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According to the United Nations, around 8,400 people have been injured and over 5,800 killed on the Ukrainian side in the Ukraine war, which has been going on for over 14 months. Extensive humanitarian aid operations were carried out to support Ukraine, so that war-wounded people from Ukraine were also cared for in Germany. In a retrospective cohort study, 10 patients were examined who were treated in the department between February 24th 2022 and February 24th 2023, using the cloverleaf system from Ukraine.The average duration of inpatient treatment was 53.10 days. The average ISS was 23.7. The patients were operated on an average of 3.3 times in our institution. All patients received consultative psychological care. All patients were initially put into protective isolation until the results of a corona test and microbiological swabs were available. After preliminary protective isolation, further isolation had to be carried out in 5 cases due to germs requiring isolation. Eight patients were released to state accommodation. Three patients were transferred back to Ukraine at their own request.The treatment of war-injured patients from Ukraine represents a particular challenge. It absolutely requires an interdisciplinary treatment concept that, in addition to special trauma surgery and orthopaedic expertise, also requires plastic-reconstructive, microbiological and, last but not least, psychological care. Due to the high rate of infections requiring isolation, long, costly therapy with multiple revision operations is often necessary., Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Background: Percutaneous screw fixation for pelvic fractures has become a minimally invasive alternative to an open operation. The complex anatomy of the pelvis renders this procedure challenging. The objective of this study was to assess standardized angles and dimensions of safety zones within a 3 D computed tomography model for optimal supra-acetabular screw placement., Methods: Computed tomography scans of 107 patients that suffered major trauma without showing any bone injury of the pelvis were collected. Using a software-based analysis, raw computed tomography data were transformed into 3 D models to set standardized landmarks and determine the possible insertion corridor., Results: Screws not exceeding a length of 97 mm in females and 106.4 mm in males were, in 95% of the evaluated cases, insertable without cortical bone penetration. The safety zone was 6.6 mm for females and 7.9 mm for males. Screws not exceeding these diameters were safely insertable in 95% of the cases. For the midsagittal plane, the angle was 36.4 ± 5.1 on the left and 34.7 ± 2.9 on the right (p = 0.008). For the anterior pelvic plane, the angle was 31.3 ± 4.5° on the left and 34.0 ± 4.8° on the right (p = 0.008)., Conclusions: Percutaneous fixation using supra-acetabular screws is a promising method to treat simple supra-acetabular fractures. These results may improve its safe utilization and could facilitate its broader clinical application., Competing Interests: The authors declare that they have no conflict of interest., (Thieme. All rights reserved.)

Proximal femoral fractures are frequent and complex injuries requiring prompt and targeted care. Numerous treatment strategies have been described, some of which have been assessed and clinically implemented clinically. The aim of surgical is always the restoration of a pain-free and stable extremity. Mostly elderly patients are affected and treatment is associated with high postoperative complications and mortality rates. With increasing numbers of patients, the topic is of great medical and economic relevance. In this work, the choice of implants for the osteosynthesis of proximal femoral fractures - as depending on the fracture type - will be examined, as based on a review of current literature. Standard care includes cannulated screws, sliding hips screws and cephalomedullary nails. In addition, the influence of implant positioning, fracture reduction and additional measures such as cement augmentation are evaluated and discussed. Careful fracture reduction and the quality of implant positioning are paramount in order to avoid complications., Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Background: Since Alexandra Elbanyan founded Sci-Hub in 2011, the website has been used by a growing number of researchers worldwide. Sci-Hub is a so-called shadow library or guerrilla open access format bypassing publishers' paywalls, giving everyone free access to scientific papers. Until today, there have been no publications about usage by orthopaedic and trauma surgeons of Sci-Hub or other "pirate sites" and how it may influence their work., Materials and Methods: Orthopaedic and trauma surgeons of four university hospitals in Germany and Europe were consulted using a standardised questionnaire containing multiple items about the use and evaluation of Sci-Hub. In addition, the Medline and Cochrane databases were screened for all studies related to Sci-Hub. Two reviewers independently reviewed all articles and the references of these articles., Results: Of all orthopaedic surgeons consulted, 69% knew of Sci-Hub and 66.7% used it on a regular basis. Of the younger participants (< 45 years old), 77% knew the webpage, while only 25% of older participants (> 45 years old) knew the webpage. Ninety percent found the quality of their citation and research had been enhanced since using Sci-Hub. On a scale of 1 to 10, user-friendliness was rated with a mean rating of 7.58 (95% CI: 7.262-7.891). Ethical or legal concerns among users seem mixed. On a scale of 1 (no concerns) to 5 (many concerns), the mean score was 2.39 (95% CI: 2.154-2.615). Of doctors using Sci-Hub, 89% would recommend it to other colleagues., Conclusion: The quality and number of articles in Sci-Hub is outstanding, and the rate of young researchers using the website is high. The most important shift in literature research for decades is a phenomenon mostly used by young researchers and is not the subject of current research itself. Sci-Hub may have already changed how orthopaedic research works., Competing Interests: The authors declare that they have no conflict of interest., (Thieme. All rights reserved.)

Introduction: When consulting a specialist in orthopaedics and trauma surgery, personal assessment and manual clinical examination by the doctor on site are essential. Nevertheless, implementation of video consultation hours has been made legally easier in Germany. The present pilot study examines the possibility of video-based assessment of the urgency of treatment in outpatient orthopaedic and trauma patients., Materials and Methods: Within an ex ante study design, 40 patients with an orthopaedic clinical picture for trauma surgery with elective, urgent or emergency indication were selected from consultation hours. A short questionnaire was filled in based on the information provided and a medical colleague simulated a movement sequence based on the patient information. After modification to the "red flags" and "yellow flags" established in spinal orthopaedics, nine short questions were recorded, which inquire about the urgency of a medical consultation. The video-based movement sequence is based on a 60 s long instruction video in which motor tests and movement sequences are demonstrated: Cervical spine movement in all levels, elevation of the upper extremity, test of the finger-floor distance when "bending forward over-bending", possibility of crouching from standing and getting up again, standing on heels and toes., Results: In 91.1% (n = 328) of the cases, the diagnosis was associated with the same joint or the same pathological entity. In 37.5% (n = 135) of the cases an emergency indication was seen, in 10.8% (n = 39) of the cases an urgent indication and in 51.6% (n = 186) of the cases it was seen to offer an elective indication. 12.5% (n = 45) of the cases were evaluated as "false positives" with regard to an emergency or urgent presentation. This means that the test persons were classified as "emergency" or "urgent", although there was no preventable dangerous course or medical emergency. 18 cases (5%) were evaluated as "false negative"., Discussion: The screening questionnaire presented and the short video assessment are technically feasible and practicable method for the initial evaluation in video-based online medical consultation. In addition, the questionnaire presented in combination with the short video assessment was suitable as an instrument for assessing the urgency of the consultation and selecting preventable dangerous processes and acute emergencies., Conclusion: The questionnaire, in combination with the short video assessment, is a suitable method for the social distancing requirements during limited accessibility of the medical system. Nevertheless, a false negative rate of 5% is too high to implement the questionnaire presented into daily clinics without further optimisation., Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Objective: In the course of the corona pandemic, resource conservation and the protection of further infections have made it necessary to break new ground in the organisation of orthopaedic and trauma surgery consultations. One solution is consistent digitisation and the offer of video consultation hours. In this study, non-contact examination of patients with shoulder disorders is described and critically examined., Methods: Thirty patients who presented with pathologies of the shoulder joint in a university outpatient clinic were subjected to a physical examination in a conventional and contactless manner. The data obtained on mobility, function and provocation test of both examinations were compared to draw conclusions about the virtual feasibility., Results: 46% of the patients suffered from a traumatic shoulder lesion, and 54% showed degenerative lesions. The assessment of mobility showed a high correlation of 70 - 90% between the two examinations. Common tests to evaluate the supraspinatus, infraspinatus, subscapularis and the long head of the biceps could be adequately performed in a contactless version by more than three quarters of the patients, but with low-to-moderate performance values., Conclusion: Contact-less examination is particularly disadvantageous when evaluating stability criteria. For the medical history and functional test, there were no significant differences between the classic consultation and contactless consultation. Although virtual consultation is a widespread and valuable addition in pandemic times, it cannot replace a safe assessment and indication by personal examination., Competing Interests: The authors declare that they have no conflict of interest./Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Proximal femoral osteotomies are common surgical interventions to treat hip deformities in pediatric orthopedics. The aim of proximal femoral osteotomies is to optimise hip containment by using varus or valgus osteotomy, flexion or extension osteotomy with shortening, lengthening or derotation of the femoral neck. Furthermore improved muscular dysbalance by enhancing the femoral offset, extension of the range of motion and pain reduction are important surgical intentions. In the long term, a proximal femoral osteotomy is meant to minimize the probability of an early osteoarthritis of the hip. In the current literature many different types of proximal femoral osteotomies are described. They can be divided concerning their anatomical localization into subcapital, base of the femoral neck, intertrochanteric and subtrochanteric osteotomies. A profound knowledge about the deformity and the anatomical situation is essential to choose the appropriate osteotomy. The aim of this review is to show the different ways of proximal femoral osteotomies and their indications after having done a selective literature research. Furthermore over the last years the osteosynthesis materials have changed from blade plates (non-locking) to locking compression plates which allow an early re-mobilization without hip spica casts., Competing Interests: The authors declare that they have no conflict of interest./Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Introduction: During the current COVID-19 pandemic video consultations are increasingly common in order to minimize the risk of infection for staff and patients. The aim of this study was to evaluate the feasibility of a spine examination via video., Methods: A total of 43 patients were recruited. Each participant underwent a video-based (VB) and a conventional face-to-face (FTF) spine examination. Pain intensity, active range of motion, inspection, a neurophysiologic basic exam and provocations tests were evaluated using video-based and face-to-face methods., Results: The intra-rater reliability (IRR) was measured between both examinations. Good to very good IRR values were obtained in inspection (Kappa between 0,752 und 0,944), active range of motion and basic neurophysiological examination (Kappa between 0,659 und 0,969). Only moderate matches were found in specific provocation tests (Kappa between 0,407 und 0,938). A video-based spine examination is a reliable tool for measuring pain intensity, active range of motion and a basic neurophysiologic exam., Conclusion: A basic spine examination during a video consultation is possible. A good agreement of the test results between video-based and face-to-face examination could be found., Competing Interests: The authors declare that they have no conflict of interest./Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

Background: Olecranon fractures are common injuries that can occur in patients of any age. To assess the postoperative outcome, multiple scoring systems like the DASH, MEPS und Morrey Score have been described. The goal of this paper is to compare the subjective elbow value (SEV) to these commonly used scoring systems. We hypothesized that the SEV would have a high correlation and practicability for the evaluation of elbow function after isolated olecranon injury., Patients and Methods: Clinical data of 40 patients were collected and retrospectively analysed. All patients suffered an isolated olecranon fracture and were surgically treated by tension band wiring or plate fixation. In the follow-up examinations the Mayo Score, DASH Score, Morrey Score and SEV were measured for correlation purposes., Results: The mean follow-up time was 70.5 ± 45.6 months. The median DASH Score was 9.9 (4.1 - 20.4) and 100 (85 - 100) for the MEPS. The median Morrey Score was 98 (92 - 100). The median SEV was 90% (80 - 95%). The Pearson correlation between the DASH and SEV was -0.85 and 0.80 between the MEPS and the SEV., Conclusions: The SEV shows a high correlation to the most commonly used scoring systems for outcome evaluation after elbow injury. It is easy to use and can be seen as a valuable tool to assess patients after olecranon fractures., Competing Interests: The authors declare that they have no conflict of interest./Die Autoren geben an, dass kein Interessenkonflikt besteht., (Georg Thieme Verlag KG Stuttgart · New York.)

Background: The use of Ceramic-on-Ceramic (CoC) bearings in primary total hip arthroplasty (THA) is increasing and has been intensively analysed. This bearing plays a particularly relevant role in young, active patients and shows advantages over other bearings in biocompatibility, wear rate and lubrication properties. On the contrary, CoC bearings in revision THA are seldom used and scarcely analysed. The aim of this study is to systematically review the available literature on CoC bearings in revision THA., Methods: A systematic research in the English literature was performed to identify all studies reporting results of THA revisions using ceramic-on-ceramic bearing. The initial search strategy revealed 555 articles for consideration. On the basis of eligibility criteria, 26 studies were included in this review., Results: Twenty-six studies, accounting for 1846 procedures, were eligible and included in the review. No studies of Level I were identified. Eighteen studies reported on revisions of CoC implants for various reasons, performed either with CoC or different bearings. In 111 patients a CoC bearing was used for the revision. Six studies consistently reported outcome measures for CoC bearing THA revisions, so that a quantitative synthesis of the data was possible. The range of follow-up across the six studies varied between 2.1 and 19 years, with a cumulative avearage follow-up of 9.3 years. A good functional result was documented, with a cumulative weighted mean for postoperative Harris Hip Score (HHS) of 87 points. The rate of dislocation in this group was 3.45% and the risk of fracture of an alumina ceramic head was 0.35% (1 study). Squeaking was reported as complication of CoC bearing THA revisions in three studies, with a calculated incidence of 0.52%., Conclusion: Modern CoC bearings show advantages in preclinical and retrospective studies over other bearings also in revision cases and are therefore to be considered a promising alternative for this kind of operation. Reasonable indications for CoC bearing in revision THA are revisions for aseptic loosening or recurrent dislocation in young patients, fractures of ceramic components, large acetabular defects or in patients that are allergic to bone cement components. Nevertheless, prospectively designed or randomized studies are lacking and needed to confirm CoC as optimal solution for revision THA cases., Competing Interests: Robert Streicher: Dr. Streicher GmbH; CH-8835 Feusisberg. Consultant and managing director. International Society for Thechnology in Arthroplasty (ISTA), Secretary General President. Medical Equipment Insights, Editorial Board. ISRN Orthopedics, Editorial Board.All the other authors have no conflict of interest. Robert Streicher: Dr. Streicher GmbH; CH-8835 Feusisberg. Consultancy Inhaber und Geschäftsführer. International Society for Thechnology in Arthroplasty (ISTA), Secretary Genral President. Medical Equipment Insights, Editorial Board. ISRN Orthopedics, Editorial Board.Die übrigen Autoren geben an, dass kein Interessenkonflikt besteht., (Georg Thieme Verlag KG Stuttgart · New York.)