InjuryPub Date : 2024-07-31DOI: 10.1016/j.injury.2024.111758
Gregory R Stettler, Rachel Warner, Bethany Bouldin, Matthew D Painter, Martin D Avery, James J Hoth, J Wayne Meredith, Preston R Miller, Andrew M Nunn
{"title":"Whole blood for old blood: Use of whole blood for resuscitation in older trauma patients.","authors":"Gregory R Stettler, Rachel Warner, Bethany Bouldin, Matthew D Painter, Martin D Avery, James J Hoth, J Wayne Meredith, Preston R Miller, Andrew M Nunn","doi":"10.1016/j.injury.2024.111758","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111758","url":null,"abstract":"<p><strong>Introduction: </strong>Older patients are expected to comprise 40 % of trauma admissions in the next 30 years. The use of whole blood (WB) has shown promise in improving mortality while lowering the utilization of blood products. However, the use of WB in older trauma patients has not been examined. The objective of our study is to determine the safety and efficacy of a WB first transfusion strategy in injured older patients.</p><p><strong>Methods: </strong>Older trauma patients, defined as age ≥55 years old, were reviewed from March 2016-November 2021. Patients that received a WB first resuscitation strategy were compared to those that received a ratio based component strategy. Demographics as well as complications rates, blood product transfusion volumes, and mortality were evaluated. Univariate and multivariable analysis was used to determine independent predictors of mortality.</p><p><strong>Results: </strong>There were 388 older trauma patients that received any blood products during the study period. A majority of patients received a WB first resuscitation strategy (83 %). Compared to patients that received component therapy, patients that received WB first were more likely female, less likely to have a penetrating mechanism, and had a slightly lower injury severity score. The-30 day mortality rate was comparable (WB 36% vs component 37 %, p = 0.914). While rates of AKI were slightly higher in those that received WB, this did not result in increased rates of renal replacement therapy (3 % vs 2 %, p = 1). Further, compared to patients that received components, patients that were resuscitated with a WB first strategy significantly utilized lower median volumes of platelets (0 mL vs 197 mL, p < 0.001), median volumes of plasma (0 mL vs 1253 mL, p < 0.001, and median total volume of blood products (1000 mL vs 2859 mL, p < 0.001).</p><p><strong>Conclusion: </strong>The use of WB in the older trauma patient appears safe, with mortality and complication rates comparable to component therapy. Blood product utilization is significantly less in those that are resuscitated with WB first.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2024-07-20DOI: 10.1016/j.injury.2024.111731
Jack H Scaife, Hilary A Hewes, Stephanie E Iantorno, Christopher E Clinker, Stephen J Fenton, David E Skarda, Zachary J Kastenberg, Robert A Swendiman, Katie W Russell
{"title":"Optimizing patient selection for ECMO after pediatric hypothermic cardiac arrest.","authors":"Jack H Scaife, Hilary A Hewes, Stephanie E Iantorno, Christopher E Clinker, Stephen J Fenton, David E Skarda, Zachary J Kastenberg, Robert A Swendiman, Katie W Russell","doi":"10.1016/j.injury.2024.111731","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111731","url":null,"abstract":"<p><strong>Background: </strong>In 2004, our level 1 regional pediatric trauma center created a protocol to activate ECMO for children with suspected hypothermic cardiac arrest based on inclusion criteria: serum potassium ≤9, submersion <90 min, and core body temperature <30 °C. In 2017, Pasquier et al. developed a model to help predict the survival of adults after hypothermic cardiac arrest (HOPE score) that has not been validated in children. We sought to apply this score to our pediatric patient population to determine if it can optimize our patient selection.</p><p><strong>Methods: </strong>This was a retrospective review of all patients cannulated onto VA ECMO for hypothermic cardiac arrest between 2004 and 2022. We used abstracted data points to calculate the HOPE score for our patient population, both with and without presumed asphyxia.</p><p><strong>Results: </strong>Over 19 years, 18 patients were cannulated for suspected hypothermic arrest, with three survivors (17 %). The HOPE score survival prediction ranged from 1 to 86 % with presumed asphyxia and 6-98 % without presumed asphyxia. Survivor HOPE scores ranged from 9 to 86 % with presumed asphyxia and 42-98 % without presumed asphyxia. Non-survivors' scores ranged 1-29 % with asphyxia and 6-57 % without asphyxia. A cutoff of >5 % predicted survival with asphyxia for ECMO could have decreased our cannulations by half without missing survivors.</p><p><strong>Conclusion: </strong>ECMO can be a lifesaving measure for specific children after hypothermic arrest. However, identifying the patients that will benefit from this resource-intensive intervention remains difficult. HOPE score utilization may decrease the rate of futile cannulation in children, but multi-centered research is needed in the pediatric population.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141763523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2024-07-18DOI: 10.1016/j.injury.2024.111747
Melissa O'Neill, Sheldon Cheskes, Ian Drennan, Charles Keown-Stoneman, Steve Lin, Brodie Nolan
{"title":"Injury severity bias in missing prehospital vital signs: Prevalence and implications for trauma registries.","authors":"Melissa O'Neill, Sheldon Cheskes, Ian Drennan, Charles Keown-Stoneman, Steve Lin, Brodie Nolan","doi":"10.1016/j.injury.2024.111747","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111747","url":null,"abstract":"<p><strong>Background: </strong>Vital signs are important factors in assessing injury severity and guiding trauma resuscitation, especially among severely injured patients. Despite this, physiological data are frequently missing from trauma registries. This study aimed to evaluate the extent of missing prehospital data in a hospital-based trauma registry and to assess the associations between prehospital physiological data completeness and indicators of injury severity.</p><p><strong>Methods: </strong>A retrospective review was conducted on all adult trauma patients brought directly to a level 1 trauma center in Toronto, Ontario by paramedics from January 1, 2015, to December 31, 2019. The proportion of missing data was evaluated for each variable and patterns of missingness were assessed. To investigate the associations between prehospital data completeness and injury severity factors, descriptive and unadjusted logistic regression analyses were performed.</p><p><strong>Results: </strong>A total of 3,528 patients were included. We considered prehospital data missing if any of heart rate, systolic blood pressure, respiratory rate or oxygen saturation were incomplete. Each individual variable was missing from the registry in approximately 20 % of patients, with oxygen saturation missing most frequently (n = 831; 23.6 %). Over 25 % (n = 909) of patients were missing at least one prehospital vital sign, of which 69.1 % (n = 628) were missing all four of these variables. Patients with incomplete data were more severely injured, had higher mortality, and more frequently received lifesaving interventions such as blood transfusion and intubation. Patients were most likely to have missing prehospital physiological data if they died in the trauma bay (unadjusted OR: 9.79; 95 % CI: 6.35-15.10), did not survive to discharge (unadjusted OR: 3.55; 95 % CI: 2.76-4.55), or had a prehospital GCS less than 9 (OR: 3.24; 95 % CI: 2.59-4.06).</p><p><strong>Conclusion: </strong>In this single center trauma registry, key prehospital variables were frequently missing, particularly among more severely injured patients. Patients with missing data had higher mortality, more severe injury characteristics and received more life-saving interventions in the trauma bay, suggesting an injury severity bias in prehospital vital sign missingness. To ensure the validity of research based on trauma registry data, patterns of missingness must be carefully considered to ensure missing data is appropriately addressed.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141763561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2024-07-01DOI: 10.1016/j.injury.2024.111736
Felícito García-Alvarez, Álvaro Chueca-Marco, Luis Martínez-Lostao, María Aso-Gonzalvo, R. E. Nonay, Jorge Albareda
{"title":"SERUM LEVELS OF IL-6 AND IL-10 ON ADMISSION CORRELATE WITH COMPLICATIONS IN ELDERLY PATIENTS WITH HIP FRACTURE.","authors":"Felícito García-Alvarez, Álvaro Chueca-Marco, Luis Martínez-Lostao, María Aso-Gonzalvo, R. E. Nonay, Jorge Albareda","doi":"10.1016/j.injury.2024.111736","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111736","url":null,"abstract":"","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2024-04-02DOI: 10.1016/j.injury.2024.111522
Global Prehospital Consortium, Peter G. Delaney, Simonay De Vos, Zachary J. Eisner, Jason Friesen, Marko Hingi, Usama Javed Mirza, Ramu Kharel, Jon Moussally, Nathanael Smith, Marcus Slingers, Jared Sun, Alfred Harun Thullah
{"title":"Challenges, opportunities, and priorities for tier-1 emergency medical services (EMS) development in low- and middle-income countries: A modified Delphi-based consensus study among the global prehospital consortium","authors":"Global Prehospital Consortium, Peter G. Delaney, Simonay De Vos, Zachary J. Eisner, Jason Friesen, Marko Hingi, Usama Javed Mirza, Ramu Kharel, Jon Moussally, Nathanael Smith, Marcus Slingers, Jared Sun, Alfred Harun Thullah","doi":"10.1016/j.injury.2024.111522","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111522","url":null,"abstract":"","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140598455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2024-04-01DOI: 10.1016/j.injury.2024.111534
G. Papotto, G. Milordo, S. Comitini, GC. Salvo, A. Palmeri, F. Costanzo, GF. Longo, M. Ganci
{"title":"New fracture patterns distal epiphysis femur in youth: update of current classification","authors":"G. Papotto, G. Milordo, S. Comitini, GC. Salvo, A. Palmeri, F. Costanzo, GF. Longo, M. Ganci","doi":"10.1016/j.injury.2024.111534","DOIUrl":"https://doi.org/10.1016/j.injury.2024.111534","url":null,"abstract":"","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140770509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2023-12-20DOI: 10.1016/j.injury.2023.111297
Julia Nilsson, Eva-Corina Caragounis
{"title":"Long-term outcome after surgical management of symptomatic non-union rib fractures","authors":"Julia Nilsson, Eva-Corina Caragounis","doi":"10.1016/j.injury.2023.111297","DOIUrl":"https://doi.org/10.1016/j.injury.2023.111297","url":null,"abstract":"<h3>Introduction</h3><p>Traumatic chest wall injuries are common however the incidence of non-union rib fractures is unknown. Previous studies have suggested that surgical management of symptomatic non-union rib fractures could be beneficial in selected patients, although many experience persisting pain despite surgery. The aim of this study is to investigate the long-term outcome after surgical management of symptomatic non-union rib fractures.</p><h3>Methods</h3><p>This is a cross-sectional study including adults (≥18 years) managed surgically for symptomatic non-union rib fractures with plate fixation during the period 2010–2020 at Sahlgrenska University Hospital. Patients operated for acute chest wall injury or injury due to cardiopulmonary resuscitation were excluded. Patients answered standardized questionnaires concerning remaining symptoms and satisfaction with surgery, quality of life (QoL, EQ-5D-5L) and disability (Disability Rating Index, DRI). Lung function, movement of chest wall and thoracic spine, and shoulder function (Boström index) were assessed.</p><h3>Results</h3><p>Sixteen patients, 12 men and four women, with mean age 61.6±11.1 were included in the study. The mechanism of injury was trauma in 10 patients and cough-induced injuries in five patients. Lung disease was significantly more prevalent in cough-induced injuries compared to traumatic injuries, 5 vs 1 (p=0.008). The mean follow-up time was 3.5 years. Ninety-four percent were satisfied with the surgery and reported that their symptoms had decreased, although 69% had remaining symptoms, especially pain, from the chest wall. Quality of Life was decreased with EQ-5D-5L index 0.819 (0.477–0.976) and EQ-VAS 69 (10–100). Disability Rating Index was 31.5 (1.3–76.7) with problems running, lifting heavy objects, and performing heavy work. Predicted lung function was decreased with Forced Vital Capacity (FVC) 86.2±14.2%, Forced Expiratory Volume in 1 second (FEV1) 79.1±10.7% and Peak Expiratory Flow (PEF) 89.7±14.5%. Patients with cough-induced injuries had full shoulder mobility.</p><h3>Conclusions</h3><p>Chest wall surgery for symptomatic non-union rib fractures results in decreased symptoms and patient satisfaction in most cases despite remaining symptoms, reduced lung function, chest wall movement, and QoL and persistent disability.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139030740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2023-12-01Epub Date: 2024-01-13DOI: 10.1016/j.injury.2023.111041
Beatriz Garcia-Maya, Sara Morais, Jesus Diez-Sebastian, Samuel Antuña, Raul Barco
{"title":"Drain use can be avoided in reverse shoulder arthroplasty.","authors":"Beatriz Garcia-Maya, Sara Morais, Jesus Diez-Sebastian, Samuel Antuña, Raul Barco","doi":"10.1016/j.injury.2023.111041","DOIUrl":"10.1016/j.injury.2023.111041","url":null,"abstract":"<p><strong>Background: </strong>Drains have demonstrated no clear benefits and some potentially harmful effects in hip and knee replacements. There is little evidence about the effects of its use in shoulder arthroplasty. We hypothesized that drain use would increase postoperative blood loss without reducing wound complications.</p><p><strong>Methods: </strong>We included 103 reverse shoulder arthroplasties (RSA), 71 were operated for degenerative pathology, 32 due to a fracture. All complications were recorded. Hemoglobin (Hb) and hematocrit (Htc.) level were collected and compared to postoperative data. Length of hospitalization and volume output were also noted.</p><p><strong>Results: </strong>45 patients received a closed-suction drain. Patients with coagulopathy had significant higher bleeding and were excluded (p = 0.03). Patients operated for a fracture were older (80.1y.o vs 72.1 p < 0.01) and had higher blood drop (∆Hb p = 0.01; ∆Htc p = 0.03). There were neither differences between drain and control group in ∆Hb or ∆Htc in the degenerative RSA group (1.84+/-0.89 vs 1.68+/-0.84, p = 0.36; 5.78+/-2.89 vs 5.53+/-2.87 p = 0.50) nor in the fracture RSA group (2.65+/-0.94 vs 2.65+/-1.01, p = 0.90; 7.91+/-2.99 vs. 7.09+/-4.21, p = 0.56). There were neither differences in complications (degenerative p = 0.33; fracture p = 0.21). Drain use was related to a longer hospital stay in elective surgery (2.6 vs 1.8 days; p < 0.01).</p><p><strong>Discussion: </strong>The rate of complication is similar between patients with and without drain use. Drain use after shoulder arthroplasty does not affect postoperative bleeding but increases the length of hospital stay. Drains seems to be an unnecessary intervention after RSA that may increase associated costs and can be safely abandoned.</p><p><strong>Level of evidence: </strong>Level III retrospective comparative study.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139473061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2023-12-01Epub Date: 2024-01-13DOI: 10.1016/j.injury.2023.111047
Miguel Angel Ruiz Ibán, Raquel Ruiz Díaz, Ignacio de Rus Aznar, Carlos Vaquero Comino, Jorge Diaz Heredia
{"title":"Anatomic acromioclavicular and Coracoclavicular ligament reconstruction with allograft is effective for the management of non-acute acromioclavicular dislocations.","authors":"Miguel Angel Ruiz Ibán, Raquel Ruiz Díaz, Ignacio de Rus Aznar, Carlos Vaquero Comino, Jorge Diaz Heredia","doi":"10.1016/j.injury.2023.111047","DOIUrl":"10.1016/j.injury.2023.111047","url":null,"abstract":"<p><strong>Objective: </strong>to analyze the short-term outcomes of an anatomical technique that reconstructs both the acromioclavicular and coracoclavicular ligaments with the help of a tendon allograft for the management of non-acute acromioclavicular dislocations.</p><p><strong>Methods: </strong>this is a prospective longitudinal study of a case series of subjects with symptomatic non-acute (>3 weeks) acromioclavicular dislocations surgically managed with an anatomical reconstruction of both the acromioclavicular and coracoclavicular ligaments using tibial tendon allografts. Outcomes were assessed with simple standardized radiographs and with the Constant-Murley, American Shoulder and Elbow Surgeons (ASES)-shoulder and Quick-DASH (Disabilities of the Arm, Shoulder and Hand) scales; also, the acromioclavicular joint stability and the scapulothoracic kinematics were assessed.</p><p><strong>Results: </strong>a total of 19 subjects were assessed. There were no intraoperative or early postoperative complications. After a minimum two year follow-up (mean 3.12 years, [standard deviation 1.10 years]), there were significant improvements in all three of the scales: The Constant-Murley score increased from 65.4 (13.0) preoperatively to 92.6 (11.2) at the end of follow-up (p<0.001); the Quick-DASH score improved from 21.3 (6.73) to 13.0(4.58) (p<0.001); and the ASES-shoulder score increased from 56.6 (14.6) to 91.0 (9.86) (p<0.001). The AC joint was stable in both the vertical and the horizontal plane, without residual scapulothoracic dysfunction in 18/19 subjects at the end of follow-up. Only one patient presented a poor functional outcome, with loss of reduction, instability and persistent symptoms. Another subject suffered loss of reduction, though without functional repercussions. Two subjects had asymptomatic distal clavicle osteolysis and two developed radiographic osteoarthritis and were also asymptomatic. Moderate widening of the tunnels was observed in most patients: tunnel size after surgery was 5.1 (0.3) mm versus 5.8 (1.1) mm at the end of follow-up (p = 0.001) but widening was not correlated to final function.</p><p><strong>Conclusions: </strong>the anatomical reconstruction of the acromioclavicular and coracoclavicular ligament complexes with a tendon allograft yields excellent clinical outcomes when used in subjects with symptomatic non-acute acromioclavicular dislocations. Secondary tunnel widening, distal clavicle osteolysis and osteoarthritis might be of concern but do not affect clinical outcomes.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139473050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
InjuryPub Date : 2023-12-01Epub Date: 2024-01-13DOI: 10.1016/j.injury.2023.111042
B Garcia-Maya, F Pérez-Barragans, J R Lainez Galvez, Javier Paez Gallego, A Vaquero-Picado, R Barco, S Antuña
{"title":"Percutaneous plate fixation of displaced proximal humerus fractures: Do minimally invasive techniques improve outcomes and reduce complications?","authors":"B Garcia-Maya, F Pérez-Barragans, J R Lainez Galvez, Javier Paez Gallego, A Vaquero-Picado, R Barco, S Antuña","doi":"10.1016/j.injury.2023.111042","DOIUrl":"10.1016/j.injury.2023.111042","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to analyze the outcomes and complications of minimally invasive plate osteosynthesis (MIPO) for displaced proximal humerus fractures and elucidate if the percutaneous technique reduces the rate of avascular necrosis (AVN) without jeopardizing fracture reduction.</p><p><strong>Material and methods: </strong>118 patients with a displaced proximal humerus fracture were treated with a polyaxial locking-plate through a standardized percutaneous approach. 73 % were women and mean age was 63 years (18-89) with an average follow-up of 51 months (12-256). There were 32 two-part fractures (27 %), 57 three-part fractures (48 %) and 24 four-part fractures (25 %). Shoulder function at the last follow-up, including ROM and ability to perform daily living activities, was objectively evaluated with an adjusted Constant Score (CS). Subjective patient satisfaction was rated with an Visual Analogic Scale from 0 to 10 and the degree of residual pain with a Verbal Rating Scale (VRS). Radiographic analysis at the most recent follow-up evaluated the presence of AVN, degree of residual medial calcar displacement, and the cervicodiaphiseal angle.</p><p><strong>Results: </strong>Forty patients (34 %) had a complication, 25 of them (21 %) requiring further surgery. ROM at the last follow-up was 131° of elevation (40°-180°), 38° of external rotation (SD: 17.7) and internal rotation to L3. Average adjusted Constant Score was 68 (SD: 17.76). Twenty-one patients (18 %) complained of shoulder pain (14 moderate and 7 severe) and seven were not satisfied. Radiographically, 29 patients (25 %) had varus malunion and 17 patients (14 %) showed some degree of AVN. Patients with varus malunion (CS 64.3 versus 69.8, p = 0.16) and AVN (CS 56.9 versus 70.4, p = 0.005) had lower CS. The presence of a varus malunion was directly related to the degree of initial medial calcar displacement (p = 0.001) and deficient calcar reduction at surgery (p = 0.004). AVN was statistically more prevalent when the medial calcar was inadequately reduced (p = 0.01).</p><p><strong>Conclusions: </strong>MIPO surgery for proximal humerus fractures through an anterolateral approach does not reduce the rate of mechanical complications or AVN compared with standard ORIF techniques. Moreover, percutaneous plating may preclude adequate medial calcar reduction, leading to humeral head malunion and a worse clinical outcome.</p>","PeriodicalId":94042,"journal":{"name":"Injury","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139473070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}