Search

Instability and impingement of the hip are the main pathomechanisms that can lead to chondrolabral damage, painful restriction of motion and early hip osteoarthritis due to increased mechanical stress, even in young patients. The goals of joint-preserving hip surgery are correction of the osseous deformities and chondrolabral damage as well as restoration of joint function. A��prerequisite for successful surgery is the identification of the underlying hip pathologies, which can also occur in combination. Dedicated radiographic and magnetic resonance (MR) imaging of osseous morphology and the internal degenerative joint lesions play an essential role for the treatment indications and surgical treatment planning. This article provides a��concise overview of the prevalence, pathomechanisms and indicated treatment of hip deformities as well as detailed recommendations on the specific radiological clarification.

Objectives: Patients with femoro-acetabular impingement (FAI) combined with femoral retroversion or reduced femoral version (FV) can be treated with open hip surgery or with hip arthroscopy. Some previous studies reported good clinical outcomes after hip arthroscopy, while for some hip surgeons femoral [for full text, please go to the a.m. URL]

Fragestellung: Die Evaluierung von Hüftknorpel und Labrum basiert standardmäßig auf 2D-Bildern. 3D-Rekonstruktionen sind über manuelle Segmentierungen möglich, jedoch zeitaufwändig und daher nicht Teil der klinischen Praxis. Unser Ziel war es, eine neue Deep-Learning-basierte [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Fragestellung: Die periazetabuläre Osteotomie ist seit ihrer Erstbeschreibung 1984 der Goldstandard in der Behandlung der Hüftdysplasie (DDH). Seit 1997 wird die PAO auch zur Behandlung der azetabulären Retroversion (RV) als antevertierende PAO angewandt. Da Operationsindikation und präoperative [zum vollständigen Text gelangen Sie über die oben angegebene URL]

This study explores how chemical and microbial properties of litters can be affected by coastal environments across the Mediterranean basin. A litterbag experiment includingPinus halepensisMill. andPistacia lentiscusL., collected from both inland and coastal areas, was set up in France, Greece and Algeria. Control litterbags were left in their sampling sites and a transfer of litterbags from inland to coastal areas was performed to test whether the effect of the specific constraints of coastal environments varies according to the country and the litter type. After 10 months, litter chemical composition (CP/MAS(13)C-NMR) and microbial activities (cellulase activity, basal respiration, catabolic diversity using Biolog) and community structure (TRFLP) were analysed. Coastal conditions led to various responses: (i) litter aromaticity differed in the coastal zones depending on the country (high in the Greek coastal area, low in the Algerian coastal zone), (ii) fewer functionally diversified microbial communities were found in the Greek coastal area compared to the French and Algerian coasts, (iii) genetic diversity and richness were strongly impacted after transfer to the coastal zone whatever the country. The type of litter shaped microbial communities: (i) at a local scale (i.e., in either coastal or inland areas) catabolic profiles and cellulase activities varied with the plant species, (ii) at a regional scale, the effect of coastal conditions differed with the plant species (basal respiration, Shannon-Weaver index, catabolic diversity H ', cellulases and catabolic profiles). Thus, litter microbial properties differed in coastal environments across the Mediterranean basin and plant litter type plays a major role in microbial properties at a large spatial scale. Highlights The environmental drivers of litter microbial sensitivity to water potential stress were investigated Litterbag transfers from inland to coastal areas were performed in the Mediterranean. Soil and land system units conform to long-tail or heavy tail distributions. Microbial diversity of inland litters decreased when exposed to coastal conditions Litter plant species shape microbial functioning even at wide spatial scales. Coastal areas and plant litter drive microbial responses to water potential stress.

This study, carried out in a long-term sugarcane trial, investigated changes in selected soil microbiological properties induced by continuous crop residue burning or mulching, with and without fertiliser application. The sugarcane residue treatments are: a) burned with tops removed (Bto); b) burned with tops scattered (Bt); and c) green harvested and mulched (M). These treatments were either fertilised (F) or unfertilised (Fo). The amount of double stranded deoxyribonucleic acid (dsDNA), used in this study as an indicator of soil microbial biomass, increased with increasing crop residue levels (Bto: 10.4 mu g g(-1): 12.2 mu g g(-1) M: 14.4 mu g g(-1)) in Fo treatments, suggesting that high soil organic matter levels in M treatments serves as the major energy and carbon source for microorganisms. However, significant differences (p

AIMS: The modified Dunn procedure has the potential to restore the anatomy in hips with severe slipped capital femoral epiphyses (SCFE). However, there is a risk of developing avascular necrosis of the femoral head (AVN). In this paper, we report on clinical outcome, radiological outcome, AVN rate and complications, and the cumulative survivorship at long-term follow-up in patients undergoing the modified Dunn procedure for severe SCFE. PATIENTS AND METHODS: We performed a retrospective analysis involving 46 hips in 46 patients treated with a modified Dunn procedure for severe SCFE (slip angle > 60°) between 1999 and 2016. At nine-year-follow-up, 40 hips were available for clinical and radiological examination. Mean preoperative age was 13 years, and 14 hips (30%) presented with unstable slips. Mean preoperative slip angle was 64°. Kaplan-Meier survivorship was calculated. RESULTS: At the latest follow-up, the mean Merle d'Aubigné and Postel score was 17 points (14 to 18), mean modified Harris Hip Score was 94 points (66 to 100), and mean Hip Disability and Osteoarthritis Outcome Score was 91 points (67 to 100). Postoperative slip angle was 7° (1° to 16°). One hip (2%) had progression of osteoarthritis (OA). Two hips (5%) developed AVN of the femoral head and required further surgery. Three other hips (7%) underwent implant revision due to screw breakage or change of wires. Cumulative survivorship was 86% at ten-year follow-up. CONCLUSION: The modified Dunn procedure for severe SCFE resulted in a low rate of AVN, low risk of progression to OA, and high functional scores at long-term follow-up. The slip deformities were mainly corrected but secondary impingement deformities can develop in some hips and may require further surgical treatment.

Fragestellung: Das posteriore extraartikuläre ischiofemorale Hüft-Impingement kann durch eine hohe femorale Antetorsion verursacht sein. Es ist typischerweise zwischen dem Tuber Ischiadicum und dem Trochanter minor lokalisiert und häufig sind junge Frauen davon betroffen. Eine proximale[zum vollständigen Text gelangen Sie über die oben angegebene URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2018)

Objectives: It is unclear whether Femoral Retrotorsion acts as an independent cause of extra-articular or anterior intra-articular femoroacetabular impingement. Therefore, we evaluated symptomatic hips with Femoral Retrotorsion, with and without cam and pincer FAI, using CT-based virtual 3D range[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2018)

Objectives: The modified Dunn procedure has the potential to restore the anatomy in hips with severe slipped capital femoral epiphyses (SCFE) while protecting the blood supply to the femoral head and minimizing secondary impingement deformities. However, there is controversy about the risks associated[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2018)

OBJECTIVE The experimental induction of cam-type femoroacetabular impingement (FAI) in sheep is established. To tap the full potential of this ovine model, one should be able to perform a femoral osteochondroplasty safely. This study was based on previous cadaver experiments on the blood supply to the ovine femoral head and on the biomechanical strength of the proximal femur following offset creation. We hypothesized that offset creation in this ovine FAI model does not lead to (1) avascular necrosis (AVN) of the ovine femoral head or (2) iatrogenic femoral neck fractures and (3) can be performed effectively. DESIGN In this experimental, controlled, prospective study nine sheep underwent unilateral FAI induction through an intertrochanteric, varus osteotomy. Seventy days following FAI induction, femoral osteochondroplasty was performed. Sheep were sacrificed after another 140 days. Radiographs, computed tomography (CT) scans and MRI were acquired. Histologic samples were stained with hematoxylin-eosin. (1) The multimodal Association Research Circulation Osseous (ARCO) classification was used for assessment of AVN. (2) Femoral neck fractures were assessed with the multimodal imaging approach. (3) Pre- and postoperative (=after sacrifice) alpha angles and femoral neck diameters were compared. RESULTS (1) No signs for AVN according to the ARCO classification or (2) for femoral neck fractures were detected. (3) Mean alpha angles and femoral neck diameters decreased significantly (p < 0.001) superiorly by at least 30° respectively 4 mm after the offset creation. CONCLUSIONS Femoral osteochondroplasty can be performed effectively and without the risk of AVN or femoral neck fractures in this ovine FAI model.

Objectives: dGEMRIC (delayed gadolinium enhanced MRI of cartilage) and T2 mapping are non-invasive MRI techniques increasingly used to judge cartilage quality, especially in the setting of prearthritic conditions, such as femoroacetabular impingement (FAI). These techniques estimate distinct biochemical[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2017)

Objectives: Acetabular labrum size and labral tears antero-superior are typical for femoroacetabular Impingement (FAI). Femoral torsion (FT) is a novel cause for anterior FAI and influences labral size and tear pattern. Therefor we asked what is the anterior labral size and which labral tear[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2017)

Objectives: Torsional deformities of the femur have been recognized as a cause of femoroacetabular impingement (FAI) and hip pain. High femoral antetorsion can result in decreased external rotation and a posterior FAI, which is typically located extraarticular between the ischium and trochanter minor.[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)

Objectives: Torsional deformities are increasingly recognized as an additional factor in young patients with hip pain resulting from pincer- and cam-deformities. For example, decreased femoral torsion can worsen an anterior femoro-acetabular impingement (FAI) conflict while an increased torsion can [for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)

Introduction: Since its first description in 1988, periacetabular osteotomy (PAO) has become the gold-standard worldwide in surgical treatment of developmental dysplasia of the hip (DDH). Several long-term studies have proven the efficacy of this procedure. In this study, we evaluated the mean 30-years[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)

NEWFOR (NEW technologies for a better mountain FORest timber mobilization) is a research project funded by the alpine space programme. It brings together 14 institutes of the 6 countries of the alpine space with the aim of improving forest timber evaluation and mobilisation. The project considers the whole wood supply chain, from forests to wood yards, with a particular emphasis on new remote sensing technologies and geographical information systems. The report presents the major findings of the project and outlines some key issues for a better mobilisation of alpine timber ressoures.

NEWFOR (NEW technologies for a better mountain FORest timber mobilization) is a research project funded by the alpine space programme. It brings together 14 institutes of the 6 countries of the alpine space with the aim of improving forest timber evaluation and mobilisation. The project considers the whole wood supply chain, from forests to wood yards, with a particular emphasis on new remote sensing technologies and geographical information systems. The report presents the major findings of the project and outlines some key issues for a better mobilisation of alpine timber ressoures.