient. TREATMENT INNOVATIONS Primary double plate osteosynthesis and primary implantation of a distal femoral replacement represent new treatment procedures and show promising initial results in the collective of geriatric patients. DIAGNOSTIC WORK-UP Conventional radiographs in 2 planes and computed tomography with multiplanar and 3D reconstructions should be performed to enable an adequate assessment of the indications and treatment planning. PERFORMANCE Nonunion rates of plate and nail osteosyntheses range from 4% to 10%. No significant differences in long-term results can be observed. The results regarding double plate osteosynthesis and distal femoral replacement so far do not show any disadvantages compared to the existing procedures but there is still insufficient data for general recommendations. ASSESSMENT Complex fractures with extensive reconstructive procedures and treatment by distal femoral replacement should be performed in specialized centers. PRACTICAL RECOMMENDATIONS The gold standard is still surgical treatment by means of minimally invasive angular stable plate or retrograde nail osteosynthesis. Complex fracture forms require individual treatment planning considering all currently available treatment options.
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Affiliation(s)
- S Barzen
- Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Unfallchirurgie und orthopädische Chirurgie, Friedberger Landstr. 430, 60389, Frankfurt am Main, Deutschland.
| | - S Buschbeck
- Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Unfallchirurgie und orthopädische Chirurgie, Friedberger Landstr. 430, 60389, Frankfurt am Main, Deutschland
| | - R Hoffmann
- Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Unfallchirurgie und orthopädische Chirurgie, Friedberger Landstr. 430, 60389, Frankfurt am Main, Deutschland
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Ziranu A, Noia G, Cipolloni V, Coviello M, Maccagnano G, Liuzza F, Maccauro G, Nasto LA, Pola E. Revision Surgery Using Retrograde Nail versus Replating in Nonunion Distal Femur Fracture Treated with Plate. Adv Orthop 2022; 2022:5742743. [PMID: 35694104 PMCID: PMC9184226 DOI: 10.1155/2022/5742743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/27/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022] Open
Abstract
Articular distal femur fractures represent 4% to 6% of femur fractures. Locking compression plates (LCPs) are the main treatment option. Nevertheless, a reoperation rate of 12.9% has been reported; nonunion is reported at 4.8%, delayed union at 1.6%, and malunion at 0.6%. Treatment of nonunions can be challenging as no unanimous consensus regarding the best surgical technique has been reached. The aim of this study was to evaluate and compare two types of revision surgery as treatment of LCP-treated articular distal femoral fracture nonunion: retrograde nail or replating. A retrospective cohort study of patients admitted from January 2015 to February 2017 for nonunion of AO/OTA 33C2 fractures previously treated with a lateral LCP was conducted. Patients were treated either with intramedullary nailing (Group A) or with replating (Group B). One independent observer performed clinically and radiographically followed up at 1, 3, 6, 9, 12, 24, and 36 months after surgery. The nonunion scoring system (NUSS) was used. Nine patients were included in our study. The mean follow-up was 2 years. Five patients were treated with intramedullary nailing and four with replating. The NUSS score was 24.2 ± 6.8 in the nailing group and 37.3 ± 3 in the replating group (P=0.03). In the nailing group, radiographic consolidation was obtained in all cases. In the replating group, nonunion was found in 3 patients and failure of osteosynthesis in one patient. Therefore, four patients (Group B) underwent implant removal and retrograde femoral nailing, obtaining radiological healing. The union time was 7.6 months in the nailing group. Retrograde intramedullary nailing can be used as an effective treatment of aseptic AO-33C distal femoral nonunion following primary locking plating.
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Affiliation(s)
- Antonio Ziranu
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome 00168, Italy
| | - Giovanni Noia
- Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Ospedali Riuniti di Foggia, Foggia 71122, Italy
| | - Valerio Cipolloni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome 00168, Italy
| | - Michele Coviello
- Department of Basic Medical Science, Neuroscience and Sensory Organs, Azienda Ospedaliero Universitaria Consorziale Policlinico, Bari 70124, Italy
| | - Giuseppe Maccagnano
- Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Ospedali Riuniti di Foggia, Foggia 71122, Italy
| | - Francesco Liuzza
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome 00168, Italy
| | - Giulio Maccauro
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome 00168, Italy
| | - Luigi Aurelio Nasto
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania “Luigi Vanvitelli” School of Medicine, Naples 80138, Italy
| | - Enrico Pola
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania “Luigi Vanvitelli” School of Medicine, Naples 80138, Italy
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Pasque CB, Pappas AJ, Cole Jr CA. Intramedullary bone pedestal formation contributing to femoral shaft fracture nonunion: A case report and review of the literature. World J Orthop 2022; 13:528-537. [PMID: 35633740 PMCID: PMC9124995 DOI: 10.5312/wjo.v13.i5.528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/28/2021] [Accepted: 04/25/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Femoral shaft fracture is a commonly encountered orthopedic injury that can be treated operatively with a low overall delayed/nonunion rate. In the case of delayed union after antegrade or retrograde intramedullary nail fixation, fracture dynamization is often attempted first. Nonunion after dynamization has been shown to occur due to infection and other aseptic etiologies. We present a unique case of diaphyseal femoral shaft fracture nonunion after dynamization due to intramedullary cortical bone pedestal formation at the distal tip of the nail.
CASE SUMMARY A 37-year-old male experienced a high-energy trauma to his left thigh after coming down hard during a motocross jump. Evaluation was consistent with an isolated, closed, left mid-shaft femur fracture. He was initially managed with reamed antegrade intramedullary nail fixation but had continued thigh pain. Radiographs at four months demonstrated no evidence of fracture union and failure of the distal locking screw, and dynamization by distal locking screw removal was performed. The patient continued to have pain eight months after the initial procedure and 4 mo after dynamization with serial radiographs continuing to demonstrate no evidence of fracture healing. The decision was made to proceed with exchange nailing for aseptic fracture nonunion. During the exchange procedure, an obstruction was encountered at the distal tip of the failed nail and was confirmed on magnified fluoroscopy to be a pedestal of cortical bone in the canal. The obstruction required further distal reaming. A longer and larger diameter exchange nail was placed without difficulty and without a distal locking screw to allow for dynamization at the fracture site. Post-operative radiographs showed proper fracture and hardware alignment. There was subsequently radiographic evidence of callus formation at one year with subsequent fracture consolidation and resolution of thigh pain at eighteen months.
CONCLUSION The risk of fracture nonunion caused by intramedullary bone pedestal formation can be mitigated with the use of maximum length and diameter nails and close follow up.
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Affiliation(s)
- Charles B Pasque
- Department of Orthopaedic Surgery and Rehabilitation, University of Oklahoma College of Medicine, Oklahoma City, OK 73104, United States
| | - Alexander J Pappas
- Department of Orthopaedic Surgery and Rehabilitation, University of Oklahoma College of Medicine, Oklahoma City, OK 73104, United States
| | - Chad A Cole Jr
- University of Colorado School of Medicine, Aurora, CO 80045, United States
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Low-Intensity Pulsed Ultrasound in the Treatment of Nonunions and Fresh Fractures: A Case Series. TRAUMA CARE 2022. [DOI: 10.3390/traumacare2020014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
It is estimated that approximately 5% to 10% of fractures will evolve into nonunions. Nonunions have a significant impact on patient quality of life and on socioeconomic costs. Low-intensity pulsed ultrasound (LIPUS) is a non-invasive therapy widely used within the orthopedic community to accelerate the healing of fresh fractures, to minimize delayed healing, and to promote healing of nonunions. In this case series, 46 nonunions and 19 fresh fractures were treated with LIPUS for at least three months or until fracture healing. Bone healing was assessed both at a radiological and a functional level. Of the nonunions healed, 89% had a mean healing time of 89 ± 53 days. In the group of fresh fractures, the healing percentage was 95% with a mean healing time of 46 ± 28 days. LIPUS treatment is proven to be safe and well tolerated; there were no adverse events related to the use of the device, even in the presence of internal fixations and infections. LIPUS therapy should be considered a low-risk option both as an adjunct to surgery or as a standalone therapy in the management of nonunion and fresh fractures.
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Bridge plating with decortication, autologous bone graft, and tight closure: a “stepwise surgical diamond concept” for treatment of nonunion in a series of fifty five patients. INTERNATIONAL ORTHOPAEDICS 2022; 46:1241-1251. [DOI: 10.1007/s00264-022-05379-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022]
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Paulsson M, Ekholm C, Jonsson E, Geijer M, Rolfson O. Immediate Full Weight-Bearing Versus Partial Weight-Bearing After Plate Fixation of Distal Femur Fractures in Elderly Patients. A Randomized Controlled Trial. Geriatr Orthop Surg Rehabil 2022; 12:21514593211055889. [PMID: 35145761 PMCID: PMC8822340 DOI: 10.1177/21514593211055889] [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] [Indexed: 11/15/2022] Open
Abstract
Introduction After surgery for distal femur fractures in elderly patients, weight-bearing is commonly restricted. Immediate non-restrictive weight-bearing might have beneficial effects. There are no randomized studies on the topic. The purpose of this study was to compare the functional outcome between immediate full weight-bearing (FWB) as tolerated and partial weight-bearing (PWB) during the first 8 weeks following plate fixation of distal femur fractures in elderly patients. Methods Patients aged 65 years or older with distal femur fractures of AO/OTA types 33 A2, A3, B1, B2, C1, and C2 were included. Exclusion criteria were impaired cognitive function, concomitant injuries, or inability to follow the postoperative regimen. Internal fixation was achieved with an anatomical lateral distal femur plate applied as a strictly bridge-plating construct. The primary outcome measure was the function index of the short musculoskeletal functional assessment (SMFA) after 52 weeks from injury. Results Thirty-two patients were randomized to FWB (n = 11) or PWB (n = 21). After 16 and 52 weeks, there were no differences in the mean SMFA function index between FWB and PWB (36 vs 43, P = .42 and 52 vs 40, P = .18, respectively) nor in the mean EuroQol 5-dimension index or range of motion (ROM). Overall, the SMFA function index was higher at 52 weeks compared with before injury (44 vs 30, P = .001) as was the mean bothersome index (37 vs 21, P = .011). There was no clear difference in the occurrence of adverse events between the treatment groups. Conclusions There were no differences in functional outcome, adverse events, or ROM between immediate FWB and PWB following plate fixation for a distal femur fracture in elderly patients. A distal femur fracture has a negative effect on the functional status of elderly patients that persists at least up to 1 year following injury.
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Affiliation(s)
- Martin Paulsson
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carl Ekholm
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eythor Jonsson
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Mats Geijer
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Ola Rolfson
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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A Comparison of Acute Complications and Mortality Between Geriatric Knee and Hip Fractures: A Matched Cohort Study. J Am Acad Orthop Surg 2021; 29:929-936. [PMID: 34570742 DOI: 10.5435/jaaos-d-20-00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 10/02/2020] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION To compare acute complication and mortality rates for operatively treated, closed, isolated, low-energy geriatric knee fractures (distal femur [DFF] or tibial plateau [TPF]) with hip fractures (HFs). METHODS This is a retrospective cohort study using the American College of Surgeons National Surgical Quality Improvement Program. We identified all patients ≥ 70 years from 2011 to 2016 who underwent surgery for DFF, TPF, or HF. We recorded patient demographics, functional status, complications, and mortality. We matched DFF:TPF:HF patients on a 1:1:10 ratio based on age, sex, body mass index, baseline functional status, and comorbidity. We used the chi square, Fisher exact, and Mann Whitney U tests to compare unadjusted differences between groups and multivariable logistic regression to compare the risk of complications, readmission, or death while adjusting for relevant covariates. RESULTS When compared with HF, patients in the DFF and TPF groups had longer length of stay and time to index surgery and were more likely to be discharged home. The rate of deep vein thrombosis was significantly higher in the TPF group (TPF = 3.9%, DFF = 1.3%, and HF = 1.2%, P = 0.005). CONCLUSION Geriatric knee fractures pose a similar risk of acute complications, mortality, and readmission compared with patients with HF. Future studies investigating strategies to decrease risk in this patient cohort are warranted. LEVEL OF EVIDENCE Therapeutic Level III.
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Liu JF, Zhou ZF, Hou XD, Chen YX, Zheng LP. Hybrid locked medial plating in dual plate fixation optimizes the healing of comminuted distal femur fractures: A retrospective cohort study. Injury 2021; 52:1614-1620. [PMID: 33461771 DOI: 10.1016/j.injury.2021.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Dual plate fixation has been reported to be effective in the treatment of comminuted distal femur fractures (DFFs). However, optimized use of the medial plate and screws is less studied. This study aimed to evaluate the effect of a hybrid configuration of the medial plate in dual plate fixation of comminuted DFFs in promoting fracture healing. MATERIALS AND METHODS We retrospectively analyzed 62 patients with comminuted DFFs (AO/OTA 33-A3/33-C2/33-C3) from January 2015 to March 2020, who were either fixed with lateral locked plating augmented with hybrid locked medial plating (LP-HLMP, n = 32) or lateral locked plating (LLP, n = 30) alone. Specifically, compression screws were applied in the middle of the medial plate and flanked by locking ones at both ends. Baseline characteristics, radiological and clinical outcomes were reviewed and analyzed. Multivariate logistic regression analysis was used to identify predictive factors for early fracture healing, and risk factors for delayed union/nonunion. RESULTS Demographics including age, gender, smoking, diabetes, and injury mechanism were comparable between the two groups. Reduction quality was better in the LP-HLMP group (p < 0.001). Although the LP-HLMP group experienced longer duration of surgery (125 min vs. 100 min, p < 0.001), sign of healing at 3 months was more obvious in this group (75%, 24/32 vs. 30%, 9/30; p < 0.001). The LP-HLMP group also presented with higher union rate (93.8%, 30/32 vs. 56.7%, 17/30; p = 0.001) and lower reoperation rate (0%, 0/32 vs. 13.3%, 4/30; p = 0.049). Kolment score showed no statistical significance between the two groups. Multivariate analysis revealed that younger age (< 60 years) (OR 5.99, 95%CI 1.16 - 31.03; p = 0.001) and LP-HLMP fixation (OR 45.90, 95% CI 4.78 - 440.56; p = 0.001) predict early healing; while smoking (OR 17.80, 95% CI 2.41 - 131.49; p = 0.01) and fracture translation (OR 3.49, 95% CI 1.46 - 8.32; p = 0.01) were identified as risk factors for delayed union/nonunion. CONCLUSION Hybrid locked medial plating in this study favors the healing of comminuted DFFs and reduces reoperation. Additionally, smoking and suboptimal reduction (translation) predict delayed union/nonunion.
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Affiliation(s)
- Jun-Feng Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Zi-Fei Zhou
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Xiao-Dong Hou
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yi-Xing Chen
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Long-Po Zheng
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China; Shanghai Trauma Emergency Center, Shanghai, 200072, China; Orthopedic Intelligent Minimally Invasive Diagnosis & Treatment Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
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Bommireddy L, Leow TW, Gogna R, Clark DI. Should Femoral Shaft fractures in Patients Age Over 60 Years be Managed Using a Hip Fracture Pathway? Injury 2021; 52:1517-1521. [PMID: 33039181 DOI: 10.1016/j.injury.2020.09.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/31/2020] [Accepted: 09/27/2020] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The British Orthopaedic Association published 2019 guidelines 'The Older or Frail Orthopaedic Trauma Patient'. This implements principles of the hip fracture pathway to all fragility fractures. Like hip fractures, femoral shaft fractures in the elderly are also suggested to represent fragility fractures. Femoral shaft fractures in older patients are rare and there is scarce literature detailing their outcomes. We aim to review outcomes of femoral shaft fractures in patients age 60 years and over at our institution and compare them to that of the hip fracture population. MATERIALS AND METHODS We retrospectively reviewed clinical records of a consecutive cohort of patients aged 60 years and over, who sustained a femoral shaft fracture, over a five-year period at our institution. Outcome measures studied were time to surgery, mean length of admission, readmission rate within 30 days, medical and orthopaedic complications, one month and one year mortality. RESULTS We identified 53 patients with a mean age of 78.7 years. On average patients each had 2.7 medical comorbidities. Mean length of admission was 20.0 days and readmission rate within 30 days was 19.1% (n=9). Medical complications affected 41.5% of patients (n=22) and orthopaedic complications affected 9.4% of patients (n=5). Two patients demonstrated nonunion and one patient required revision surgery. Thirty day mortality rate was 13.2% (n=7) which increased to a one year mortality of 26.4% (n=14). CONCLUSION Patients age 60 years and over with femoral shaft fractures have poor medical outcomes and prolonged length of admission. Compared to patients with hip fractures, medical complication rates are at least twice the 13-20% reported for hip fractures. The 30 day mortality rate in patients with femoral shaft fractures was also more than double the 6.1% reported for hip fracture patients by The National Hip Fracture Database in 2018. Femoral shaft fractures are associated with high medical morbidity and mortality. The hip fracture pathway is encompassed in the British Orthopaedic Association guidelines and emphasizes early medical input and a multidisciplinary approach to patient management. Hence, our study supports implementation of these guidelines with aim to improve morbidity and mortality of this vulnerable patient group.
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Affiliation(s)
- L Bommireddy
- University Hospitals of Derby and Burton NHS Foundation Trust, Royal Derby Hospital, Orthopaedic Department, Uttoxeter Road, Derby, UK, DE22 3NE.
| | - T W Leow
- University of Nottingham, Nottingham, UK, NG7 2RD.
| | - R Gogna
- University Hospitals of Derby and Burton NHS Foundation Trust, Royal Derby Hospital, Orthopaedic Department, Uttoxeter Road, Derby, UK, DE22 3NE.
| | - D I Clark
- University Hospitals of Derby and Burton NHS Foundation Trust, Royal Derby Hospital, Orthopaedic Department, Uttoxeter Road, Derby, UK, DE22 3NE.
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Research status of biodegradable metals designed for oral and maxillofacial applications: A review. Bioact Mater 2021; 6:4186-4208. [PMID: 33997502 PMCID: PMC8099919 DOI: 10.1016/j.bioactmat.2021.01.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/10/2021] [Accepted: 01/10/2021] [Indexed: 01/08/2023] Open
Abstract
The oral and maxillofacial regions have complex anatomical structures and different tissue types, which have vital health and aesthetic functions. Biodegradable metals (BMs) is a promising bioactive materials to treat oral and maxillofacial diseases. This review summarizes the research status and future research directions of BMs for oral and maxillofacial applications. Mg-based BMs and Zn-based BMs for bone fracture fixation systems, and guided bone regeneration (GBR) membranes, are discussed in detail. Zn-based BMs with a moderate degradation rate and superior mechanical properties for GBR membranes show great potential for clinical translation. Fe-based BMs have a relatively low degradation rate and insoluble degradation products, which greatly limit their application and clinical translation. Furthermore, we proposed potential future research directions for BMs in the oral and maxillofacial regions, including 3D printed BM bone scaffolds, surface modification for BMs GBR membranes, and BMs containing hydrogels for cartilage regeneration, soft tissue regeneration, and nerve regeneration. Taken together, the progress made in the development of BMs in oral and maxillofacial regions has laid a foundation for further clinical translation.
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Wang Z, Lu Y, Huang Q, Xue H, Ran C, Wang Q, Ma T, Zhang K, Li Z, Sun L. Efficacy and Safety of Long-Term Intravenous Tranexamic Acid Administration for Blood Management in Revision Surgery for Femoral Shaft Nonunion: A Retrospective Case-Control Study. Clin Appl Thromb Hemost 2021; 27:10760296211002277. [PMID: 33845609 PMCID: PMC8047849 DOI: 10.1177/10760296211002277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Femoral shaft nonunion is a complication that seriously affects physiological functions. We aimed to assess the effectiveness and safety of short- and long-term intravenous tranexamic acid (TXA) administration in the perioperative period of revision surgery for femoral shaft nonunion. In this retrospective study, 53 patients undergoing double-locking plates with channel bone grafting technology for the treatment of femoral shaft nonunion were divided into 3 groups: the patients in group A without use TXA during hospitalization, the patients in group B received intravenous (IV) 1-g TXA at 30 min before the surgery and deep soaked 1-g TXA for 5 min before closing the incision, and then 1-g TXA IV again 6 h after surgery, and the patients in group C received 1-g TXA IV before the operation, 1-g TXA topically during the operation, and subsequent long-term 1-g TXA IV until discharged. The primary outcomes were total blood loss (TBL) and hidden blood loss (HBL). The secondary outcomes included actual hemoglobin (Hb) loss values, transfusion requirement, number of units transfused, postoperative laboratory values (Hb, hematocrit, fibrinogen, and D-dimer), visual analogue scale (VAS) scores, and hospitalization time. The mean TBL was lower in group C than in group A (1168 mL vs. 2714 mL, P < 0.001) and group B (1168 mL vs. 1557 mL, P = 0.008). The differences in HBL volumes were also significant between groups A and C (P < 0.001) and between groups A and B (P < 0.01). The actual Hb loss in the 3 groups showed a consistent trend with TBL, but no significant differences between groups B and C (P = 0.23). On postoperative day (POD) 3, the Hb level was higher in group C than in group A (111.1 g/L vs. 94.6 g/L, P = 0.02). No significant differences were found in VAS, hospital stay, thromboembolic complications, incision-related complications, and TXA adverse reactions among groups. Long-term intravenous TXA during hospitalization can effectively reduce perioperative blood loss, Hb drop, and postoperative hyperfibrinolysis, but is associated with an increased incidence of adverse reactions.
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Affiliation(s)
- Zhimeng Wang
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Yao Lu
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China.,The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, People's Republic of China.,Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Qiang Huang
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Hanzhong Xue
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Cheng Ran
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Qian Wang
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Teng Ma
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Kun Zhang
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Zhong Li
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Liang Sun
- Department of Orthopaedics and Trauma, Hong Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, People's Republic of China
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Layon D, Morrell AT, Lee C. The flipped third fragment in femoral shaft fractures: A reason for open reduction? Injury 2021; 52:589-593. [PMID: 32998826 DOI: 10.1016/j.injury.2020.09.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/17/2020] [Accepted: 09/22/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES First introduced by Kuntscher in the 1940s, closed intramedullary nailing of femoral shaft fractures has become the standard of care, with reported union rates up to 99% in some series. However, fractures with large intercalary segments, which are present in 10-34% of femoral shaft fractures, present unique challenges. In particular, how to treat flipped intercalary segments has remained controversial, with some advocating open reduction of these fractures. The purpose of this study was to evaluate the union rates of femoral shaft fractures with flipped intercalary segments treated with closed reduction and intramedullary nail fixation. METHODS A retrospective review of patients with femoral shaft fractures and flipped intercalary segments from January 2000 until January 2018 was performed at a single academic level one tertiary care referral center. All patients between the ages of 16-80 with minimum 6-month follow-up were included. Union rates were evaluated using the radiographic union score of the femur (RUSF). Patients with non-diaphyseal femur fractures, pathologic fractures, incomplete radiographic or clinical follow-up, or open reduction at the time of initial surgery were excluded. RESULTS Twenty-six patients (18 male and 8 female) with a mean age of 32 years (SD 12.8, range 19-65 years) and mean follow-up of 15.9 months (range, 6-82 months) met inclusion criteria. Seven patients had open fractures. The mean size of the flipped intercalary segments was 71.3 mm (range: 30-174 mm), with mean displacement of 6.6 mm (range: 1-37 mm). The mean radiographic union scale in femoral (RUSF) at 6 months was 9 (standard deviation: 1.35). There were two patients who went on to non-union. The overall union rate was 92% (24 patients); the non-union rate was 8% (2 patients). CONCLUSIONS Though uncommon, femoral shaft fractures with flipped intercalary segments present unique challenges to surgical treatment. While previous studies have found the presence of large intercalary segments to be associated with higher rates of non-union, the results of this study challenge prior evidence. In conclusion, the presence of flipped intercalary segments may not require different surgical management than the treatment of conventional femoral shaft fractures. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Daniel Layon
- Virginia Commonwealth University, Department of Orthopaedic Surgery, PO Box 980153, 1200 East Broad Street, Richmond, VA 23298, United States
| | - Aidan T Morrell
- Virginia Commonwealth University, School of Medicine, 1201 E Marshall St, #4-100, Richmond, VA 23298, United States
| | - Christopher Lee
- University of California Los Angeles, Department of Orthopaedic Surgery, 10833 Le Conte Ave, Los Angeles, CA 90095, United States.
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Yoon BH, Park IK, Kim Y, Oh HK, Choo SK, Sung YB. Incidence of nonunion after surgery of distal femoral fractures using contemporary fixation device: a meta-analysis. Arch Orthop Trauma Surg 2021; 141:225-233. [PMID: 32388648 DOI: 10.1007/s00402-020-03463-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Nonunion is the most frequent cause of reoperation and is associated with high morbidity after distal femur fracture (DFF). We examined the rates of nonunion requiring reoperation after fixation for DFF using a locking compression plate (LCP) or retrograde intramedullary nail (RIMN). METHODS We included four studies comparing LCP and RIMN and 38 single-cohort studies reporting LCP or RIMN. In total, 2156 femurs were included and 166 non-unions were detected. We conducted a pair-wise meta-analysis (with a fixed-effects model) on the four comparative studies and a proportional meta-analysis on the 38 articles to estimate the nonunion rate. We performed sensitivity analysis by comparing studies using LCP with less invasive surgical systems (LISS) with those that used RIMN. RESULTS The pairwise meta-analysis showed a similar nonunion rate between the groups [odds ratio: 1.02; 95% confidence interval (CI) 0.94-1.11, p = 0.633]. According to proportional meta-analysis, the pooled prevalence of nonunion was 5% (95% CI 4-7) totally, 6% (95% CI 4-8) in the LCP group, and 4% (95% CI 2-6) in the RIMN group (heterogeneity: p = 0.105). According to the sensitivity analysis, there was no difference in the union rate. The pooled prevalence of nonunion from sensitivity analysis was 4 % (95% CI, 3-5); it was 4% (95% CI, 3-6) in LCP with LISS and was 4% (95% CI, 2-6) in RIMN group (heterogeneity: p = 0.941). CONCLUSION Approximately 5% of patients who underwent LCP or RIMN fixation developed nonunion. Therefore, LCP and RIMN are effective DFF techniques and mastering one of them is essential.
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Affiliation(s)
- Byung-Ho Yoon
- Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, South Korea
| | - In Keun Park
- Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, South Korea
| | - Youngwoo Kim
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyoung-Keun Oh
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea
| | - Suk Kyu Choo
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea
| | - Yerl-Bo Sung
- Department of Orthopaedic Surgery, Inje University College of Medicine, Sanggye Paik Hospital, Seoul, South Korea.
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Korica S, Virijević D, Glišović-Jovanović I, Tabaković D, Kadija M. Intramedular fixation after breaking of the femoral plate. PRAXIS MEDICA 2021. [DOI: 10.5937/pramed2104041k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Any fracture of the femoral shaft presents a challenge to the orthopedic surgeon. Femoral fractures most often occur within polytrauma, by forces of high intensity as is the case with traffic accidents. There are two methods to treat with internal fracture fixation, intra and extra medullary fixation. Both treatments have their advantages and disadvantages and it is necessary to make a good preoperative plan. We present the case of a 23-year-old man who suffered a femoral shaft fracture as a driver in a car accident. He was initially surgically treated with orthopedic repositioning and internal, extramedullary fixation. After 18 months, bending of the osteosynthetic material and dislocation of the fragments with varus and recurvatum were verified. Oligotrophic pseudoarthrosis was also present. Reintervention and fixation with interlocking nail was performed. The weight bearing is allowed after two weeks. After 3 months, patient has full range of motion and there is no palpatory painful sensitivity. Intramedullary fixation is the method of choice for fractures of the femur, especially when there is no comminution and in cases of open fractures of the first and second degree. Rotation of fragments is locked, physical rehabilitation is faster and there is less risk of mal union.
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Gee A, Bougherara H, Schemitsch EH, Zdero R. Biomechanical design using in-vitro finite element modeling of distal femur fracture plates made from semi-rigid materials versus traditional metals for post-operative toe-touch weight-bearing. Med Eng Phys 2020; 87:95-103. [PMID: 33461680 DOI: 10.1016/j.medengphy.2020.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 11/23/2020] [Accepted: 11/29/2020] [Indexed: 01/19/2023]
Abstract
This proof-of-concept study designs distal femur fracture plates from semi-rigid materials vs. traditional metals for toe-touch weight-bearing recommended to patients immediately after surgery. The two-fold goal was to (a) reduce stress shielding (SS) by increasing cortical bone stress thereby reducing the risk of bone absorption and plate loosening, and (b) reduce delayed healing (DH) via early callus formation by optimizing axial interfragmentary motion (AIM). Finite element analysis was used to design semi-rigid plates whose elastic moduli E ensured plates permitted AIM of 0.2 - 1 mm for early callus formation. A low hip joint force of 700 N (i.e. 100% x body weight) was applied, which corresponds to a typical 140 N toe-touch foot-to-ground force (i.e. 20% x body weight) recommended to patients after surgery. Analysis was done using 2 screw materials (steel or titanium) and types (locked or non-locked). Steel and titanium plates were also analyzed. Semi-rigid plates (vs. metal plates) had lower overall femur/plate construct stiffnesses of 508 - 1482 N/mm, higher cortical bone stresses under the plate by 2.02x - 3.27x thereby reducing SS, and lower E values of 414 - 2302 MPa to permit AIM of 0.2 - 1 mm thereby reducing DH.
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Affiliation(s)
- Aaron Gee
- Orthopaedic Biomechanics Lab, Room A6-144, Victoria Hospital, 800 Commissioners Road, London N6A5W9, Canada.
| | - Habiba Bougherara
- Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, Canada.
| | - Emil H Schemitsch
- Orthopaedic Biomechanics Lab, Room A6-144, Victoria Hospital, 800 Commissioners Road, London N6A5W9, Canada; Department of Surgery (Division of Orthopaedic Surgery), Western University, London, Canada.
| | - Radovan Zdero
- Orthopaedic Biomechanics Lab, Room A6-144, Victoria Hospital, 800 Commissioners Road, London N6A5W9, Canada; Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, Canada; Department of Surgery (Division of Orthopaedic Surgery), Western University, London, Canada; Department of Mechanical and Materials Engineering, Western University, London, Canada.
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Yuan Y, Luo B, Hao Q, Yuan J, Qu GB, Hao PD, Zeng ZJ, Yang JF, Xu ZJ. Clinical outcomes of revision with retrograde intermedullary nailing for failed plating of distal femoral fractures: a retrospective study. INTERNATIONAL ORTHOPAEDICS 2020; 44:2437-2442. [PMID: 32654056 DOI: 10.1007/s00264-020-04621-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 05/12/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE To assess the feasibility and effectiveness of retrograde intramedullary nail (RIN) revision surgeries for locking compression plate (LCP) failure in distal femoral fractures. METHODS This retrospective study included 13 patients who suffered from metalwork failures after they initially underwent open reduction and LCP fixation. In patients who eventually underwent RIN revision from January 2014 to December 2016, range of motion (ROM) and Hospital for Special Surgery (HSS) scores obtained before surgery and at the final follow-up time were analysed. RESULTS The average operative time was 155 minutes (range, 120-210 minutes), and the average blood loss volume was 650 ml (range, 200-1350 ml). There were two cases of complications (15.38%): one was calf muscle vein thrombosis, and the other was a superficial infection. No deep tissue infection or deep vein thrombosis was observed post-operatively. The average follow-up time was 16 months (range, 12-24 months). All fractures healed in a mean of 6.5 months (range, 4-12 months), and one patient underwent an additional bone graft surgery that did not involve a bone graft during the RIN revision operation (this eventually healed at 12 months post-operatively). The mean ROM before the operation was 86.92 ± 12.34°. At the final follow-up, the mean ROM was 112.69 ± 9.27°. There was a significant difference between pre-operative and post-operative ROM (P < 0.01). The mean HSS score improved significantly from 38.85 ± 9.62 points pre-operatively to 79.62 ± 5.42 points post-operatively. There was a significant difference between pre-operative and post-operative HSS scores (P < 0.01). CONCLUSIONS RIN revision surgery achieved excellent clinical results in patients with LCP failure.
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Affiliation(s)
- Yi Yuan
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Bing Luo
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Qi Hao
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Jun Yuan
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Gang-Bo Qu
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Pan-Deng Hao
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Zhi-Jiang Zeng
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Jia-Fu Yang
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China.
| | - Zu-Jian Xu
- Department of Orthopaedics, Traditional Chinese Medicine Hospital, Southwest Medical University, 182# Chunhui Road, Luzhou, 646000, Sichuan, People's Republic of China.
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Lu J, Guo SC, Wang QY, Sheng JG, Tao SC. J-bone graft with double locking plate: a symphony of mechanics and biology for atrophic distal femoral non-union with bone defect. J Orthop Surg Res 2020; 15:144. [PMID: 32293488 PMCID: PMC7161247 DOI: 10.1186/s13018-020-01636-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/13/2020] [Indexed: 12/13/2022] Open
Abstract
Objective Atrophic distal femur non-union with bone defect (ADFNBD) has been a worldwide challenge to treat due to the associated biological and mechanical problems. The purpose of this study was to introduce a new solution involving the use of a J-shaped iliac crest bone graft (J-bone) combined with double-plate (DP) in the treatment of femoral non-union. Methods Clinically, 18 patients with ADFNBD were included in this retrospective study and were treated with a combination of J-bone graft and DP. The average follow-up time was 22.1 ± 5.5 months (range, 14 to 34 months). The imaging information and knee joint activity tests and scores were used to evaluate the time to weight-bearing, the time to non-union healing, and the knee joint mobility. A finite element analysis was used to evaluate the differences between the following: (1) the use of a lateral locking plate (LLP) only group (LLP-only), (2) a DP only group (DP-only), (3) a DP with a J-bone group (DP+J-bone), and (4) an LLP with a J-bone group (LLP+J-bone) in the treatment of ADFNBD. A finite element analysis ABAQUS 6.14 (Dassault systems, USA) was used to simulate the von Mises stress distribution and model displacement of the plate during standing and normal walking. Result All patients with non-union and bone defect in the distal femur achieved bone healing at an average of 22.1 ± 5.5 months (range, 14 to 34 months) postoperatively. The average healing time was 6.72 ± 2.80 months. The knee Lysholm score was significantly improved compared with that before surgery. Under both 750 N and 1800 N axial stress, the maximum stress with the DP+J-bone structure was less than that of the LLP+J-bone and DP-only structures, and the maximum stress of J-bone in the DP+J-bone was significantly less than that of the LLP+J-bone+on structure. The fracture displacement of the DP+J-bone structure was also smaller than that of the LLP+J-bone and DP-only structures. Conclusion J-bone combined with DP resulted in less maximum stress and less displacement than did a J-bone combined with an LLP or a DP-only graft for the treatment of ADFNBD. This procedure was associated with less surgical trauma, early rehabilitation exercise after surgery, a high bone healing rate, and a satisfactory rate of functional recovery. Therefore, a combination of J-bone and DP is an effective and important choice for the treatment of ADFNBD.
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Affiliation(s)
- Jian Lu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China.,The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China
| | - Shang-Chun Guo
- Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Qi-Yang Wang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Jia-Gen Sheng
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China.
| | - Shi-Cong Tao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China.
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``Sandwich technique" with dual strut allograft in surgical treatment of femoral nonunion. Injury 2020; 51:1057-1061. [PMID: 32107008 DOI: 10.1016/j.injury.2020.02.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The treatment of femoral nonunion is challenging for both the surgeon and the patient. Strut allografts increase the bone stock, enhance fracture healing and increase stability by acting as a biological plate. In this study, we aimed to report the results of the sandwich technique with two-strut allograft in the treatment of oligotrophic or atrophic femoral nonunions. METHODS Medical records of the patients who were treated due to femoral nonunion in a single center were retrospectively reviewed. Twenty-one patients (10 males, 11 females) with a mean age of 49 (range: 21 to 79) years were included in the study. The left side was affected in 11 patients, whereas the right side was affected in ten. The patients had 11 femoral shaft fractures, seven proximal femoral fractures and three distal femoral fractures. The mean time from the previous operation to the nonunion surgery was 9.6 (range: 6 to 22) months. RESULTS Union was achieved in all patients after a mean period of 6.2 (range: 4 to 10) months. The mean follow-up time was 46.8 (range: 12 to 86) months. One patient had superficial surgical site infection in the autologous graft donor site. CONCLUSION The sandwich technique with two-strut allograft provides good results in the treatment of femoral nonunion. The technique can be used on any type of nonunion, at any segment of the femur and can be combined with different fixation techniques.
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