Publications by authors named "Philipp Schenk"

Article Synopsis
  • Fragility fractures of the pelvis (FFP) primarily affect patients with osteoporosis and are often difficult to diagnose using conventional CT, with MRI being the gold standard for accurate detection.* -
  • This study compares the diagnostic accuracy of Spectral CT to MRI by examining patients with suspected FFP, finding that while Spectral CT has slightly lower sensitivity than MRI, it can still identify additional fractures effectively.* -
  • The results show that Spectral CT maintained good specificity and inter-rater reliability, suggesting it could be a valuable tool in uncertain cases of FFP diagnosis.*
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Article Synopsis
  • Diagnosis of abdominal injuries after blunt trauma in polytrauma patients is difficult, with a significant percentage (26.3%) showing such injuries, categorized into bowel and mesenteric injuries (BMI) or parenchymatous organ injuries (POI).
  • The study analyzed data from 2005-2017 to identify predictors for these injuries using physical exams, lab results, and imaging (CT) assessments.
  • Key predictors included pathological abdominal findings, abnormal MSCT results, elevated transaminases, and the presence of long bone fractures, with high sensitivity (94.8%) and specificity (98%) for detecting abdominal injuries through CT.
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Introduction: The management of proximal hamstring tear (PHT) is debated and consensus regarding recommended measures and individual treatment regimens is lacking. The present investigation evaluated the efficacy of a conservative management of partial and complete PHT.

Methods: The present observational study was conducted following the STROBE statement.

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  • This study explores the causes of sacral fragility fractures by analyzing the distribution of calcium and fat marrow in both healthy and osteoporotic pelvises.
  • Researchers used CT and MRI scans to compare the properties of bone in intact pelves and in those with unilateral fractures, categorizing the samples into healthy and osteoporotic groups.
  • Findings indicate that osteoporotic patients show significant calcium loss in specific areas of the sacrum, which contributes to fracture risks, while injured sides exhibit bone density changes related to injury mechanics.
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Introduction: Percutaneous techniques for the surgical treatment of vertebral fractures are constantly progressing. There are different biomechanics involved.

Research Question: Two percutaneous, monoaxial fixation systems with different reduction tools were analyzed in relation to their reduction capacity.

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Introduction: Predicting the pre-morbid sagittal profile of the spine or segmental angles could enhance the process of planning the extent of fracture reduction. There is evidence that spinopelvic parameters may be suitable for this purpose.

Research Question: Is it possible to determine the inflection point and the mono- and bi-segmental endplate angles (EPA) in the thoracolumbar transition (from Th9 to L2) based on age, gender, spinopelvic parameters, and the adjacent EPA in the supine position?

Material And Methods: Based on Polytrauma CT scans in the supine position, the following spinopelvic parameters were measured using non-fractured spines: pelvic incidence (PI), sacral slope (SS), lumbar lordosis (LL), and the apex of the LL.

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Background: Patients affected by lumbar spinal stenosis (LSS) suffer from a multifactorial degeneration of the lumbar spine resulting in narrowing of the neuroforamina and spinal canal, leading to various functional limitations. It remains unclear whether LSS patients after surgery would benefit from early post-operative rehabilitation, or if a delayed rehabilitation would be more advantageous. The purpose of this partially randomized patient preference trial is to evaluate the impact of post-operative rehabilitation timing as well as surgical intervention type on psychometric properties and functional outcomes in patients with LSS.

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When treating ankle fractures, the question of syndesmosis complex involvement often arises. So far, there is no standardized method to reliably detect syndesmosis injuries in the surgical treatment of ankle fractures. For this reason, an intraoperative syndesmosis-test-tool (STT) was developed and compared to the recommended and established hook-test (HT).

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The hook test is a widely used intraoperative method for assessing syndesmosis stability. However, there are no recommendations regarding the force required to perform this test. Furthermore, the reliability of the test is unclear.

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Plantar plate positioning has been demonstrated as biomechanically superior. However, some operators remain resentful about the morbidity of the surgical approach. To provide improved plate fixation for first tarsometatarsal joint arthrodesis with respect to the tibialis anterior tendon, a medio-plantar plate was developed.

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Study Design: Multicenter prospective cohort study.

Objective: The study aims to validate the recently developed OF score for treatment decisions in patients with osteoporotic vertebral compression fractures (OVCF).

Methods: This is a prospective multicenter cohort study (EOFTT) in 17 spine centers.

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Article Synopsis
  • The study involved analyzing surgical strategies and outcomes for patients with osteoporotic thoracolumbar fractures classified as OF 5 within a larger multicenter cohort of 518 patients.
  • Out of 19 patients assessed, different surgical methods were utilized, with no major surgical complications but a 45% occurrence of general postoperative complications reported.
  • Results indicated significant improvements in patients' functional outcomes and quality of life at an average follow-up of 20 weeks, highlighting surgical stabilization as an effective treatment despite the associated complication rate.
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  • This study aimed to analyze treatment strategies for osteoporotic thoracolumbar OF 4 fractures, assessing complications and clinical outcomes in 518 patients.
  • Out of these, 152 patients with OF 4 fractures were evaluated, with the most common treatment being short-segment posterior stabilization, revealing varying outcomes based on age and treatment type.
  • The findings suggest that conservative treatment is effective for moderate symptoms, while hybrid stabilization showed better results, indicating that cement augmentation is a good alternative for specific patients.
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In the treatment of ankle fractures, complications such as wound healing problems following open reduction and internal fixation are a major problem. An innovative alternative to this procedure offers a more minimally invasive nail stabilization. The purpose of this biomechanical study was to clarify whether this method was biomechanically comparable to the established method.

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Introduction: In the treatment of upper cervical spine injuries, the semiconservative procedure of the halofixator is now of only secondary importance. Older studies from the 2000 s showed unsatisfactory rates of consolidation as well as high rates of complications. However, due to current data on therapy effectiveness, the literature is inconsistent.

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Implantation of a dual-head hip prosthesis to treat medial femoral neck fractures is often associated with significant blood loss. In elective endoprosthetics procedures, it has already been demonstrated that administration of tranexamic acid (TXA) reduces blood loss and need for postoperative transfusions, as well as reducing the frequency of postoperative complications. The aim of this study is to show whether the administration of TXA also leads to a reduction in perioperative blood loss and haemorrhage-associated complications when applied as part of treatment of femoral neck fractures using a dual-head prosthesis.

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Aim: Osteoporotic thoracolumbar fractures are of increasing importance. To identify the optimal treatment strategy this multicentre prospective cohort study was performed.

Purpose: Patients suffering from osteoporotic thoracolumbar fractures were included.

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Background: The correction of malposition according to vertebral fractures is difficult because the alignment at the time before the fracture is unclear. Therefore, we investigate whether the spinal alignment can be determined by the spino-pelvic parameters. Methods: Pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), adjacent endplate angles (EPA), age, sex, body weight, body size, BMI, and age were used to predict mono- and bisegmental EPA (mEPA, bEPA) in the supine position using linear regression models.

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Background: Treatment of pertrochanteric femoral fractures is often associated with significant blood loss. It has already been demonstrated that the administration of tranexamic acid (TXA) for endoprosthetic procedures reduces blood losses and leads to a decreased frequency of postoperative complications. The aim of this study is to demonstrate whether the administration of TXA as part of osteosynthesis treatment for pertrochanteric fractures using a proximal femoral nail reduces perioperative blood losses and haemorrhage-related complications.

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Purpose: Pelvic fragility fractures have steadily risen over the past decades. The primary treatment goal is the fastest possible mobilisation. If conservative therapy fails, surgical fixation is a promising approach.

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Background: In the regeneration and therapy of degenerated intervertebral discs, the height, volume or categorizing assessments, such as Pfirrmann classification, are used to quantify the discs themselves and the effects of therapy. Here, the question of transferability, in the sense of reliability, of the results arises in the common exchange.

Methods: We have investigated two established and a newly developed (9-point measurement), easy to use methods for height measurement and volume measurement on degenerated and healthy lumbar intervertebral discs of 66 patients regarding inter- and intra-observer reliability.

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Heat stress is a major environmental stress type that can limit plant growth and development. To survive sudden temperature increases, plants utilize the heat shock response, an ancient signaling pathway. Initial results had suggested a role for brassinosteroids (BRs) in this response.

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Article Synopsis
  • Osteoporotic fractures of the pelvis (OFP) are becoming a significant concern in orthopedics, prompting the need for a new, simpler, and more reliable classification system (CS) that uses both CT and MRI, as existing systems have limited reliability.
  • A consensus among trauma and orthopedic experts in German-speaking countries led to the creation of the new OF-Pelvis CS over five years, which was validated by having experienced surgeons categorize 25 anonymized cases using imaging scans.
  • The new classification has five subgroups indicating increasing instability and three modifiers that can be used alone or in combination; the inter-rater reliability scores are notably high, showing strong agreement among both the developers and the
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Objective: The study sought to investigate the reliability of computed tomography (CT)-derived Hounsfield unit (HU) measurements and ascertain the correlation between HU with quantitative CT (qCT)-derived bone mineral density (BMD) in cases of traumatic thoracolumbar fracture, based on native CT scans.

Methods: This study is a retrospective cross-sectional analysis of data sets from patients who received native CT scans and bone mineral density measurements (qCT) of the same vertebral body. Two different CT scanner models were used.

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