The alternative model of silicone for experimental simulation of suture of living tissue in the teaching of surgical technique

The research and development of new implant models modifying the micro and macro design has increased significantly in the last decades. With the advancement of knowledge about the biological behavior of these materials when implanted in living tissue, a great search for morphological changes at macrogeometric, microgeometric and even nanogeometric levels was started, to accelerate the process of osseointegration of implants, reducing the time for the rehabilitation treatment. This chapter will seek to demonstrate, through scientific evidence, the potential effect of the morphological characteristics of implants on osseointegration. Modifications in the surface treatment of implants will be discussed to improve the osseointegration process in terms of quality and time reduction, changes in the surgical technique used for the osteotomy of the implant installation site, and macrogeometric changes in the shape of the implant body.

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The safety of surgical technique for ileostomy and colostomy in preventing parastomal hernias: an in vitro experimental simulation study

Patient Safety in Surgery ◽

10.1186/s13037-021-00302-9 ◽

2021 ◽

Vol 15 (1) ◽

Author(s):

Peter C. Ambe

Keyword(s):

Surgical Technique ◽

Simulation Study ◽

Parastomal Hernia ◽

Experimental Simulation ◽

Exit Site ◽

Pressure Development ◽

Abdominal Fascia ◽

The Creation ◽

Incision Technique

Abstract Background Parastomal hernia (PH) is a common long-term complication in persons with an ostomy. Although the cause of PH may be multifactorial, the surgical technique employed for the creation of a stoma may be a risk factor for the development of PH. The traditional technique of cruciate fascia incision may predispose to increased pressure zones at the ostomy exit site, thereby increasing the risk of PH. A circular excision of the abdominal fascia at the ostomy exit site enables a uniform pressure distribution, thereby reducing the risk of PH. This hypothesis was tested in this in vitro experimental simulation study. Methods The effect of the surgical technique for ostomy creation on the risk of PH development was investigated in this in vitro experimental simulation study. The pressure development at the stoma site was compared for the traditional cruciate incision vs. circular fascia excision. Results The pressure at the ostomy site was about four-times higher in the tradition cruciate incision technique compared to the circular excision technique. This finding was independent of unilateral (e.g. peritoneal) pressure application. Conclusion The main finding from this study suggests that the traditional cruciate incision of the abdominal fascia for the creation of an intestinal ostomy predisposes to increased pressures at the ostomy site, thus increasing the risk of PH. This effect is not seen in the experimental setting following a circular excision of the fascia. Thus, this surgical aspect may be adopted as a possible means of reducing the risk of parastomal hernia in patients undergoing ostomy surgery.

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Pitfalls and problems encountered in rat model sciatic nerve surgery

Romanian Neurosurgery ◽

10.33962/roneuro-2019-064 ◽

2019 ◽

pp. 396-399

Author(s):

Marin Andrei ◽

Mihai Ruxandra Ioana ◽

Marin Georgiana Gabriela

Keyword(s):

Sciatic Nerve ◽

Surgical Technique ◽

Peripheral Nerve ◽

Nerve Regeneration ◽

Experimental Model ◽

Rat Model ◽

Peripheral Nerve Injury ◽

Living Tissue ◽

Nerve Surgery

When learning the basics of microsurgery, a trainee must be equipped with patience and perseverance in order to evolve. One must have the ground knowledge when it comes to peripheral nerve injury and nerve regeneration process in order to fully understand that the technique is vital for the outcome and final results. Furthermore, a trainee must practice on non-living tissue before performing successful in vivo operations and even in this case, one may be confronted with problems regarding the surgical technique. [1] The following article aims to reveal the main problems/mistakes when performing sciatic nerve surgery in an in vivo experimental model and the solutions for these problems.

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