Publications by authors named "Nasim Zargar"

Background: All surgical meshes entering the U.S. market have been cleared for clinical use by the 510(k) process of the Food and Drug Administration (FDA), in which devices simply require proof of "substantial equivalence" to predicate devices, without the need for clinical trials.

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Background: Retearing after rotator cuff surgery is a major clinical problem. Numerous scaffolds are being used to try to reduce retear rates. However, few have demonstrated clinical efficacy.

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Annealing, or heat treatment, has traditionally been used as a treatment to improve the strength and stiffness of electrospun materials. Understanding the extent to which annealing can improve the mechanical properties and alter the degradation rate of electrospun polydioxanone filaments could influence the range of its potential clinical applications. In this study, we investigated the effect of annealing electrospun polydioxanone filaments at varying times and temperatures and subsequently subjecting them to in vitro degradation in phosphate buffer saline for up to 6 weeks.

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The healing process of ruptured tendons is suboptimal, taking months to achieve tissue with inferior properties to healthy tendon. Mechanical loading has been shown to positively influence tendon healing. However, high frequency low magnitude (HFLM) loads, which have shown promise in maintaining healthy tendon properties, have not been studied with in vitro injury models.

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Soft tissue injuries represent a substantial and growing social and economic burden. Medical fibres are commonly used to repair these injuries during surgery. Patient's outcomes are, however, not promising with around 40% of surgical repairs failing within the first few months after surgery due to poor tissue regeneration.

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Article Synopsis
  • The main objectives of rotator cuff repair surgery are high fixation strength, mechanical stability, and effective biological healing at the tendon-to-bone interface, with new strategies focusing on improving healing rather than just scar tissue formation.
  • Single-row repair is currently the most cost-effective method for rotator cuff tears, but recent advancements in biological interventions, such as growth factors and stem cells, are showing promise for better healing outcomes.
  • While animal models have been useful in testing these new treatments, the transfer of these findings to human clinical practice remains limited, necessitating further clinical trials to assess their effectiveness and proper usage.
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