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Rat-tail replantation model.

H Wang1, Y Gu, Z Dong

  • 1Department of Hand Surgery, Hua Shan Hospital, Shanghai Medical University, China.

Journal of Reconstructive Microsurgery
|May 5, 1999
PubMed
Summary
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This study demonstrates a reliable rat-tail replantation model for microvascular anastomosis research. The procedure ensures tail viability and vessel patency, offering a reproducible experimental approach.

Area of Science:

  • Veterinary Surgery
  • Microsurgery
  • Experimental Surgery

Background:

  • Microvascular anastomosis is crucial for tissue replantation.
  • Developing reliable animal models is essential for surgical innovation.
  • Rat-tail models offer a platform for studying microvascular techniques.

Purpose of the Study:

  • To evaluate the reliability and reproducibility of a rat-tail replantation model.
  • To detail the critical steps for successful microvascular anastomosis in rat tails.
  • To establish a viable experimental model for microsurgical research.

Main Methods:

  • Complete amputation of rat tails (3-6 cm distal to base).
  • Sequential replantation: vertebral fixation, tendon repair, arterial and venous anastomosis, skin closure.

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  • Postoperative monitoring (14 days) for viability, color, capillary refill, and wound healing.
  • Vessel patency assessment using ultrasound Doppler and angiography.

    • Main Results:

    • All replanted tails exhibited viability, normal capillary refill, and healthy appearance.
    • Complete survival of the replanted tails was achieved.
    • Doppler imaging and angiography confirmed successful vessel anastomosis and patency.

    Conclusions:

    • Rat-tail replantation is a reliable and reproducible experimental model.
    • The described procedure facilitates successful microvascular anastomosis.
    • This model is suitable for advancing research in microsurgery and tissue replantation.