[Rheumatoid arthritis : These dermatoses lead you to the diagnosis].

Background: Rheumatoid arthritis is one of the most common autoimmune disorders. In addition to chronic arthritis, rheumatoid arthritis may present a variety of extra-articular manifestations, most commonly of the skin.

Objectives: Cutaneous manifestations associated with rheumatoid arthritis can be diverse, both specific and nonspecific.

Content and value of rehabilitation in dermatology.

The therapy of chronic skin diseases is challenging for both the dermatologist and the patient. Current standards of therapy and individual circumstances of the patient have to be considered. Furthermore, chronic skin diseases are often associated with comorbidities that require treatment adapted to the individual.

Diagnostic value of the CD 15 focus score in two-stage revision arthroplasty of periprosthetic joint infections : High specificity in diagnosing infect eradication.

Introduction: The purpose of this study is to use the CD15 focus score (FS) to determine the sensitivity and specificity of bacterial infection persistence in spacer-based two-stage revision arthroplasty.

Methods: The analysis comprises 112 cases that were subjected to revision due to the presence of infection upon replacement of a joint endoprosthesis. The histopathological data were collected in accordance with the synovial-like interface membrane (SLIM) classification and the CD15-FS and correlated with the microbiological data (MD).

[Periprosthetic and interprothetic fractures in patients with rheumatism : Characteristics of conservative and surgical treatment].

Background: Periprosthetic fractures in patients with underlying rheumatic diseases can be a special challenge depending on the extent, bone quality and septic complications.

Objectives: Does the underlying rheumatic disease influence the treatment strategy for periprosthetic fractures? What effect do the many extra-articular and local joint-specific rheumatic involvement patterns have on the surgical strategy? How should the potential immunosuppressive side effects of continuously new biologicals be perioperatively taken into account? How can less conspicuous infections under immunosuppression be recognized clinically and using laboratory parameters?

Material And Methods: Rheumatic disease manifestations that must be perioperatively considered are presented based on the literature. The results are supplemented by many years of experience in a hospital with more than 1500 operations on patients with an underlying rheumatic disease.

[Complications in orthopedic rheumatology-characteristics of operative procedures].

The introduction of biologics has led to a great improvement in the treatment options for inflammatory rheumatic diseases. Nevertheless, surgical interventions are still necessary in many patients but a change in surgical indications could be observed. The previously predominant synovectomy of inflamed rheumatic joints is now reduced to a few so-called rebellious joints with persistent inflammation.

[Arthur Vick Prize 2017 of the German Society of Orthopaedic Rheumatology].

The German Society of Orthopaedic Rheumatology (DGORh) honored Prof. Dr. med.

Short stem total hip arthroplasty in patients with rheumatoid arthritis.

Total hip arthroplasty (THA) has proven successful in patients with rheumatoid arthritis (RA). Patients with RA often require multiple revisions, and bone conservation is mandatory. A variety of short stems is currently available with mid-term results for osteoarthritis.

[Periprosthetic infections in systemic inflammatory rheumatic disease. Review article on diagnostics and therapy].

Background: Patients with an inflammatory disease have an elevated risk for periprosthetic joint infections due to impairment of the immune system caused by the disease itself in combination with disease-modifying antirheumatic drugs (DMARD). These infections can cause life-threatening sepsis. Unfortunately recommendations on the diagnostics and treatment are mostly based on studies with a level of evidence grade IV or V.

[Histopathology and microbiology of joint infections: extension of diagnostic safety in patients with chronic polyarthritis].

Background: It can be difficult to distinguish between synovitis due to rheumatism and synovitis due to a bacterial infection. Microbiological detection of bacteria is not always successful and the clinical significance of low virulent bacteria often remains uncertain. Therefore, the histopathological finding of inflammatory reactions is very important.

[Purulent gonarthritis resulting from H1N1 viral pneumonia].

No articles on orthopedic complications of pneumonia due to influenza A H1N1 virus have yet been published. A 44-year-old male patient was hospitalized due to the suspicion of an infected knee. During arthroscopy beta-hemolytic Streptococcus group A and Acinetobacter were found and the histopathological diagnosis of an infectious bacterial synovialitis was made.

[Joint endoprosthesis pathology. Histopathological diagnostics and classification].

Prosthesis durability has steadily increased with high 10-year rates of 88-95%. However, four pathogenetic groups of diseases can decrease prosthesis durability: (1) periprosthetic wear particle disease (aseptic loosening) (2) bacterial infection (septic loosening) (3) periprosthetic ossification, and (4) arthrofibrosis. The histopathological "extended consensus classification of periprosthetic membranes" includes four types of membranes, arthrofibrosis, and osseous diseases of endoprosthetics: The four types of neosynovia are: wear particle-induced type (type I), mean prosthesis durability (MPD) in years 12.