Local and regional flaps in scalp reconstructions: A retrospective analysis.

The study demonstrates the broad applicability of local and regional flaps for the treatment of scalp defects of varying size and etiology. We aimed to verify whether the following variables correlate with the postoperative complication rate, length of hospitalization, and postoperative inpatient course, i.e.

A novel and objective tool for determining total and shear joint contact forces after primary total hip arthroplasty.

Background And Purpose: Total hip arthroplasty, a common surgical procedure in orthopedics, is used in patients with severe hip osteoarthritis to relieve pain and to restore the function. The surgery has been shown to be effective, but patients may experience gait limitations after surgery. We used a novel and innovative tool, Computed MyoGraphy (CMG), to analyse the gait kinematics and forces acting within the musculoskeletal system after total hip arthroplasty.

Two propeller flaps in a distal lower leg with bilateral defects as a single-stage procedure: A case report.

Soft tissue defects in the lower leg often represent a therapeutic challenge. One of the treatment modalities is plastic reconstruction with a propeller flap. In our case report, we would like to present a case of a 75-year-old, multimorbid female patient who developed in the right distal lower leg, both medial and lateral, soft tissue defects after open reduction and internal fixation of a complex ankle fracture.

Evaluating femoral head collapse risk post-fixation removal: a finite element analysis.

Background: Femoral neck fractures are prevalent in orthopedic injuries, often leading to complications such as nonunion and osteonecrosis of the femoral head (ONFH). Studies indicate that after healing and removal of internal fixation devices, some patients develop ONFH, while others experience osteosclerosis around the screw holes due to prolonged fixation, increasing ONFH risk. Despite such observations, biomechanical studies on this phenomenon are limited.

Revealing the potential: radiological assessment of pedicle screw placement in the craniocervical junction and upper cervical spine.

Purpose: Instabilities of the craniocervical junction and the upper cervical spine may necessitate dorsal spinal stabilization to prevent neurological complications, deformities and pain. Among the options available, the implantation of mass or pedicle screws is considered. This study aims to assess the feasibility of pedicle screw placement based on anatomical considerations and its clinical significance.

Surgical strategy for chest wall reconstruction secondary to cardiopulmonary resuscitation versus post-traumatic.

Purpose: In mechanically cardiopulmonary resuscitated (CPR) patients, chest compressions at the level of the 3rd to 5th rib on the sternum result in reproducibly similar injury patterns: parasternal osteochondral dissociation (OCS) on both sides in combination with a sternal fracture with or without an additional serial rib fracture in the anterolateral column (ALS). This injury biomechanically impairs physiological breathing, resulting in an inverse breathing pattern. Trauma patients, on the other hand, often show a mixed pattern depending on the location of the main energy.

Retrospective MRI analysis of 418 adult shoulder joints to assess the physiological morphology of the glenoid in a low-grade osteoarthritic population.

Background: Due to the difference in size between the humeral head and the glenoid, the shoulder joint is prone to instability. Therefore, the reconstruction of the physiological joint morphology is of great importance in shoulder joint preservation and replacement surgery. The aim of this study was to describe physiological reference parameters for the morphology of the glenoid for the first time.

Unilateral Lumbo-Pelvic Fixation for Denis Type I Unilateral Sacral Fracture: A Finite Element Analysis.

Background: Unilateral sacral fractures with posterior ring instability represent a prevalent type of posterior pelvic ring fracture. While lumbo-pelvic fixation is recognized as a highly stable method, the sufficiency of unilateral lumbo-pelvic fixation (ULF) for such fractures remains under debate.

Purpose: This study aims to assess the biomechanical stability of ULF compared to traditional bilateral lumbo-pelvic fixation (BLF) and triangular osteosynthesis (TO), incorporating clinical observations, and previous biomechanical data.

Learning effectiveness of clinical anatomy and practical spine surgery skills using a new VR-based training platform.

Introduction: As medical education becomes more complex, the demand for advanced teaching and training methods has grown. Technological advancements have opened up new possibilities, particularly in the realm of virtual reality (VR) simulations for training.

Research Question: Our prospective, randomized pilot study aims to assess whether a novel VR-based 3D training platform can effectively teach the knowledge and skills needed for complex spinal surgery, specifically pedicle screw placement.

Electrospinning based biomaterials for biomimetic fabrication, bioactive protein delivery and wound regenerative repair.

Electrospinning is a remarkably straightforward and adaptable technique that can be employed to process an array of synthetic and natural materials, resulting in the production of nanoscale fibers. It has emerged as a novel technique for biomedical applications and has gained increasing popularity in the research community in recent times. In the context of tissue repair and tissue engineering, there is a growing tendency toward the integration of biomimetic scaffolds and bioactive macromolecules, particularly proteins and growth factors.

Diagnosis, treatment, and prevention of ankle sprains: Comparing free chatbot recommendations with clinical guidelines.

Background: Free chatbots powered by large language models offer lateral ankle sprains (LAS) treatment recommendations but lack scientific validation.

Methods: The chatbots-Claude, Perplexity, and ChatGPT-were evaluated by comparing their responses to a questionnaire and their treatment algorithms against current clinical guidelines. Responses were graded on accuracy, conclusiveness, supplementary information, and incompleteness, and evaluated individually and collectively, with a 60 % pass threshold.

[Transosseous lacerations in the ankylosed cervical spine].

Transosseous lacerations represent a particular type of discoligamentous injury of the cervical spine and occur in ankylosing diseases of the spine, with ankylosing spondylitis and diffuse idiopathic skeletal hyperostosis (DISH) being the primary entities. The altered biomechanics of the spine due to the underlying disease pose special challenges in the diagnostics and treatment. Even low-energy trauma can cause severe injuries of the cervical spine, which are often difficult to accurately diagnose due to the difficult assessability of the conventional projection radiography used in the primary diagnostics.

[Consideration and implementation of the elements of hospital mass casualty planning in the hospitals of the TraumaNetworks DGU® : An evaluation within the framework of the development process of the guidelines for clinical disaster medicine in Germany (LeiKliKatMeD) by the EKTC, NIS, AKUT, AUC].

Background: The protection and maintenance of hospital functionality and treatment capacity require preventative planning and preparation for a mass casualty incident with respect to the scenarios, disasters or catastrophes to be expected. The hospital alarm and operations (KAEP) or stockpiling plan should include and organize the procedures and measures in the respective clinics and hospitals. The aim of the present study was to evaluate the hospitals of the Trauma Networks of the German Society for Trauma Surgery® (TNW DGU®) with respect to the established organizational structures and contents of the KAEP.

A retrospective cohort study: Waterjet-assisted liposuction reduces inflammation but increases the risk of hypokalemia in patients with lipoedema.

Introduction: Lipoedema is a congenital fat distribution disorder. It leads to a pathological increase in adipose tissue due to a hypertrophy and hyperplasia of the adipocytes. Currently, the disease affects approximately 10% of women.

Biomechanical investigation of positive reduction in the femoral neck fracture: a finite element analysis.

Background: Gotfried positive reduction offers an alternative strategy for femoral neck fracture (FNF) when achieving anatomical reduction is challenging. However, the biomechanical consequences of positive reduction remain unclear. The purpose of this study was to investigate the biomechanical behavior of positive reduction across different Pauwels classification, providing a reference for quantifying positive reduction in clinical practice.

Change in Femoral Offset after Closed Reduction and Dynamic Hip Screw Osteosynthesis Via Lateral Approach in Patients with Medial Femoral Neck Fracture: A Retrospective Analysis.

Objective: Closed reduction and dynamic hip screw (DHS) osteosynthesis are preferred as joint-preserving therapy in case of medial femoral neck fractures (MFNFs). A change in the femoral offset (CFO) can cause gait abnormality, impingement, or greater trochanteric pain syndrome. It is unknown whether the femoral offset (FO) can be postoperatively fully restored.

[Possibilities of the utilization of trauma networks of the German Society for Trauma Surgery using digital solutions].

This paper describes the use of digital solutions to improve the care of trauma patients in Germany. The focus is on the trauma networks of the German Society for Trauma Surgery (Deutsche Gesellschaft für Unfallchirurgie, DGU). The use of digital solutions includes quality assurance through the TraumaRegister, which enables comprehensive data analysis as well as preregistration and resource utilization through programs such as the interdisciplinary proof of treatment IVENA eHealth, Rescuetrack and Rescue-Net.

MRI analysis of the physiological patellofemoral joint morphology of adult knees.

Objective: The aim of the present study was to determine physiological reference values for the morphology of the patella and to analyse these parameters according to patella position in healthy knee joints.

Material And Methods: Healthy knee joints of 409 patients (mean age, 52.3 years [± 16.

Two-screw osteosynthesis is biomechanically superior to single-screw osteosynthesis for type II odontoid fractures.

The data on the use of a one- or two-screw technique (1S, 2S) for ventral osteosynthesis of type II dens fractures are contradictory. The aim was to design an apparatus to mimic the physiological conditions and test stability with 1S, 2S, and a headless compression screw (HCS) for osteosynthesis of artificially created type II odontoid fractures. The apparatus was mounted on a Zwick materials testing machine.

[Future Developments in Trauma Care in Germany].

Trauma surgical care in Germany faces major challenges. The increasing number of cases due to demographic change, combined with reduced bed capacity, requires a rethink in many areas. In order to continue to ensure basic and standard care at a high level and across the board in the future, economic incentives must be created to maintain sufficient locations for trauma care.

[National challenges for trauma surgery in Germany due to violence and war].

Due to the war in Ukraine and the treatment of patients with war wounds in the hospitals of the TraumaNetworks of the German Society for Trauma Surgery (TraumaNetzwerke DGU®), injuries from life-threatening mission situations (LebEL), terrorism, violence and war have become a matter of daily professional life. Furthermore, the societal and global feeling of security has fundamentally changed. The much-cited term "turning point in history", the reorientation of the Armed Forces and the investigation of the resilience of the healthcare system with respect to the "fitness for war", approximate to the description of the current challenges for trauma surgery (UCH) in Germany.