13 results match your criteria: "German Institute for Cell and Tissue Replacement (DIZG[Affiliation]"

Treating severe dermal disruptions often presents significant challenges. Recent advancements have explored biological cell sprays as a promising treatment, but their success hinges on efficient cell delivery and complete wound coverage. This requires a good spray distribution with a small droplet size, high particle number, and ample surface coverage.

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Background: The use of allografts and autografts has been met with mixed views on whether allografts are a suitable alternative to autografts.

Question: We aimed to investigate if chemically sterilized allografts show similar rerupture rates to those reported in the literature for allografts and autografts in anterior (ACL) and posterior cruciate ligaments (PCL) and complex knee surgery.

Materials And Methods: Retrospective data on knee reconstructions performed between 2011 and 2015 with tendon/ligamnet allografts sterilized with peracetic acid were collected in the form of a questionnaire.

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Allografts for partial meniscus repair: an and meniscus culture study.

Front Bioeng Biotechnol

October 2023

Experimental Trauma Surgery, Department of Trauma, Hand and Reconstructive Surgery, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany.

The purpose of this study was to evaluate the treatment potential of a human-derived demineralized scaffold, Spongioflex (SPX), in partial meniscal lesions by employing models. In the first step, the differentiation potential of human meniscal cells (MCs) was investigated. In the next step, the ability of SPX to accommodate and support the adherence and/or growth of MCs while maintaining their fibroblastic/chondrocytic properties was studied.

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Background: The purpose of this retrospective study was to analyze whether chemically sterilized tendon allografts perform as well as other non-sterilized allografts and autografts as described in the literature for anatomical acromioclavicular joint stabilization for the treatment of Rockwood III-V. Allografts are still described as a factor for higher re-rupture rates.

Methods: Retrospective data were collected from 21 acromioclavicular joint stabilizations performed by a single surgeon and performed between 2011 and 2014 using sterilized semitendinosus allografts.

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Bone defects and infections pose significant challenges for treatment, requiring a comprehensive approach for prevention and treatment. Thus, this study sought to evaluate the efficacy of various bone allografts in the absorption and release of antibiotics. A specially designed high-absorbency, high-surface-area carrier graft composed of human demineralized cortical fibers and granulated cancellous bone (fibrous graft) was compared to different human bone allograft types.

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The classic two-stage masquelet technique is an effective procedure for the treatment of large bone defects. Our group recently showed that one surgery could be saved by using a decellularized dermis membrane (DCD, Epiflex, DIZG). In addition, studies with bone substitute materials for defect filling show that it also appears possible to dispense with the removal of syngeneic cancellous bone (SCB), which is fraught with complications.

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Allografts: expanding the surgeon's armamentarium.

Cell Tissue Bank

March 2023

Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.

In Germany, bone allografts are widely used and their application in clinics has increased over the years. Successful use of allografts depends on many factors such as the procurement, processing, sterilization and the surgeon's surgical experience. Tissue banks have provided safe and sterile allografts for decades ranging from hard to soft tissue.

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The Masquelet technique is used to treat large bone defects; it is a two-stage procedure based on an induced membrane. To improve the induced membrane process, demineralized bone matrix in granular (GDBM) and fibrous form (f-DBM) was tested with and without bone marrow mononuclear cells (BMC) as filling of the membrane against the gold standard filling with syngeneic cancellous bone (SCB). A total of 65 male Sprague-Dawley rats obtained a 5 mm femoral defect.

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Regeneration of large bone defects is a major objective in trauma surgery. Bone marrow mononuclear cell (BMC)-supported bone healing was shown to be efficient after immobilization on a scaffold. We hypothesized that fibrous demineralized bone matrix (DBM) in various forms with BMCs is superior to granular DBM.

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Purpose: Meniscus allograft transplantation (MAT) is a possible treatment for patients suffering with pain after meniscectomy. Here, peracetic acid (PAA) sterilised meniscus transplants were investigated on whether they would provide an adequate alternative to fresh-frozen transplants in their viscoelastic and mechanical properties.

Methods: In this analysis, 31 menisci donors (26 male and 5 female) were included.

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Article Synopsis
  • * f-DBM was tested on rats with a critical-size femoral bone defect, showing no significant harmful effects on liver or kidney, and promoting good bone healing over a two-month period.
  • * The research found no major immune reactions or toxicity associated with f-DBM, indicating its potential safety as a bone graft material.
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Article Synopsis
  • The induced membrane technique treats large bone defects in a two-step surgery involving the creation of a membrane around a spacer, followed by bone filling after some healing time.
  • This study compares the effectiveness of human acellular dermis (hADM) with the traditional induced membrane method and a control group without membrane coverage in a rat model.
  • Results showed that both membrane groups achieved significant bone load and bridging compared to the control group, indicating that hADM provides similar healing results and could potentially reduce treatment time for large bone defects.
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