A Review on Additive Manufacturing Methods for NiTi Shape Memory Alloy Production.

The NiTi alloy, known as Nitinol, represents one of the most investigated smart alloys, exhibiting a shape memory effect and superelasticity. These, among many other remarkable attributes, enable its utilization in various applications, encompassing the automotive industry, aviation, space exploration, and, notably, medicine. Conventionally, Nitinol is predominantly produced in the form of wire or thin sheets that allow producing many required components.

[Femoral Fractures in Children Younger than Two Years. Are We Considering Abusive Etiology?].

Purpose Of The Study: The primary aim is to assess the proportion of children younger than two years with a femoral fracture who underwent a skeletal survey. The secondary aim of the study is to evaluate the patients' demographics, reported trauma mechanism, type of fracture, type of treatment and complication rate. MATERIAL AND METHODS This was a retrospective study of children younger than two years examined at the Department of Imaging Methods for a femoral fracture between 2015-2022.

Autologous Mesenchymal Stromal Cells Immobilized in Plasma-Based Hydrogel for the Repair of Articular Cartilage Defects in a Large Animal Model.

The treatment of cartilage defects in trauma injuries and degenerative diseases represents a challenge for orthopedists. Advanced mesenchymal stromal cell (MSC)-based therapies are currently of interest for the repair of damaged cartilage. However, an approved system for MSC delivery and maintenance in the defect is still missing.

Assessing Knee Stability in Adolescent Athletes with Osgood-Schlatter Disease Using the Y-Balance Test.

PURPOSE OF THE STUDY Osgood-Schlatter disease develops secondary to chronic patellar tendon overloading. The present study was designed to determine whether athletes with Osgood-Schlatter disease perform significantly worse in the Y-Balance Test compared to healthy subjects in a control group. MATERIAL AND METHODS The study involved ten boys (average age 13.

Fixation of Knee Osteochondral Lesions in Pediatric Patients with Magnesium-Based Implants.

PURPOSE OF THE STUDY Fixation of osteochondral fragments are relatively common procedures in pediatric orthopaedic surgery. The use of biodegradable magnesium implants in these indications appears to be a promising alternative to polymer implants due to their favorable mechanical properties and biological behavior. The purpose of this study is to evaluate the short-term clinical and radiological outcomes of the fixation of unstable or displaced osteochondral fractures and osteochondritis dissecans lesions in the knee joint using MAGNEZIX® screws and pins in pediatric patients.

Concurrence of High Corrosion Resistance and Strength with Excellent Ductility in Ultrafine-Grained Mg-3Y Alloy.

In the field of magnesium-based degradable implantable devices, the Mg-Y-RE-Zr alloying system (WE-type) has gained popularity due to its satisfying degradation rate together with mechanical strength. However, utilization of RE and Zr in the WE-type alloys was originally driven to improve Mg-based alloys for high-temperature applications in the industry, while for medical purposes, there is a question of whether the amount of alloying elements may be further optimized. For this reason, our paper presents the Mg-3Y (W3) magnesium alloy as an alternative to the WE43 alloy.

[Our Experience with ICON Hip Resurfacing System].

PURPOSE OF THE STUDY Our study aimed to assess the mid-term outcomes and complications with the ICON hip resurfacing system and to carry out a detailed analysis of pitfalls and risks associated with pairing the bearing surfaces of metal-on-metal hip implants. MATERIAL AND METHODS A total of 52 hip joints were assessed in 43 patients who received the ICON hip resurfacing system at our department between 2009 and 2013. The cohort included 34 men and 9 women.

Predictors of radiographic outcomes of conservative and surgical treatment of Legg-Calvé-Perthes disease.

Purpose: Treatment outcomes of conservative and surgical treatment of Legg-Calvé-Perthes disease (LCPD) have been shown to be conditioned by a number of factors that may vary across different populations. This retrospective study aimed to evaluate factors affecting radiographically assessed treatment outcomes in patients treated surgically or conservatively for LCPD at Faculty Hospital Motol, Prague, Czech Republic, between the years 2006 and 2019.

Methods: Data of forty-seven children comprising 52 hips were analysed.

Treatment of knee cartilage by cultured stem cells and three dimensional scaffold: a phase I/IIa clinical trial.

Purpose: Damage of the knee cartilage is a common condition manifesting itself mainly by pain and/or swelling that may substantially reduce the quality of life while ultimately leading to osteoarthritis in affected patients. Here, we aimed to evaluate the safety and efficacy of cultured autologous bone marrow mesenchymal stem cells (BM-MSCs) attached to the 3D Chondrotissue® scaffold by autologous blood plasma coagulation (BiCure® ortho MSCp) in the treatment of knee cartilage defects.

Methods: The primary endpoint of this phase I/IIa clinical trial was to evaluate the safety of the treatment.

Hypothermic Storage of 3D Cultured Multipotent Mesenchymal Stromal Cells for Regenerative Medicine Applications.

The regulatory requirements in cell processing, in the choice of a biomaterial scaffold and in quality control analysis, have to be followed in the clinical application of tissue-engineered grafts. Confirmation of sterility during quality control studies requires prolonged storage of the cell-based construct. After storage, preservation of the functional properties of the cells is an important prerequisite if the cells are to be used for cell-based tissue therapies.

[Assessment of Clinical Outcomes of Surgically Treated Rockwood Type III Acromioclavicular Dislocation with or without Coracoclavicular Ligament Suture].

PURPOSE OF THE STUDY Acromioclavicular (AC) joint dislocation and its surgical treatment still raises a number of questions that remain to be answered. In some types of dislocations, Rockwood type III in particular, the indication for surgical treatment as such is relative. There are numerous techniques and implants available for the reconstruction of AC joint.

Paediatric pelvic injuries: a retrospective epidemiological study from four level 1 trauma centers.

Aim Of The Study: Epidemiologic evaluation of pelvic ring injuries in children.

Methods: Retrospective analysis over a period of 13 years, excluding pathological fractures. AO/OTA type, epidemiological data, type of treatment, and complications were recorded.

[Comparison of Bone Marrow Stromal Cells from Different Anatomical Locations for Evaluation of Their Suitability for Potential Clinical Applications].

PURPOSE OF THE STUDY In patients older than 40 years of age, treatment of chondral lesions of the knee employing microfractures does not provide satisfactory outcomes. One of the contributing factors may be the age-related lack of sufficient mesenchymal stromal cells able to efficiently migrate into the desired site of the lesion. Concomitant application of mononuclear cells (MNCs) or cultured mesenchymal stem cells (MSCs) isolated from bone marrow and seeded on a 3D scaffold could provide an alternative enhancing therapeutic efficacy in these patients.

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.

[Interposition and Suspension Arthroplasty of Carpometacarpal Joint of the Thumb Using the TIE-IN Implant].

PURPOSE OF THE STUDY The aim of the study was to present the surgical technique combining the interposition and suspension arthroplasty using the TIE-IN implant as a treatment option for advanced symptomatic to final stage rhizarthrosis. MATERIAL AND METHODS Since 2015 we have performed the interposition arthroplasty combined with suspension arthroplasty using the TIE-IN implant in 12 patients, mostly indicated for stage IV rhizarthrosis. In two cases stage III rhizarthrosis with concomitant trapezium destruction was present.

[Anatomical All-Inside Anterior Cruciate Ligament Reconstruction Using Quadrupled Semitendinosus Tendon Graft with Posteromedial Harvest - Clinical Results of Prospective Study at a Minimum 12-Months Follow-up].

PURPOSE OF THE STUDY This original paper aims to present the conclusions of the prospective study evaluating the clinical results of anatomical all-inside ACL reconstruction using quadrupled semitendinosustendon graft with posteromedial harvest using suspensory fixation by Tightrope implants at the follow-up of at least 12 months. MATERIAL AND METHODS The prospective study included a total of 119 patients (74 men/39 women) with the mean age of 28.3 (18-52) years, in whom demographic data was collected and a clinical examination was performed.

[Correlation between the Arthroscopic and MRI Findings in Patients Active in Sports with Clinically Suspected Acetabular Labral Tear - Prospective Study Results].

PURPOSE OF THE STUDY The aim of our prospective study was to establish correlation between the arthro-MRI and arthroscopic findings in patients active in sports clinically suspected of having a hip labral tear. We sought to identify the benefits of arthro-MRI for clinical practice prior to the considered hip arthroscopy. MATERIAL AND METHODS The prospective study included 34 patients with hip pain and clinically suspected of having a labral tear.

[Osteochondritis Dissecans in Children - Treated with Arthroscopic Drilling].

PURPOSE OF STUDY Osteochondritis dissecans (OCHD) is an increasingly diagnosed disease among adolescent patients. It is a condition affecting subchondral bone and the lining cartilage. If left untreated, it can cause destruction of cartilage of the affected joint leading to early development of arthrosis.

[Evaluation of Clinical Outcomes of Arthroscopical Treatment of Femoroacetabular Impingement Hip Syndrome - 2-Year Outcomes].

PURPOSE OF THE STUDY Hip arthroscopy is a widely used method of treatment of hip pathology. It is a technically demanding procedure for which accurate indication is critical. The indication criteria, however, are not yet fully supported by long term results of large patient groups in recent literature.

Hip arthroscopy learning curve: a prospective single-surgeon study.

Purpose: Arthroscopy of the hip joint is considered a demanding procedure with long learning curve. There are only a few studies that concentrate on this topic. This prospective clinical study evaluates the learning curve of the hip arthroscopy based on clinical outcomes, surgical time, and complication rate.

[Rare Dorsal Traumatic Sternoclavicular Joint Dislocation in a 14-Year-Old Patient - a Case Report].

We report a case of a 14-year-old patient with rare dorsal sternoclavicular dislocation caused by a sports injury. The patient was admitted to our department for further investigation and treatment. After a series of examinations, an open reduction and fixation using K-wires was used as a treatment modality.

[Structural Damage to the Hamstring Graft due to Interaction with Fixation Material and its Effect on Biomechanical Properties of ACL Reconstruction].

PURPOSE OF THE STUDY Hamstring grafts are commonly used for ACL reconstruction. The purpose of our study is to determine the effects of the suspension fixation compared to graft cross-pinning transfixation, and the effect(s) of structural damage during the preparation of the graft on biomechanical properties of the graft. MATERIAL AND METHODS The design of the study is a cadaveric biomechanical laboratory study.

[Treatment of pelvic avulsion fractures in children and adolescents].

Introduction: Paediatric avulsion fractures of the pelvis and hip joint are rare injuries most commonly associated with a rapid muscle contraction of the respected apophysis, which is the weakest component of the growing skeleton. The chosen therapy option can be either conservative or surgical.

Methods: We present a cohort of 69 patients treated for an apophyseal avulsion fracture of the anterior superior / inferior iliac spine, the lesser and greater trochanters iliac crest and the ischial tubercle.

[Simultaneous Traumatic Rupture of Patellar Ligament and Contralateral Rupture of Quadriceps Femoris Muscle].

Our paper presents a unique case of a 64-year-old patient after a fall, treated with oral antidiabetic drugs for type II diabetes mellitus. Following a series of examinations, a bilateral injury was diagnosed - patellar ligament tear on the right side and rupture of quadriceps femoris muscle on the left side. It is a rare injury, complicated by simultaneous involvement of both knee joints.

[Avascular necrosis of the femoral head].

Avascular necrosis of the femoral head in adults is not common, but not too rare diseases. In orthopedic practice, it is one of the diseases that are causing implantation of hip replacement at a relatively early age. In the early detection and initiation of therapy can delay the implantation of prosthesis for several years, which is certainly more convenient for the patient and beneficial.