A Mouse Model of Ankle-Subtalar Complex Joint Instability

Shuo Wang; Peixin Liu; Chunzhuo Hua; Hongtao Zhang; Jia Yu

doi:10.3791/64481

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Biology

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A Mouse Model of Ankle-Subtalar Complex Joint Instability

踝距下复杂关节不稳定的小鼠模型

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09:14 min

October 28, 2022

DOI: 10.3791/64481-v

Shuo Wang*^1,2, Peixin Liu*^1,2, Chunzhuo Hua^1,2, Hongtao Zhang^1,2, Jia Yu^1,2

¹Department of Orthopaedics,The First Affiliated Hospital of Soochow University, ²Orthopaedic Institute,Soochow University

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Overview

The study focuses on the ankle-subtalar complex joint (ASCJ), essential for balance control during daily activities. It presents a mouse model of ligament transection-induced instability in the ASCJ, providing insights for clinical foot disease research.

Key Study Components

Research Area

Orthopedic research
Biomechanics
Animal models for foot diseases

Background

The ASCJ's role in foot stability and injury response.
Importance of accurate animal models for clinical relevance.
Understanding sports-related joint instability.

Methods Used

Mouse model of ligament transection
Balance and gait training assessments
Histological examination of joint architecture

Main Results

Successful establishment of a clinically relevant ASCJ instability model.
Assessment of gait performance and balance post-surgery.
Histological verification of joint structure post-dissection.

Conclusions

The model enhances understanding of foot joint instability.
It provides a platform for studying diagnosis and treatment strategies for foot diseases.

Frequently Asked Questions

What is the ASCJ and why is it important?

The ankle-subtalar complex joint (ASCJ) is critical for maintaining balance and stability during movement.

How does ligament transection affect the ASCJ?

Ligament transection leads to instability in the ASCJ, affecting gait and balance.

What methods were used to assess the animals in this study?

The study employed balance beam tests and gait training to evaluate animal performance.

Why is a mouse model used for studying foot diseases?

Mice provide a controlled environment suitable for replicating human foot conditions and studying pathophysiological mechanisms.

What are the implications of this research?

This research aims to inform clinical approaches to diagnosing and treating foot diseases stemming from joint instability.

How does this model contribute to future research?

It allows for further investigation into mechanistic aspects of ankle instability and potential therapeutic interventions.

What histological assessments were performed in the study?

Histological examinations were conducted to observe structural changes in the ASCJ post-surgery, verifying joint integrity.

踝距下复合关节（ASCJ）是足部的核心，在日常活动中起着关键作用。运动损伤通常会导致该关节不稳定。在这里，我们描述了韧带横断诱导的ASCJ不稳定性的小鼠模型。

ASCJ无能小鼠模型的成功建立扩展了简单的踝关节无能动物模型，为临床足部疾病的研究提供了新的概念。我们建立了更符合实际临床情况的动物模型，可用于足部疾病诊断和治疗的进一步研究。实验前一周，对小鼠进行平衡木和步态训练，从平衡木或U形管的一端到另一端，不停地进行。

麻醉并去除小鼠右后肢踝关节上的毛发后，用碘拭子对暴露的皮肤进行消毒。使用无菌手术垫将小鼠转移到显微外科动物手术室。对于颈横韧带和距腓前韧带组，用手术刀在右踝关节上方的皮肤上做一个 7 毫米的斜向下纵向切口。

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