Publications by authors named "R Bieger"

Outcomes following total knee arthroplasty (TKA) revisions are variable, and it is hypothesized that the underlying cause of primary TKA failure impacts postoperative outcomes. This study analyzes the results of TKA revisions seven years after surgery, in relation to the etiology of primary failure and other influencing factors. A previous study conducted in 2013 examined the same cohort of patients three months after revision surgery.

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Background: Digital tools are being increasingly used worldwide in primary knee arthroplasty. This study aimed to analyze the utilization density of digital tools, the preferred alignment strategies, and the obstacles and benefits of implementing these technologies in German-speaking countries.

Materials And Methods: An online survey with 57 questions about digital tools in primary knee arthroplasty and their usage was conducted among members of the Arthroplasty Working Group (AE).

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Article Synopsis
  • Shorter hip stems like the Fitmore stem show promise in mid-term outcomes, but there's limited long-term data on their performance in total hip arthroplasties (THAs) after 10 years.
  • The study involved 100 THAs with no aseptic loosening revisions after a mean follow-up of over 11 years, noting cortical hypertrophy (CH) in 26% of cases, particularly in specific hip zones.
  • Larger stem sizes and greater axial subsidence were linked to higher CH rates; however, patients with or without CH had similar hip function scores, highlighting the need for careful patient selection and stability during surgery.
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The combination of a reduction in surgical trauma in unicondylar knee arthroplasty compared to total knee arthroplasty and the introduction of a standardised enhanced recovery concept leads to a pre-, peri- and postoperative improvement in the patient's condition, which results in a reduction of the length of stay in hospital. In healthy, motivated patients, day-case or outpatient surgical treatment is possible under these circumstances.

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Purpose: Tourniquet use during total knee arthroplasty (TKA) remains controversial. There are limited data demonstrating the effect of tourniquet use on flexion and extension gaps. The use of a tourniquet can theoretically affect the kinematics of the knee joint, specifically the extension and flexion gaps and the laxity, by mechanically compressing the soft tissues including the muscles above the knee joint.

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