Empowering Simple Graph Convolutional Networks.

Many neural networks for graphs are based on the graph convolution (GC) operator, proposed more than a decade ago. Since then, many alternative definitions have been proposed, which tend to add complexity (and nonlinearity) to the model. Recently, however, a simplified GC operator, dubbed simple graph convolution (SGC), which aims to remove nonlinearities was proposed.

Treatment of Large Cartilage Defects in the Knee by Hydrogel-Based Autologous Chondrocyte Implantation: Two-Year Results of a Prospective, Multicenter, Single-Arm Phase III Trial.

Objective: To evaluate the clinical outcome of a hydrogel-based autologous chondrocyte implantation (ACI) for large articular cartilage defects in the knee joint.

Design: Prospective, multicenter, single-arm, phase III clinical trial. ACI was performed in 100 patients with focal full-thickness cartilage defects ranging from 4 to 12 cm in size.

Multiresolution Reservoir Graph Neural Network.

Graph neural networks are receiving increasing attention as state-of-the-art methods to process graph-structured data. However, similar to other neural networks, they tend to suffer from a high computational cost to perform training. Reservoir computing (RC) is an effective way to define neural networks that are very efficient to train, often obtaining comparable predictive performance with respect to the fully trained counterparts.

[Derotational Intertrochanteric Osteotomy in Habitual Dislocation of the Patella].

PURPOSE OF THE STUDY The preoperative planning in habitual dislocation of the patella should take into account all pathologies and the procedure should address all abnormalities. One of them might be also the rotational deformity of the femur. The purpose of this prospective study was to confirm the hypothesis that the only correction of pathological femoral anteversion by derotational intertrochanteric osteotomy (in the absence of another pathology) or the correction of femoral anteversion with simultaneous reconstruction of the patellofemoral joint provide adequate stability for the patellofemoral joint, with respect to the elimination of the risk of recurrent dislocation of the patella.

Meniscus transplantation-prospective assessment of clinical results in two, five and ten year follow-up.

Purpose: The authors present clinical results in patients following transplantation of deep-frozen menisci within ten years following the surgery.

Methods: A cohort of 46 patients who were transplanted altogether 49 menisci was subject to prospective study following six months, two, five and ten years after meniscus transplantation. For subjective assessment, we used KOOS, IKDC and Lysholm scores; objective assessment was based on load X-ray examination of the operated knee at two, five and ten years after the surgery, MRI examination of 34 patients in the interval of two and ten years after the operation, control arthroscopy was performed in 23 patients eight of whom suffered a new injury.

Fourniers gangrene as Amyands hernia complication.

Fourniers gangrene is a rare but fast deteriorating and serious condition with high mortality. In most cases, it is characterized as necrotizing fasciitis of the perineum and external genitals. Amyands hernia is a rare condition where the appendix is contained in the sac of an inguinal hernia.

[Comparison of Tension Banding and Modified Orthocord Sling in Acromioclavicular Dislocation Treatment - Non-Randomized Retrospective Study].

PURPOSE OF THE STUDY Acromioclavicular joint dislocations (AC) represent one of the most frequent injury to the shoulder gridle. Low grade injuries type Rockwood I-II are treated non-operatively. Whereas high grade injuries type Rockwood III-VI are usually treated operatively.

[Assessment of Reduction Abilities of an Expandable Stent in Treating Osteoporosis-Related Fractures of Th/L (Thoracolumbar) Spine].

PURPOSE OF THE STUDY The method of stabilising the osteoporosis-related spinal fractures using an expandable stent (vertebral body stent - VBS) and bone cement is generally accepted for its minimal invasiveness, a low risk of complications and confirmed analgesic effect. The efficiency of reduction of a compressed vertebra is, however, still discussed in the literature. Our hypothesis was that the stent expansion in the vertebral body can achieve a statistically significant reduction in the anterior, middle and posterior part of the vertebra.

[Arthroscopic Treatment of Chronic Retrocalcaneal Bursitis - Endoscopic Calcaneoplasty].

INTRODUCTION The authors evaluate the results of endoscopic treatment and analyse the causes of persisting difficulties in retrocalcaneal bursitis unresponsive to conservative treatment. Stated as one of the causes is the possible chronic irritation of minor/partial tears of anterior parts of the distal portion of the Achilles tendon, which have no chance to heal due to continued overload and impingement syndrome of the superior prominence of the calcaneal tubercle. MATERIAL AND METHODS The authors evaluate the group of 24 patients (10 women and 14 men) diagnosed with retrocalcaneal bursitis, who reported more than 12 months of difficulties and in whom the conservative therapy options have already been exhausted.

[Surgical Treatment of the Achilles Insertional Tendinopathy Using the Augmentation with the BT Graft from M. Quadriceps Femoris].

PURPOSE OF THE STUDY The aim of the prospective study was to evaluate the effectiveness of the Achilles insertion tendinopathy treatment, focusing on the evaluation of results in patients treated for retrocalcaneal pain, and to review the outcomes following the surgical treatment by means of Achilles tendon reinforcement with the bone-tendon autograft (BT). MATERIAL AND METHODS The group comprised 18 patients, 10 men and 8 women, who were surgically treated with in line with the described surgical protocol. The group was treated at the author s department in the period 2013-2016.

[Treatment of the Shoulder Impingement Syndrome with PRP Injection].

PURPOSE OF THE STUDY This study aimed to explore the effects of new therapeutic procedures in patients with shoulder impingement syndrome. The primary goal of the study was to confirm the hypothesis that the application of the platelet-rich plasma (PRP) in patients with shoulder impingement syndrome will have a positive effect on both the subjective and objective evaluation of their condition. The clinical condition before and after the treatment was evaluated.

[Treatment of Extensive Chondral Defects of the Patella after Patellar Dislocation].

PURPOSE OF THE STUDY Patellar dislocation is a fairly frequent knee joint injury in young patients. In most cases, this injury can be treated conservatively or surgically. In many cases, patellar cartilage or lateral femoral condyle or both these parts of articular surface are injured, and in conservative treatment this chondral damage very often remains undiagnosed.

[Not Available].

PURPOSE OF THE STUDY The aim of the study was to evaluate the safety and efficacy of the application of platelet- and leukocyte-rich plasma (L-PRP) in the treatment of lateral humeral epicondyle (ERH) as compared to the administration of corticosteroid therapy. MATERIAL AND METHODS It was a prospective, double-blind and randomized clinical trial. It included a total of 25 cases of ERH in 23 patients aged 18 to 60 years.

[Bilateral Asymmetric Traumatic Dislocation of Hip Joints].

The authors present a rare case of bilateral asymmetric traumatic dislocation of hip joints, where the left joint was treated conservatively after the reduction, while the right joint, with an acetabular fragment interposition, was treated surgically - by arthroscopically assisted reduction and fixation of an osteochondral fragment of posterior wall of the acetabulum. The female patient healed with no complications, showing an excellent clinical outcome with no signs of instability or limited mobility of hip joints, and also with no signs of para-articular calcification or necrosis of the hip at 1 year after the injury and treatment. Bilateral asymmetric dislocation of hip joint is a rare injury with the total incidence of 150 cases as reported by the literature.

[Treatment for Periprosthetic Femoral Fractures after Total Hip Arthroplasty].

PURPOSE OF THE STUDY To give a description of the patient group, risk factors, classification, therapeutic procedures and treatment outcomes in periprosthetic femoral fractures after total hip arthroplasty treated in the Trauma Hospital in Brno. MATERIAL AND METHODS This retrospective study comprised of 51 patients treated for a periprosthetic femoral fracture between 2003 and 2013. This included 19 (37%) intra-operative and 32 (63%) post-operative fractures.

[Quantitative Analysis of Power Doppler Images in Lateral Humeral Enthesopathy].

PURPOSE OF THE STUDY The evaluation of efficiency of power Doppler sonography in the diagnosis of lateral humeral enthesopathy, role of correct assessment of Doppler sonographic images with the method of quantitative analysis, assessment of statistical differences between a group of patients with lateral humeral enthesopathy and a control group of healthy subjects and assessment of the diagnostic power of this test. In addition, consideration of the relevance of each area of the lateral compartment for assessment and diagnosis making in lateral humeral enthesopathy. MATERIAL AND METHODS A total of 41 subjects, aged 18 to 60 years, entered the study.

Introduction of a New Locking Nail for Treatment of Intraarticular Calcaneal Fractures.

Objectives: To reduce the complication rate associated with open reduction and internal fixation of displaced intraarticular calcaneal fractures through extensile approaches, a locking nail system (C-Nail) was developed for internal fixation.

Design: Prospective case-control study.

Setting: Two level I trauma centers (university hospital) and 1 large regional hospital in the Czech Republic and Germany.

Dyslipidemia is Associated with Unfit and Overweight-Obese Children and Adolescents.

Background: Both poor aerobic fitness and obesity, separately, are associated with abnormal lipid profiles.

Objective: To identify possible relationships of dyslipidemia with cardiorespiratory fitness and obesity, evaluated together, in children and adolescents.

Methods: This cross-sectional study included 1,243 children and adolescents (563 males and 680 females) between 7 and 17 years of age from 19 schools.

[Clinical outcomes of surgical management of acromioclavicular dislocation with and without ligament suturing].

Introduction: The aim of the study was to present a retrospective assessment of clinical outcomes of acromioclavicular (AC) dislocation surgery with and without suturing of the coracoclavicular ligament (CC).

Material And Methods: Patients regardless of their age and gender were included in the study. All the subjects were operated by the same surgeon using the same surgical technique--traction cerclage.

[Dislocation of the clavicle: case report].

A traumatic dislocation of the clavicle is a rare injury. So far 37 reports of this trauma have been found in the relevant literature; they are most often treated by surgery. A 32-year-old woman was admitted to local hospital for polytraumata sustained in a motor car accident.

[Inveterated posterior glenohumeral dislocation treated surgically from the anterior approach].

Purpose Of The Study: The aim of the study is to remind the medical community of the occurrence of rare dorsal glenohumeral dislocations and of the need to pay increased attention to radiographic and clinical examination in the patients in whom signs of this injury are also supported by medical history. When this dislocation becomes a chronic disorder, it can frequently be managed only by surgical intervention. The treatment algorithm used at the authors' institutions is described.

Genotypic versus phenotypic methods in the detection of Listeria monocytogenes prosthetic joint infection.

A rare case of a severe prosthetic joint infection in a 71-year-old immunocompetent woman is presented. Listeria monocytogenes was identified in two consecutive samples using broad-range PCR and sequencing, whereas cultivation remained negative for the first sample and streptococci of a non-group A streptococci, non-group B streptococci type were detected for the second one. This report demonstrates that the phenotypic approach may lead to misidentification of L.

[Transplantation of deep frozen menisci].

Purpose Of The Study: Subtotal or total meniscectomy will increase weight-bearing per square unit of the cartilage surface approximately threeand- half-times. A long-term overloading of cartilage is clinically manifested by pain, swelling and a rapid onset of early arthritic lesions discernible on radiograms. One of the options for the treatment of degenerative changes in the joint is meniscal transplant.

[Treatment of intra-articular proximal tibial evaluation of two- to seven-year follow-up].

Purpose Of The Study: Intra-articular fractures of the proximal tibia always present a complicated therapeutic problem. In this retrospective study, the results of both conservative and surgical treatment of these fractures are evaluated.

Material: In the period from 1997 to 1999, 114 patients with proximal tibial fractures were treated in the Traumatological Hospital in Brno-Traumacenter.

[Reconstruction of soft tissue defects of lower leg, ankle and foot using sural flap].

Covering soft-tissue injuries on the lower third of the leg, ankle joint and on the calcaneal part of the foot has so far been the domain for free flap use. The distally based superficial sural artery flap with vascular axis of the sural nerve was first described by Masquelet. We treated 31 patients after injuries with this method.