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Akkurt E, Yıldırım M, Erenler F, Tosun OM, Akkurt MF, Akkurt B, Şen Z, Olçar AH. Mechanical evaluation for the finite element analysis of intramedullary nailing and plate screw system used in humerus transverse fractures. J Orthop 2025; 61:66-71. [PMID: 39411507 PMCID: PMC11472024 DOI: 10.1016/j.jor.2023.10.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/19/2023] [Accepted: 10/25/2023] [Indexed: 10/19/2024] Open
Abstract
Aim This study aims to examine the commonly used plate screw system and intramedullary nailing method in osteosynthesis in humeral shaft fractures in terms of stress shielding using finite element analysis. Material and methods Images were obtained by computerized tomography (CT) to create a 3D model of the humerus bone. After the CT images were transferred to the ANSYS 2021 R2 program (ANSYS, Inc., Canons-burg, PA), a transverse fracture model was created from the shaft region of the humeral bone meshed to the humerus bone and modeled in the 3D environment. Results The tetrahedron mesh structure was used for the finite element models in our study. The element size was chosen as 3.5 mm for the bone model and 2 mm for the plate and intramedullary nail models. The node numbers of bone, intramedullary nail, and plate were 91230, 462578, and 581352, respectively. The element numbers of bone, intramedullary nail, and plate were 61350, 311285, and 370350, respectively. Maximum stress values of 260 MPa on the nail and 280 MPa on the plate were detected in this study. Conclusion Fewer stress values were obtained and stress concentrations were not formed on the implant in osteosynthesis performed by intramedullary nailing. It can be concluded that this study may guide further studies for those focusing on it and may contribute to the development of a more comprehensive understanding of the topic.
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Khasin M, Darcy GM, Mah E, Bella CD. Role of vascularised fibula graft in the surgical management of radiation-induced midshaft femoral fractures. Case report and literature review. World J Surg Oncol 2024; 22:334. [PMID: 39707363 DOI: 10.1186/s12957-024-03616-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Accepted: 12/03/2024] [Indexed: 12/23/2024] Open
Abstract
BACKGROUND Post-radiation fractures (PRF) are a recognised complication of radiation treatment for soft tissue sarcomas. They have a low incidence and typically occur up to 5 years following treatment, more commonly affecting the pelvis, ribs and femur. Due to radiation-induced changes in bone, PRFs typically require more complicated intervention compared to post-trauma fractures, however, limited literature exists, particularly in regards to mid-shaft femoral PRFs. We report a case of a mid-shaft femoral PRF managed with a modified onlay free vascularised fibular grafting (FVFG). CASE PRESENTATION A 40-year-old male with a history of left quadriceps clear cell sarcoma successfully treated with wide local excision, chemotherapy and radiotherapy 18 years prior presented with a displaced oblique pathological fracture of his left femoral shaft. He was initially treated operatively with intramedullary nailing, however, repeat imaging at the one-year post-operative review demonstrated persistent hypotrophic non-union of the fracture. 16 months following the initial fracture, the patient underwent further surgical intervention with implantation of a modified onlay FVFG to the anterior aspect of the distal femur without nail removal. One-year post-revision, the patient was pain-free with normal mobility and imaging of both the graft and fracture site demonstrated complete union. CONCLUSION Despite their operative complexity, we suggest that FVFGs should be considered for treating non-union of mid-shaft femoral PRFs due to their ability to promote healing and bone union in irradiated bone. Here we describe an original technique of a modified onlay FVFG which can be used in PRFs, and we have put this technique in the context of the current literature in FVFG.
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Pereira S, Garabano G, Alamino LP, Bidolegui F, Angel Pesciallo C. Do two distal locking screws in two planes offer the best option in the nailing of diaphyseal tibial fractures? J Clin Orthop Trauma 2024; 59:102802. [PMID: 39639942 PMCID: PMC11615569 DOI: 10.1016/j.jcot.2024.102802] [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: 01/29/2024] [Revised: 09/27/2024] [Accepted: 11/06/2024] [Indexed: 12/07/2024] Open
Abstract
Background Although the intramedullary nail represents the treatment for most tibia diaphyseal fractures, there is no agreement on the configuration of the distal locking screws. Therefore, this study aimed to investigate the impact of the configuration of distal locking bolts on the healing of a tibial shaft fracture. Methods We retrospectively analyzed 170 closed fractures of the tibia diaphyseal operated consecutively between 2018 and 2021. Patients with postoperative unacceptable reduction (>5° in any plane or gap >4 mm), nail-canal ratio <0.78, and less than 12 months of follow-up were excluded. Using a univariate and multivariate analysis, we analyzed comorbidities (smoking, Body mass index >30, diabetes), fracture type (OTA/AO), the number (one, two, three distal locking screws), and configuration (uniplanar, biplanar, triplanar) of distal locking screws between patients with and without a bone union. Results One hundred and forty-two fractures were available for analysis. The bone union and non-union rates were 89.4 % (n = 127) and 10.6 % (n = 15), respectively. The multivariate analysis showed that type A fractures (OR 6.67, p = 0.010) and using two distal locking screws with a biplanar configuration (OR 3.63, p = 0.036) were independent variables related to bone union. In contrast, smoking habit (OR 0.12, p = 0.041), fractures type B (OR 0.22, p = 0.013), and uniplanar fixation (OR 0.51, p = 0.003) were related to non-union. Conclusion The findings of this study suggest that using two distal locking screws (anteroposterior + mediolateral) in the nailing of closed tibial diaphyseal fracture represents the optimal configuration, offering a higher likelihood of healing compared to other locking options.
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Le Baron M, Allal R, Tarchichi J, Maman P, Volpi R, Flecher X. Rotatory malunion following antegrade intramedullary femoral nailing for femoral shaft fractures: incidence and risk factors. INTERNATIONAL ORTHOPAEDICS 2024; 48:3235-3236. [PMID: 39327263 DOI: 10.1007/s00264-024-06332-z] [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: 08/17/2024] [Accepted: 09/15/2024] [Indexed: 09/28/2024]
Abstract
DESIGN Retrospective study. SETTING Level I academic Trauma Center. PATIENT SELECTION CRITERIA Adult patients with femoral shaft fractures in which a bilateral computed-tomography (CT) scan of both femurs was performed, with a two years minimal follow-up. OUTCOME MEASURES AND COMPARISONS Criteria related to the patient and the fracture were studied. We fixed the following angles, i.e. 10° and 15°, as references for calculating the RM.
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Mehnert E, Möller FS, Hofbauer C, Weidlich A, Winkler D, Troost EGC, Jentsch C, Kamin K, Mäder M, Schaser KD, Fritzsche H. Palliative care of proximal femur metastatic disease and osteolytic lesions: results following surgical and radiation treatment. BMC Cancer 2024; 24:1431. [PMID: 39574021 PMCID: PMC11580346 DOI: 10.1186/s12885-024-13170-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2024] [Accepted: 11/07/2024] [Indexed: 11/25/2024] Open
Abstract
BACKGROUND Femoral bone metastases (FBM) or lesions (FBL) can lead to loss of mobility and independence due to skeletal-related events (SRE), e.g. pain, deformity and pathological fractures. Aim of this study was to analyze effects of radiotherapy and surgery, different surgical techniques and complications on disease-specific survival (DSS). METHODS Patients who underwent palliative therapy for FBM or FBL between 2014 and 2020 were retrospectively analyzed. Chi-square test was used to detect intergroup differences. Survival was calculated using Kaplan-Meier method, Cox regression and compared using log-rank test. Complications were evaluated using Chi-Square test. RESULTS 145 patients were treated for proximal femoral BM/BL or pathologic fractures (10 bilaterally). Three groups were classified: surgery only (S, n = 53), surgery with adjuvant radiation (S + RT, n = 58), and primary radiation only (RT, n = 44). Most common primary tumors were breast (n = 31), prostate (n = 27), and non-small cell lung cancer (n = 27). 47 patients underwent surgery for an impending, 61 for a manifest pathological fracture. There were no significant differences in DSS between the 3 groups (S = 29.8, S + RT = 32.2, RT = 27.1 months), with the S + RT group having the longest one-year survival. Local complications occurred in 25 of 145 patients after a mean interval of 9.9 months. CONCLUSION Due to the steadily increasing incidence and survival of patients with FBM/FBL, indication for prevention and treatment of painful and immobilizing SREs should be critically assessed. Surgical treatment should always be performed with maximum stability and, whenever possible, adjuvant RT.
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Jadib I, Rachidi HE, Abdennaji S, Messoudi A, Rafai M. Irreducible posterior fracture-dislocation of the hip associated with an ipsilateral femoral shaft fracture: A case report and review of the literature. Int J Surg Case Rep 2024; 124:110365. [PMID: 39396491 PMCID: PMC11563161 DOI: 10.1016/j.ijscr.2024.110365] [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: 05/23/2024] [Revised: 09/23/2024] [Accepted: 09/28/2024] [Indexed: 10/15/2024] Open
Abstract
INTRODUCTION Ipsilateral fractures of the shaft of the femur combined with hip dislocations are extremely rare injuries, presenting a difficult diagnostic and therapeutic challenge. Diagnosis of hip dislocation is often delayed, due to the focus on femoral fracture. CASE PRESENTATION This article presents a case never described before of a 19-year-old patient who sustained this unusual combination of injuries as a result of a road traffic accident. The patient had an irreducible posterior hip fracture-dislocation associated with an ipsilateral femoral shaft fracture. Closed reduction attempts were unsuccessful, leading to the requirement for open reduction, via the posterolateral approach of the hip, which revealed that the femoral head buttonholed through the capsule. We proceeded to the reduction of the left hip with the osteosynthesis of the posterior wall acetabular fragment, and then the femur shaft fracture was fixed using an intramedullary nail. After 19 months postoperative follow-up, the patient had full range motion of the affected hip without any pain. DISCUSSION Closed reduction techniques, including various external devices, have been explored, with some success in specific cases. However, open reduction remains a crucial option, especially in irreducible dislocations. Complications, such as avascular necrosis of the femoral head and neurovascular injury, illustrate the importance of accurate diagnosis and appropriate treatment. CONCLUSIONS In conclusion, ipsilateral femoral shaft fractures combined with hip dislocations represent a rare and challenging orthopedic emergency. Timely diagnosis, careful assessment, and consideration of both closed and open reduction techniques are essential in managing these complex injuries.
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Brinkemper A, Lülsdorff RH, Lotzien S, Kruppa C, Schildhauer TA, Cibura C. Ilizarov fixator as salvage procedure after frustrating arthrodesis using intramedullary nailing - is there a chance of consolidation? Arch Orthop Trauma Surg 2024; 144:5031-5038. [PMID: 39361060 PMCID: PMC11582093 DOI: 10.1007/s00402-024-05602-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Accepted: 09/24/2024] [Indexed: 11/22/2024]
Abstract
INTRODUCTION Arthrodesis of the tibiotalar and subtalar joints is a salvage procedure that has been used successfully for years. Treatment options include internal procedures and external procedures. Retrograde intramedullary nailing is considered a safe procedure with a high degree of stability and comfort. Nevertheless, there are cases in which this internal arthrodesis fails and another procedure must be considered. Ilizarov fixator treatment could be a solution for those patients in whom intramedullary nailing has failed. Even if it means another surgical revision - is it possible to finally achieve consolidation with this method? MATERIALS AND METHODS In this single-center, retrospective study all documents of patients who underwent tibiotalar and subtalar joints fusion using the Ilizarov external fixator at our institution from 2003 to 2023 as secondary treatment after frustrated first arthrodesis using an intramedullary nail were reviewed. Nineteen patients (17 men and 2 women), with an average age of 55.7 (standard deviation (SD) 8.7, range 34-75) years were included. RESULTS On average, 1.7 (SD 1.3, range 1-6) arthrodesis attempt were performed before final Ilizarov fixator arthrodesis. The average time spent in the Ilizarov fixator was 19 (SD 4, range 14-29) weeks. In seven cases (36.8%), both the tibiotalar and subtalar joints received bony consolidation in the end. CONCLUSION If patients have undergone fusion of the tibiotalar and subtalar joints with a retrograde nail and this fails, it is difficult to achieve complete consolidation in the further course. A further attempt at arthrodesis using an Ilizarov fixator is possible, but the overall results are also poor. This procedure must therefore be seen as a last resort before amputation.
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Lu K, Wu ZQ, Qian RX, Gao YJ. The efficacy of suprapatellar, parapatellar and infrapatellar intramedullary nailing in the treatment of tibial fractures: a systematic review and meta-analysis. Arch Orthop Trauma Surg 2024; 144:4917-4927. [PMID: 39325161 DOI: 10.1007/s00402-024-05584-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Accepted: 09/14/2024] [Indexed: 09/27/2024]
Abstract
BACKGROUND Tibial fractures are common and challenging orthopedic injuries that are commonly treated with intramedullary nailing techniques via suprapatellar (SP), parapatellar (PP), and infrapatellar (IP) approaches. This study aimed to provide a comprehensive comparative analysis of the efficacy of different treatment approaches based on clinical outcomes. METHODS We conducted a detailed search in PubMed, Cochrane Library, Embase, and Web of Science for clinical studies comparing suprapatellar, parapatellar, and infrapatellar approaches in intramedullary nailing of tibial fractures. Inclusion criteria included randomized controlled trials and retrospective cohort studies involving patients aged 18 and older, comparing outcomes of these surgical techniques. Exclusion criteria included studies with insufficient data, non-English publications, and those focusing on non-tibial fractures. RESULTS A total of 15 studies involving 1396 patients were included in meta-analysis. Pooled results indicated that, compared to IP nailing, the SP approach significantly reduced fluoroscopy time (MD = - 35.63, 95% CI - 39.37 to - 31.89, p < 0.001), operative time (MD = - 10.72, 95% CI - 17.30 to - 4.15, p = 0.001), pain scores (SMD = - 1.49, 95% CI - 2.36 to - 0.62, p < 0.001), and improved Lysholm scores (MD = 5.74, 95% CI 3.29 to 8.19, p < 0.001) and malalignment rate (RR = 0.24, 95% CI 0.08 to 0.68, p = 0.008). Quality of life assessments also indicated higher physical component scores for the SP group (MD = 6.68, 95% CI 5.19 to 8.17, p < 0.001). CONCLUSION The SP approach provides significant intraoperative and postoperative benefits, reducing surgery time and improving patient outcomes in pain management and knee joint function. These findings support the SP approach as a preferred option for surgical treatment of tibial fractures.
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Kwas K, Mostowy M, Szatanik K, Małecki K. Elastic stable intramedullary nailing in paediatric diaphyseal forearm fractures - a retrospective analysis of 201 cases. BMC Musculoskelet Disord 2024; 25:855. [PMID: 39465363 PMCID: PMC11514840 DOI: 10.1186/s12891-024-07959-0] [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: 07/14/2024] [Accepted: 10/14/2024] [Indexed: 10/29/2024] Open
Abstract
BACKGROUND Forearm shaft fractures are common injuries, often caused by falling from a fully-upright position or falling off a bike. They can be treated nonoperatively or surgically with intramedullary nailing or plates. The method of choice for treating pediatric forearm shaft fractures is the application of elastic stable intramedullary nailing (ESIN)|. The aim of the study was to evaluate ESIN in pediatric patients with forearm shaft fractures based on radiological images, and determine the etiology and complication rate associated with the injury. METHODS The study included 201 patients, 30.5% female 69.5% male, aged 1 to 17 years (mean 9.1 years; SD = 3.2), all had been diagnosed with a fracture of the forearm shaft and had been treated surgically with ESIN. In addition, all possessed a complete set of X-ray images and had attended a minimum six-month follow-up examination of the forearm. Axial alignment was evaluated retrospectively in the anatomical (AP) and lateral (LAT) positions. In total, 402 radiographs were examined. Of the injuries, 68% occurred during sports activity and 75% involved both the radius and the ulna. RESULTS Union was observed in all cases. Mean axial alignment values in AP and LAT X-ray or both the ulna and radius were satisfactory. Axial alignment values were not influenced significantly by age, type of surgery, type of fracture or etiology. Plaster cast application (9.8% of cases) significantly influenced radius axial alignment. The complication rate was 11.4% (n = 23). Significantly more complications were observed in patients receiving open reduction internal fixation (ORIF) (p = 0.0025). CONCLUSION The ESIN technique is an effective treatment for forearm diaphyseal fractures in children, with good results regarding reduction and bone healing, indicated by x-ray.
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Galanis A, Vavourakis M, Karampitianis S, Karampinas P, Sakellariou E, Tsalimas G, Varsamos I, Kaspiris A, Vasiliadis E. Double Segmental Femoral Fracture: A Rare Injury Following High-Energy Trauma. J Med Cases 2024; 15:297-303. [PMID: 39328801 PMCID: PMC11424103 DOI: 10.14740/jmc4298] [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: 07/04/2024] [Accepted: 09/05/2024] [Indexed: 09/28/2024] Open
Abstract
Femoral fractures are indubitably common injuries that can occur either from high-energy trauma in young patients or due to fragility in the geriatric population. Femoral fractures affecting two or more regions of the femur are exceedingly infrequent injuries, ordinarily caused by high-energy trauma and are considered segmental femoral fractures. We present a rare case of a 33-year-old male patient presented to our Emergency Department with multiple femoral fractures at the subtrochanteric, diaphyseal and supracondylar femoral regions, a condition regarded as double segmental femoral fracture. After assiduous consideration of treatment options, intramedullary nailing was employed for osteosynthesis. Fracture reduction was laborious, as an entirely separated femoral fragment was present between the fracture lines. The reaming process required paramount attentiveness as the middle femoral fragment was prone to rotational displacement by the reamer. Finally, the intramedullary nail was successfully placed, and the patient was discharged without complications after 11 days of hospitalization. Currently, the patient is capable of full weight-bearing without crutches. This paper underlines the challenges that double-segmental femoral fractures' treatment can bring on to the orthopedic surgeon.
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Kim B, Lee JW, Yoon E, Lee S. Intramedullary nailing in a tibial shaft fracture distal to a total knee prosthesis with compromised soft tissue condition. Trauma Case Rep 2024; 53:101063. [PMID: 39006772 PMCID: PMC11245920 DOI: 10.1016/j.tcr.2024.101063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2024] [Indexed: 07/16/2024] Open
Abstract
Case We present a case report on the management and outcome of a periprosthetic tibial shaft fracture treated with intramedullary nailing. The patient, a 78-year-old female, presented with a history of having undergone total knee arthroplasty ten years ago due to osteoarthritis. She sustained a periprosthetic fracture of the tibial shaft with compromised soft tissues surrounding the fracture site following a motor vehicle accident. Plain radiographs revealed a displaced tibial shaft fracture with a flipped large spiral wedge fragment located distal to the total knee prosthesis. Due to the poor soft tissue condition and the risk of complications in wound healing, as well as the desire to avoid prolonged bed rest and immobilization, intramedullary nailing was chosen as the primary treatment modality. Despite the challenging circumstances, the patient achieved satisfactory healing and recovered her pre-injury ambulation status with no significant complications at the six-month follow-up. Conclusion Managing periprosthetic tibial shaft fractures in the presence of compromised soft tissues presents significant challenges for orthopedic surgeons. In this case, intramedullary nailing proved to be a suitable treatment option, minimizing soft tissue trauma and providing stable fixation to facilitate early mobilization and weight bearing.
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Mao J, Al-Jamal M, Allen D, Henry BW, Court T, Vaidya R. The lesser trochanter profile is an accurate and reliable measure of femoral rotation for intramedullary nailing. SICOT J 2024; 10:36. [PMID: 39303142 DOI: 10.1051/sicotj/2024036] [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: 07/22/2024] [Accepted: 08/10/2024] [Indexed: 09/22/2024] Open
Abstract
INTRODUCTION The lesser trochanter profile (LTP) method is an intraoperative fluoroscopic technique that can assess the femoral version and limit malrotation. The purpose of this study was to directly assess the accuracy and reliability of the LTP method, as well as determine the incidence of malrotation produced by this technique. METHODS Three groups of observers (fellowship-trained orthopedic surgeons, orthopedic residents, and medical students) utilized the LTP method to replicate pre-imaged rotation angles on a cadaveric femur bone. Recorded outcomes include rotational error and number of attempts. Accuracy and interobserver reliability were assessed by rotational error and the interclass correlation coefficient (ICC), respectively. RESULTS Accuracy was within 3° for all three groups. ICC between each group was greater than 0.99. There was no statistical difference between the accuracy of fellowship-trained surgeons, orthopedic residents, and medical students. Medical students on average required more attempts to obtain their final image compared to fellowship-trained surgeons. There was no statistical difference in the number of attempts between residents and fellowship-trained surgeons. CONCLUSION None of the LTP measurements were greater than 15°, the clinical threshold for malrotation. The average error of the observers was less than 3°, demonstrating that the LTP is an effective method of assessing the femoral version. There was no statistically significant difference between the observers, indicating that this technique is reliable and easy to use. Ultimately, the LTP method is easily reproducible for surgeons to avoid femoral malrotation.
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Tsujisaka R, Matsumura N, Kamata Y, Morioka H, Kiyota Y, Suzuki T, Iwamoto T. Humeral rotational osteotomy for malunion after intramedullary nailing in humeral shaft fracture: a case report. JSES REVIEWS, REPORTS, AND TECHNIQUES 2024; 4:520-525. [PMID: 39157224 PMCID: PMC11329056 DOI: 10.1016/j.xrrt.2024.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
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Whitaker S, Cole S, O'Neill C, Satalich J, Schmidt RC, Vanderbeck J. Short-term complication rates of open reduction and plate fixation and intramedullary nailing in the treatment of humeral shaft fractures: a propensity score matched analysis. Arch Orthop Trauma Surg 2024; 144:3361-3368. [PMID: 39123065 PMCID: PMC11417072 DOI: 10.1007/s00402-024-05491-3] [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: 11/01/2023] [Accepted: 07/28/2024] [Indexed: 08/12/2024]
Abstract
INTRODUCTION This is a retrospective cohort study designed to compare short-term postoperative complication rates between closed humeral shaft fractures treated by open reduction and internal fixation (ORIF) versus intramedullary nailing (IMN), as well as secondary independent risk factors for adverse outcomes. MATERIALS AND METHODS The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was queried using CPT codes to identify patients that underwent an open reduction and plate fixation or intramedullary nailing procedure for a closed humeral shaft fracture from 2010 to 2021. Cohorts were matched using propensity scores to account for demographic differences and rates of complications were compared between the two groups. RESULTS From the database, a total of 4,222 patients were identified who met inclusion criteria, with 3,326 and 896 undergoing ORIF and IMN respectively. After propensity score matching, 866 of the nearest-neighbor matches were included in each cohort for a total of 1,732 patients in the final analysis. The rate of any adverse event (AAE) was significantly higher in the ORIF cohort (16.3%) than the IMN cohort (12.1%, p = 0.01). The ORIF group had higher rates of postoperative transfusion (p = 0.002), return to OR (p = 0.005), and surgical site infection (SSI, p = 0.03). After multivariate analysis, ASA class 4, increasing age, increasing operative time, and history of bleeding disorder were found to increase the risk of AAE in both ORIF and IMN patients. CONCLUSIONS While prior studies have claimed higher complication rates in IMN patients, this study found a significantly higher short-term risk of AAE in ORIF patients when compared in matched cohorts. However, individual 30-day complication rates do not differ significantly between procedures, and both have been shown to be safe and effective tools in the management of humeral shaft fractures.
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Henssler L, Pfeifer C, Riedl M, Schneider T, Kobeck M, Alt V, Berner A, Kerschbaum M, Klute L. Intramedullary nailing of proximal humerus fractures does not achieve superior functional results to non-operative treatment in the long term. Arch Orthop Trauma Surg 2024; 144:3449-3460. [PMID: 39105845 PMCID: PMC11417063 DOI: 10.1007/s00402-024-05421-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 06/25/2024] [Indexed: 08/07/2024]
Abstract
INTRODUCTION Non-operative treatment (NOT) of proximal humerus fractures (PHF) has regained significance due to recent evidence. Additionally, positive outcomes of plate osteosynthesis and fracture arthroplasty prompt a reassessment of the role of intramedullary nailing (IMN). While favorable short and medium-term results have been documented following IMN, little is known regarding functional outcomes and quality of life in the long-term. METHODS Data from 180 patients with dislocated PHF of Neer types III, IV and V, treated at our level-I trauma center between 2004 and 2014 using IMN or NOT therapy, were scanned. Patients were re-evaluated after a minimum of 5 years to assess functional outcomes (age- and sex-adapted Constant Score, QuickDASH), quality of life (SF12), and complications or reoperations. RESULTS Out of the initially identified 180 patients, 51 were unavailable for follow-up (FU) and 71 had deceased during the FU period. Functional outcomes and quality of life was, therefore, assessed in 58 patients (30 IMN, 28 NOT) with an average age at injury of 68 years after a mean FU time of 10.3 ± 3.4 years. Epidemiological patient characteristics did not exhibit significant differences between the two groups (p > .05). The functional outcome assessed by age- and sex-adapted Constant Score (NOT: 74 ± 28; IMN: 68 ± 24; p = .438), QuickDASH (NOT: 25 ± 27; IMN: 31 ± 23; p = .374) or quality of life using the SF12 (p > .05) revealed no significant disparities in long-term outcomes between the treatment groups. 10 of 30 patients in the IMN group underwent surgical revision to address complications, exceeding mere implant removal. Conversely, no patient in the NOT group underwent a revision surgery during the FU period. CONCLUSIONS In the long-term, functional and quality of life-related outcomes of IMN did not diverge significantly from those of NOT, while causing a higher incidence of follow-up interventions.
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Subramanian A, Adejuyigbe B, Niknam K, Gomez-Alvarado F, Morshed S, Shearer D. Retrospective cohort study analyzing outcomes of the SIGN Fin Nail in adult femoral fractures using the retrograde approach. J Orthop 2024; 54:103-107. [PMID: 38560590 PMCID: PMC10978453 DOI: 10.1016/j.jor.2024.03.020] [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: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose There is high burden of long bone fractures in low- and middle-income countries (LMICs). Given a limited availability of fluoroscopy in LMICs, the Surgical Implant Generation Network (SIGN) developed two types of intramedullary nails: the SIGN standard nail and the SIGN Fin Nail. A limited number of studies have analyzed healing outcomes with the SIGN Fin Nail and the current study is the largest one to date. The purpose of this study is to compare outcomes between the SIGN standard nail and SIGN Fin Nails in adult femoral shaft fractures treated with a retrograde approach. Method A retrospective cohort study of adults with femoral shaft fractures was performed using the Sign Online Surgical Database (SOSD). The primary outcome was achieving full painless weight bearing and the secondary outcomes assessed were radiographic healing and infection. A propensity-score adjustment was performed for potential confounders and effect modification due to fracture location was tested using a Mantel-Haenszel test for heterogeneity. Results Of 19,928 adults with femoral shaft fractures, 2,912 (14.7%) had the required 6-month follow-up to be included. The overall propensity score weighted relative risk between the Fin and Standard Nail for achieving painless weight-bearing was 0.99, 95% CI [0.96-1.03] and for radiographical healing was 0.99, 95%CI [0.97-1.02]. The propensity score weighted relative risk for infection was 1.30, 95% [0.85-1.97]. Use of the Fin nail was also significantly associated with shorter surgery times (p < 0.005, effect size = 24 min). Sub-group analysis based on fracture location and injury cause demonstrated no change in relative risk. Conclusion The Fin nail showed no change in relative risk in terms of achieving full painless weightbearing or radiographic healing compared to the standard nail for retrograde nailing of femoral shaft fractures in adults. The heterogeneous nature of the cohort and large sample size allow for generalizability and add to a growing base of literature supporting use of the Fin Nail for retrograde femoral nailing. However, there are limitations as we could not correct for comminution at the fracture site or measure radiographic alignment or shortening.
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Boadi PJ, Da Silva A, Mizels J, Joyce CD, Anakwenze OA, Klifto CS, Chalmers PN. Intramedullary versus locking plate fixation for proximal humerus fractures: indications and technical considerations. JSES REVIEWS, REPORTS, AND TECHNIQUES 2024; 4:615-624. [PMID: 39157214 PMCID: PMC11329022 DOI: 10.1016/j.xrrt.2024.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
Background The incidence of proximal humerus fractures (PHFs) continues to increase with an aging population, and intramedullary nailing (IMN) and locking plate fixation are two commonly employed techniques for the surgical management of PHF. However, the optimal fixation method can be a source of ongoing controversy. Some influencing factors include the extent of humeral head involvement, fracture complexity, patient age, and surgeon preference. There are many studies that provide a mix of data either when comparing the two techniques or analyzing them in isolation. The aim of this review is to further elucidate the indications and technical considerations involved specifically in IMN vs. locking plate fixation for PHF to further aid orthopedic surgeons when choosing surgical management. Methods A narrative approach was chosen for this review allowing for a comprehensive review of literature, including recent findings pertaining to the comparison of management options for PHF. A comprehensive literature search was conducted using the PubMed, Embase, and Cochrane Library databases. The inclusion criteria involved studies that discussed "proximal humerus fracture" and either "intramedullary nail" or "locking plate fixation." Results Complications such as avascular necrosis, hardware failure, additional surgical interventions, infection, fracture redisplacement, rotator cuff rupture, and nonunion did not show significant differences between the two groups. Newer generation humeral nails have minimized early complications. As both techniques undergo further refinement and utilization when specifically indicated, functional outcomes, potential complications, and postoperative pain continue to be improved. Conclusion The available evidence suggests that both intramedullary nails and locking plates can effectively restore shoulder function in the treatment of displaced proximal humeral fractures, with unclear superiority of either method. The choice of technique should be tailored to patient factors such as fracture type, age, bone quality, and functional expectations. Surgeon experience also plays a role. While certain presentations may exhibit trends that favor one fixation, no specific technique can be universally recommended. Both IMN and LP have shown comparable and satisfactory outcomes, and the final fixation method chosen should take into account the unique characteristics of each patient.
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Teixidor-Serra J, Andrés-Peiró JV, García-Sanchez Y, Selga-Marsa J, Garcia-Martínez MC, Carbonell-Rosell C, García-Albó E, Tomás-Hernández J. Outcomes and their predictors in suprapatellar nailing for tibia fractures. Multivariable analysis of 293 consecutive cases. Eur J Trauma Emerg Surg 2024; 50:1577-1584. [PMID: 38472386 DOI: 10.1007/s00068-024-02476-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 02/19/2024] [Indexed: 03/14/2024]
Abstract
PURPOSE Intramedullary nailing of tibial fractures is one of the most common procedures in orthopedic surgery. It can be technically demanding in proximal or distal fractures, which may be facilitated using semi-extended approaches. The aim of this study is to identify outcomes and their predictors using a semi-extended suprapatellar approach for tibial fracture nailing. METHODS This is a retrospective cohort of 293 patients who underwent intramedullary nail fixation of a tibial fracture through a suprapatellar approach, considering a postoperative follow-up of 1 year. Data on patient's baseline characteristics, injuries, treatments, and outcomes regarding alignment, fracture union, and complications were recorded. For multivariable analysis, hierarchical binary (logistic) regression analysis was performed. RESULTS The mean patient age was 47.7 years (SD 18.9), with 42A1 the most frequent fracture pattern (n = 98, 33.5%). Correct or anatomical alignment (≤ 5º in both planes) was achieved in 272 (92.8%) of the patients. On multivariate analysis, surgical delay ≥ 7 days (OR = 1.3, 95% CI = 1.3-8.1) and age over 50 years (OR = 3.2, 95% CI = 1.2-8.3) were found as predictors of fracture malalignment. Fracture healing was achieved in 97.6%, and reoperation rate was 6.14%. Overall complication's predictors were proximal fracture (OR = 2.8, 95% CI = 1.1-7.2), temporary external fixation (OR = 2.4, 95% CI = 1.2-4.9), and fracture malalignment (OR = 2.9, 95% CI = 1.1-7.9). CONCLUSION The suprapatellar approach is a safe and useful technique for treating tibial fractures, leading to no less than correct reduction in almost all patients and achieving a high fracture healing rate, at very low rates of complications. Pre- and postoperative predictors identified must be taken into account to improve outcomes while treating these fractures.
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Song G, Jeong Y, Nam WD, Kim KH. Teriparatide Does not Have Beneficial Effects on Bone Healing in Complete Atypical Femur Fractures. Calcif Tissue Int 2024; 115:169-173. [PMID: 38907093 DOI: 10.1007/s00223-024-01244-x] [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: 04/23/2024] [Accepted: 06/01/2024] [Indexed: 06/23/2024]
Abstract
Teriparatide is an anabolic drug sometimes administered to patients who have atypical femoral fracture (AFF). However, whether teriparatide has beneficial effects on bone healing remains uncertain. The present study aimed to analyze the association between teriparatide and bone healing in complete AFF. A total of 59 consecutive cases (58 patients) who underwent intramedullary nailing for complete AFF were categorized based on postoperative use of teriparatide into the non-teriparatide (non-TPTD, n = 34) and teriparatide groups (TPTD, n = 25). Time-to-bone union was evaluated and compared between the two groups. Additionally, multiple regression analysis was performed to evaluate factors affecting time-to-bone union. All participants were women, with a mean age of 77.6 years (range: 62-92). No significant difference in time-to-bone union was found between the non-TPTD and TPTD groups (5.5 months vs. 5.8 months, p = 0.359). Two patients in the non-TPTD group underwent reoperation (p = 0.503) due to failure caused by inadequate fixation, and both achieved bone healing after additional fixation with blocking screws. Multiple regression analysis revealed that the anterior gap of the fracture site postoperatively was a factor affecting time-to-bone union (p = 0.014). The beneficial effect of teriparatide on bone healing in complete AFF could not be confirmed. Additional randomized controlled trials are required. Nonetheless, appropriate techniques, including efforts to reduce the gap on the tensile side during the surgery, are important for reliable bone healing.
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Zhang MR, Zhao K, Chen HY, Guo JL. Intramedullary nailing for floating knee injury complicated by pulmonary fat embolism: A case report and literature review. Trauma Case Rep 2024; 52:101040. [PMID: 38784218 PMCID: PMC11109876 DOI: 10.1016/j.tcr.2024.101040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2024] [Indexed: 05/25/2024] Open
Abstract
A 28-year-old man involved in a serious motorcycle accident was admitted to our hospital with comminuted fractures of the ipsilateral femoral shaft and tibial shaft, as well as multiple fractures of the right lower limb, including the proximal fibula, medial malleolus, and the third and fourth distal metatarsals. In addition, the patient suffered a skin contusion and laceration of the right foot. On the first day of admission, this patient suddenly developed tachycardia, pyrexia, and tachypnoea, and was immediately transferred to the ICU for further treatment due to a CT-diagnosed pulmonary fat embolism (FE). As a symptomatic treatment, he received a prophylactic dose of low-molecular-weight heparin for 10 days, after which his condition improved. A Doppler ultrasound of the lower leg and a follow-up chest CT angiography were performed, which excluded any remaining thrombus and verified that the pulmonary FE had improved without deterioration. Closed-reduction and retrograde intramedullary nailing were performed for the femoral shaft fractures, while antegrade intramedullary nailing was performed for the tibial shaft fractures under general anaesthesia. In the three-year follow-up, the patient had recovered with good function of the right limb, without any respiratory discomfort. Both the femoral and tibial shaft fractures finally resolved without any further treatment. Ipsilateral femoral and tibial shaft fractures should undergo surgical stabilisation as early as possible to avoid pulmonary FEs. It is still controversial whether intramedullary nailing is suitable for floating knee injuries complicated by pulmonary FEs. However, if patients with pulmonary FEs require intramedullary nailing, we suggest that surgery should be performed after at least one week of anticoagulant use, when patient vital signs are stable and there is no sign of dyspnoea. In addition, patients should try to avoid reaming during the operation to prevent and decrease "second hit" for the lung.
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Hamiti Y, Abudureyimu P, Lyu G, Yusufu A, Yushan M. Management strategies for Docking Site refractures: a comparative analysis of 19 patient cases. J Orthop Surg Res 2024; 19:430. [PMID: 39054535 PMCID: PMC11270954 DOI: 10.1186/s13018-024-04938-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024] Open
Abstract
AIMS This study aimed to compare the clinical effectiveness of intramedullary nailing (IMN), percutaneous external plate fixation (PEPF), and re-applied external fixation (REF) in the treatment of refracture at the consolidated docking site following the removal of external fixation in patients with tibial defects who had previously undergone the Ilizarov bone transport technique. METHODS A retrospective review was performed on patients who received IMN, PEPF, or REF for refracture at the consolidated docking site subsequent to the removal of external fixation. A collection of data was made regarding the following parameters: age, gender, defect size, treatment methods, external fixation time (EFT), external fixation index (EFI), time of refracture (TOR) subsequent to fixation removal, and docking reunion time (DRT). Bone and functional outcomes were evaluated by the Association for the Study and Application of the Method of Ilizarov (ASAMI) scoring system and the Lower Extremity Functional Scale (LEFS) questionnaire. RESULTS The study included 14 males and 5 females with an average age of 38.1 ± 8.9 years (range, 26 to 55 years). Etiologies included post-traumatic osteomyelitis in 11 cases and post-traumatic bone loss in 8 cases. The median bone defect was 5.11 ± 0.87 cm (range, 3.8 to 6.8 cm). Following docking site refracture, 6 cases were treated with IMN, 8 with PEPF, and 5 with REF. All patients achieved both satisfactory bone union and functional outcomes, and there was no significant difference in preoperative baseline data or postoperative outcomes among the three groups. CONCLUSION IMN, PEPF, and REF were all demonstrated favorable postoperative bone and functional outcomes, suggesting their reliability as treatment options for managing docking site refracture following external fixation removal.
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Yanagisawa S, Uchiyama Y, Tanzawa Y, Watanabe T, Wasai S, Suzuki T, Watanabe M. Comparison of the clinical outcomes of intramedullary nailing between impending and completed pathological fractures caused by metastatic femoral tumors from solid cancers. J Orthop Sci 2024; 29:1119-1124. [PMID: 37507316 DOI: 10.1016/j.jos.2023.07.001] [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: 12/29/2022] [Revised: 05/02/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND We examined the treatment outcomes following intramedullary nailing in patients with metastatic femoral tumors, excluding those from hematological malignancies. METHODS We retrospectively evaluated treatment outcomes following intramedullary nailing between patients who underwent preventative surgery compared with those who had surgery following pathological fracture. Patients who underwent preventative surgery (Mirels' score ≥8) were allocated to the impending fracture group (n = 11) and those who underwent surgery after pathological fracture were allocated to the completed fracture group (n = 20). RESULTS Duration of surgery was significantly shorter in the impending fracture group than in the completed fracture group. Median blood loss was significantly less, and the median duration of hospital stay was significantly shorter in the impending fracture group than in the completed fracture group. Among patients who died following surgery, the median postoperative survival duration was significantly longer in the impending fracture group than in the completed fracture group. Significantly more patients regained walking function in the impending fracture group than in the completed fracture group. Regarding complications, infection occurred in one patient in the completed fracture group. No implant damage was observed in either group. CONCLUSIONS Patients with metastatic femoral tumors who underwent intramedullary nailing in the impending fracture group had better postoperative survival and gait function, less blood loss, and shorter durations of surgery and hospital stay than those in the completed fracture group. These findings indicate the importance of early diagnosis and treatment and value of treatment prior to fracture occurrence.
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Levasseur J, Bordure P, Moui Y, David G, Rony L. Does double distal locking reduce non-union rates in intramedullary nailing for humeral shaft fracture? Orthop Traumatol Surg Res 2024:103913. [PMID: 38848890 DOI: 10.1016/j.otsr.2024.103913] [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: 05/17/2023] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 06/09/2024]
Abstract
INTRODUCTION Intramedullary nailing is one of the surgical treatments for humeral shaft fracture. Non-union is a common complication, with rates of 10-20%. The objective of this study was to compare non-union in humeral shaft fractures treated by intramedullary nailing with double distal locking, single distal locking or no locking. HYPOTHESIS Nailing with double distal locking decreases non-union rates compared to single or no locking. MATERIAL AND METHODS This single-center retrospective comparative study included 87 patients with closed humeral shaft fracture without neurologic deficit treated by anterograde intramedullary nailing: group 1 (double locking): 15 fractures; group 2 (single locking): 63 fractures; group 3 (no locking): 9 fractures. Non-union was defined as absence of radiographic callus at 6 months without clinical pain. The primary endpoint was non-union rate per group. The secondary endpoints were Constant score at 6 months, and postoperative use of non-steroidal anti-inflammatory drugs (NSAIDs). RESULTS There were no significant differences in non-union rate: 20.0% in group 1, 20.3% in group 2, and 0% in group 3 (p=0.32). Constant score at 6 months was significantly different between the 3 groups (p=0.01). Group 2 used more NSAIDs than the other groups (39.1% vs. 20.0% in group 1 and 33.3% in group 3; p=0.37). DISCUSSION Non-union rates were similar regardless of distal locking for closed humeral shaft fractures without neurologic deficit treated by intramedullary nailing. Nevertheless, patients in the double locking group had higher Constant scores at 6 months, probably related to greater stability of fixation, allowing more efficient rehabilitation. LEVEL OF EVIDENCE III; retrospective comparative study.
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Schippers P, Engels R, Benning D, Fischer S, Wunderlich F, Afghanyar Y, Arand C, Nienhaus M, Drees P, Gercek E, Küchle R. Functional outcomes after intramedullary nailing (C-Nail®) of severe calcaneal fractures with mean follow-up of 36 months. Eur J Trauma Emerg Surg 2024; 50:1111-1118. [PMID: 38226990 PMCID: PMC11249407 DOI: 10.1007/s00068-023-02433-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/28/2023] [Indexed: 01/17/2024]
Abstract
PURPOSE Calcaneal fractures (CFs) are rare but potentially debilitating injuries. Apart from the open, far lateral or sinus tarsi approach, operative treatment can be performed minimally invasive and percutaneously with intramedullary nailing. In this study, we sought to investigate the functional outcome of severe CFs treated with the C-Nail® implant. METHODS Twenty-two CFs (9 × Sanders III and 8 × Sanders IV), operated between 2016 and 2019, were followed up with a mean duration of 36 (± 11) months. The AOFAS score, pre- and postoperative Böhler angles, wound healing disorders, and patient-reported outcome measures (PROMs) like pain levels and return to work/sport levels were assessed. RESULTS The mean AOFAS score was 72.0 (± 9.8). Four patients sustained wound healing disorders, yet no implant-associated surgical revision was required. Fifty percent of patients were pain-free within 1 year. Within 1 year, about 50% of the patients could return to sports, and about 80% of the patients could return to work. PROMs and functional results align with those from other implants reported in the literature. CONCLUSION Intramedullary nailing of severe CFs with the C-Nail® implant can be considered a safe treatment alternative that yields acceptable results at mid-terms.
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Yoon YC, Kim JW, Kim TK, Oh CW, Park KH, Lee JH. Comparative biomechanical analysis of reconstruction and cephalomedullary nails in the treatment of osteoporotic subtrochanteric fractures. Injury 2024; 55:111512. [PMID: 38537396 DOI: 10.1016/j.injury.2024.111512] [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: 01/21/2024] [Revised: 03/05/2024] [Accepted: 03/18/2024] [Indexed: 05/24/2024]
Abstract
INTRODUCTION This study aimed to compare the biomechanical properties of two types of intramedullary nails - reconstruction nails (RCN) and cephalomedullary nails (CMN) - each with different proximal fixations, in a model of an osteoporotic subtrochanteric femoral fracture. This study focused on assessing stiffness and load to failure of RCN and CMN nails to provide insight into their clinical applications in osteoporotic fracture treatments. MATERIALS AND METHODS Ten synthetic osteoporotic femoral models were used to generate a comminuted subtrochanteric fracture model. Five femurs were fixed using an RCN, and the remaining five were fixed using a CMN. The constructs were subjected to axial compression to measure their structural stiffness, load to failure, and failure modes. RESULTS The CMN group demonstrated a slightly higher load to failure (mean, 2250 N) than the RCN group (mean, 2100 N), which was statistically significant (p = 0.008). However, the stiffness in both groups was statistically similar (RCN, 250 N/mm; CMN, 255 N/mm; p = 0.69). Both groups showed a load to failure exceeding 1500 N, a typically exerted load on the femoral head by a 75 kg individual. The failure patterns differed, with CMN failures starting at the nail insertion area and RCN failures starting at the reconstruction screw area. CONCLUSION The RCN offers stiffness comparable to that of the CMN; although its load to failure is slightly lower than that of the CMN, it still exceeds the physiological tolerance limit. These findings suggest that the RCN is a viable alternative for treating osteoporotic subtrochanteric fractures.
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