Percutaneous sperm retrieval technique: A reliable and effective sperm retrieval procedure for ICSI in patients with obstructive azoospermia.

Objective: To study the reliability and effectiveness of the percutaneous sperm retrieval technique.

Methods: We retrospectively analyzed the records of 123 consecutive patients with obstructive azoospermia who underwent percutaneous sperm retrieval and intracytoplasmic sperm injection (ICSI) using Percutaneous Epididymal Sperm Aspiration (PESA) with or without a rescue Testicular Sperm Aspiration (TESA). We compared patients who had the first sperm retrieval ever and patients who had more than one sperm retrieval performed.

Clinical characteristics of sarcoma patients: a population-based data analysis from a German clinical cancer registry.

Purpose: Sarcomas are a heterogeneous group of malignant neoplasms with a wide range of histological types and occur in almost any anatomic site and side. This study evaluated the prognostic factors in sarcoma patients based on German clinical cancer registry data.

Methods: The German clinical cancer register of Saxony-Anhalt was used for all data analyses.

Karst-bauxite formation during the Great Oxidation Event indicated by dating of authigenic rutile and its thorium content.

Aluminium (Al)-rich palaeosols-i.e., palaeobauxite deposits-should have formed in karst depressions in carbonate sequences as a result of acidic solutions from oxidative weathering of sulfide minerals during the Great Oxidation Event (GOE), but no GOE-related karst-palaeobauxite deposits have so far been recorded.

[Periprosthetic infection after total hip replacement : Risk factors for an early infection after primary implantation].

Background: Periprosthetic infection is one of the most serious complications in primary arthroplasty. The infection rates reported in the current literature range from 0.36 to 2.

Correction to: The High Flex Total Knee Arthroplasty-Higher Incidence of Aseptic Loosening and No Benefit in Comparison to Conventional Total Knee Arthroplasty: Minimum 16-Years Follow-Up Results.

[This corrects the article DOI: 10.1007/s43465-020-00276-3.].

Superior clinical results and higher satisfaction after customized compared with conventional TKA.

Investigation of functional outcome and patient`s satisfaction after implantation of a customized versus conventional TKA. In 31 consecutively enrolled patients with primary gonarthrosis, 33 customized TKA (custTKA) and in 31 patients, a conventional TKA (convTKA) was implanted. Perioperative and postoperative management were identical.

Correction to: The High Flex Total Knee Arthroplasty-Higher Incidence of Aseptic Loosening and No Benefit in Comparison to Conventional Total Knee Arthroplasty: Minimum 16-Years Follow-Up Results.

[This corrects the article DOI: 10.1007/s43465-020-00276-3.].

Retrospective Clinical and Radiological Outcomes of Total Hip Arthroplasty in 51 Patients After a Mean 8.2 Years Using the Nanos® Short-stem Prosthesis.

Introduction: Over the past several years, femoral short-stem hip implants have become more popular as a treatment option in the field of primary hip arthroplasty for younger and more active patients. Current data on clinical outcomes and the implant survival rates in patients with short-stem implants cover a maximum of five to six years. The aim of this study was to assess the survival rates, as well as clinical and functional outcomes, in total hip arthroplasty (THA) using the Nanos® short-stem implant (Smith & Nephew, Marl, Germany) over a follow-up period exceeding 5 y.

The High Flex Total Knee Arthroplasty-Higher Incidence of Aseptic Loosening and No Benefit in Comparison to Conventional Total Knee Arthroplasty: Minimum 16-Years Follow-Up Results.

Purpose: This prospective randomized study compares the clinical and radiographic long-term results at least 16 years after total knee arthroplasty (TKA) between a mobile-bearing high flex and a fixed-bearing posterior-stabilized knee.

Methods: In 2000, we included 60 patients who underwent a TKA. Patients were divided into two groups.

Molybdenum-isotope signals and cerium anomalies in Palaeoproterozoic manganese ore survive high-grade metamorphism.

Molybdenum (Mo) and its isotopes have been used to retrieve palaeoenvironmental information on the ocean-atmosphere system through geological time. Their application has so far been restricted to rocks least affected by severe metamorphism and deformation, which may erase or alter palaeoenvironmental signals. Environmental Mo-isotope signatures can be retrieved if the more manganese (Mn)-enriched rocks are isotopically depleted and the maximum range of δMo values is close to the ~2.

Comparative Results of Percutaneous Calcaneal Osteotomy in Correction of Hindfoot Deformities.

Background:: Calcaneal osteotomies are often required in the correction of hindfoot deformities. The traditional open techniques, which include a lateral or oblique incision, are occasionally associated with wound healing problems and neurovascular injury.

Methods:: A total of 122 consecutive patients who underwent a calcaneal osteotomy for hindfoot realignment treatment were included.

Preliminary results of a plantar plate for Lapidus arthrodesis.

The TMT I arthrodesis is an established procedure for the correction of hallux valgus deformity associated with the instability of the TMT-I joint. A risk of transfer metatarsalgia is reported in the literature associated with persistant elevation of MT-I. Detailed information for ideal positioning of the arthrodesis is missing so far.

Influence of varus/valgus positioning of the Nanos® and Metha® short-stemmed prostheses on stress shielding of metaphyseal bone.

The aim of this study was to analyze bone remodeling around the Nanos® (Smith & Nephew) and Metha® (Aesculap AG) implants as a function of varus/valgus stem positioning. In 75 patients with diagnosed coxarthrosis, either Nanos® (n= 51) or Metha® (n= 24) prostheses were implanted. Digital assessment of plain radiographs immediately, 97 days, and 381 days after THA showed no clinically-relevant migration, angulation, or change in offset and center of rotation.

[Partial replacement of the knee joint with patient-specific instruments and implants (ConforMIS iUni, iDuo)].

Knee arthroplasty is a successful standard procedure in orthopedic surgery; however, approximately 20 % of patients are dissatisfied with the clinical results as they suffer pain and can no longer achieve the presurgery level of activity. According to the literature the reasons are inexact fitting of the prosthesis or too few anatomically formed implants resulting in less physiological kinematics of the knee joint. Reducing the number of dissatisfied patients and the corresponding number of revisions is an important goal considering the increasing need for artificial joints.

Immediate fullweightbearing after tarsometatarsal arthrodesis for hallux valgus correction--Does it increase the complication rate?

Background: The arthrodesis of the first tarsometatarsal joint has a high correction potential in the treatment of hallux valgus deformity. Compared to distal correction procedures, a pseudarthrosis rate of 12-20% is quoted, however. In a prospective study the results of two different treatment procedures after correction arthrodesis were compared.

A prospective randomized radiographic and dual-energy X-ray absorptiometric study of migration and bone remodeling after implantation of two modern short-stemmed femoral prostheses.

Background: The aim of this prospective randomized study was to analyze migration and strain transmission of the Metha™ and Nanos™ femoral prostheses.

Materials And Methods: Between 1 January 2011 and 2 April 2013, 50 patients were randomized to receive short-stemmed femoral prostheses. Metha™ stems were implanted in 24 patients (12 female, 12 male; mean age 58.

What is the best strategy for the prevention of transfusion-transmitted malaria in sub-Saharan African countries where malaria is endemic?

The transmission of malaria by blood transfusion was one of the first recorded incidents of transfusion-transmitted infections (TTIs). Although the World Health Organization (WHO) recommends that blood for transfusion should be screened for TTIs, malaria screening is not performed in most malaria-endemic countries in sub-Saharan Africa (SSA). The transfusion of infected red blood cells may lead to severe post-transfusion clinical manifestations of malaria, which could be rapidly fatal.

Calcaneocuboid distraction arthrodesis with allogenic bone grafting for correction of pes planovalgus.

Calcaneocuboid distraction arthrodesis is regarded as an excellent and reliable surgical procedure for correction of pes planovalgus. Despite a potentially high complication rate, the use of an autologous iliac crest graft is regarded as the method of choice. In a prospective trial the results in 12 feet after calcaneocuboid distraction arthrodesis for pes planovalgus correction with allogenic bone graft were investigated.

Symptoms of craniomandibular dysfunction in professional orchestra musicians.

Background: Up to 80% of professional musicians are affected by playing-related musculoskeletal disorders, but data regarding the frequency of craniomandibular dysfunction (CMD) in professional orchestra musicians is scarce.

Aims: To evaluate the frequency of CMD and its relation to musculoskeletal pain in various body regions.

Methods: A questionnaire-based survey approach assessing CMD symptoms and musculoskeletal pain in professional orchestra players was adopted.

[Ankle arthrodesis with an posterolateral approach using a polyaxial angle stable Talarlock® plate].

Objective: Safe arthrodesis of the ankle as well as load carrying capacity free of pain.

Indication: Painful arthritis of the ankle joint occurring idiopathic or posttraumatic, resulting from rheumatoid arthritis or neuromuscular diseases. Extensive bony defects in varus or valgus ankle deformities and after failed prosthesis.

[Pedobarographic results of Girdlestone-Taylor tendon transfer in flexible small toe deformity].

Aim: The aim of the study was to analyze the biomechanical effects of flexible claw toe correction by tendon transfer with the Girdlestone-Taylor approach using dynamic pedobarography.

Material And Methods: In the study 12 patients were examined preoperatively and 12 months postoperatively. The results obtained by pedobarography 12 months postoperatively were compared with those of a healthy control group of matched age and body mass index (BMI).

Comparative study of Lapidus bunionectomy using different osteosynthesis methods.

The treatment of hallux valgus in patients with pathology of the first tarsometatarsal (TMT I) joint by fusion is an established procedure. Multiple osteosynthesis methods for the fixation of the TMT I joint are available. In comparison to the distal procedures the Lapidus bunionectomy is associated with a pseudarthrosis rate of up to 12% [9-11].

A prospective dual-energy X-ray absorptiometry study of bone remodeling after implantation of the Nanos short-stemmed prosthesis.

The aim of this study was to analyze the bone remodeling around the Nanos stem (Smith & Nephew, Marl, Germany) after primary total hip arthroplasty for coxarthrosis. In 25 patients (15 male, 10 female, mean age 59.9 years) with the diagnosis of coxarthrosis, a DEXA scan was performed immediately after surgery, 97 days (SD 6.

Is it feasible to rely on intraoperative X ray in correcting hallux valgus?

Background: The aim of the study was to prove whether the intraoperatively taken fluoroscopy pictures compared to the X rays taken 8 weeks and 3 months postoperatively picture the achieved correction reliably.

Method: In a prospective study, the pre- and postoperative standing foot X rays as well as the intraoperatively taken fluoroscopy pictures of 31 patients were analysed. The intermetatarsal angle (IMA) and the hallux valgus angle (HVA) were measured.