中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (17): 2664-2668.doi: 10.12307/2023.432

• 肌肉肌腱韧带组织构建 tissue construction of the muscle, tendon and ligament • 上一篇    

跟腱全切断联合皮肤烫伤与单纯跟腱全切断诱导小鼠创伤性异位骨化的比较

王  正1,陈泓书2,易新泽宇1,李宗焕1   

  1. 1武汉大学中南医院创伤与显微骨科,湖北省武汉市  430071;2黄州总医院骨科,湖北省黄冈市  438000
  • 收稿日期:2022-06-17 接受日期:2022-07-21 出版日期:2023-06-18 发布日期:2022-10-24
  • 通讯作者: 李宗焕,博士,副主任医师,武汉大学中南医院创伤与显微骨科,湖北省武汉市 430071
  • 作者简介:王正,男,1994年生,河南省信阳市人,汉族,武汉大学中南医院创伤与显微骨科在读博士,主要从事创伤与显微修复研究。
  • 基金资助:
    武汉大学中南医院优势学科项目(XKJS202006),项目负责人:李宗焕

Comparative study of traumatic heterotopic ossification in mice induced by Achilles tenotomy combined with skin burn injury and single Achilles tenotomy

Wang Zheng1, Chen Hongshu2, Yi Xinzeyu1, Li Zonghuan1   

  1. 1Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China; 2Department of Orthopedics, Huangzhou General Hospital, Huanggang 438000, Hubei Province, China
  • Received:2022-06-17 Accepted:2022-07-21 Online:2023-06-18 Published:2022-10-24
  • Contact: Li Zonghuan, MD, Associate chief physician, Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
  • About author:Wang Zheng, MD candidate, Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
  • Supported by:
    the Superior Discipline Project of Zhongnan Hospital of Wuhan University, No. XKJS202006 (to LZH)

摘要:

文题释义:
异位骨化:是指在肌肉、肌腱、韧带等软组织内形成骨组织的一种病理现象,多发生于骨折、关节置换、脊髓损伤、脑损伤等之后,好发于髋、肘和膝关节周围。 
跟腱:哺乳动物小腿腓肠肌和比目鱼肌的肌腹下端移行的腱性结构,止于跟骨结节,是人体最粗大的肌腱,对机体行走、站立和维持平衡有着重要的意义。

背景:目前创伤性异位骨化动物模型主要为跟腱全切断模型,但异位骨形成时间较长、体积较小,并且无法准确地再现临床中大多数创伤性异位骨化病例的全身炎症状态。
目的:验证跟腱全切断联合皮肤烫伤建立创伤性异位骨化动物模型的有效性,并将其与单纯跟腱全切断对比,评价两种方法的实用性。
方法:利用随机数字表法,将40只雄性C57BL/6小鼠随机分为2组,对照组(n=20)进行单纯跟腱全切断手术,实验组(n=20)进行跟腱全切断手术+背部30%皮肤烫伤处理。记录两组小鼠存活率和跟腱部位手术伤口愈合情况,以及实验组小鼠背部烫伤皮肤恢复情况。术后8周行跟腱micro-CT检查及Masson 染色,观察手术部位异位骨形成情况。
结果与结论:①术后两组小鼠均无死亡,伤口愈合良好,实验组小鼠烫伤皮肤恢复良好;②micro-CT显示,实验组小鼠全部出现创伤性异位骨化,跟腱部位可见明显的类圆形高密度影,异位骨体积为(2.72±0.04) mm3;对照组仅17只小鼠跟腱部位出现创伤性异位骨化,异位骨体积为(0.65±0.08) mm3;两组小鼠异位骨体积比较差异有显著性意义(P < 0.05);③Masson 染色显示,两组小鼠形成的异位骨均具有骨小梁和骨髓结构,实验组异位骨面积大于对照组(P < 0.05);④结果表明,跟腱全切断联合皮肤烫伤能有效建立小鼠创伤性异位骨化模型,与单纯跟健全切断相比,该方法不仅能较早诱导小鼠创伤性异位骨化,且成功率更高,所形成的异位骨体积更大,是动物创伤性异位骨化模型建立的理想方法。
https://orcid.org/0000-0002-1176-7659(王正)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 创伤性异位骨化, 动物模型, 跟腱切断, 皮肤烫伤, 炎症

Abstract: BACKGROUND: At present, Achilles tenotomy model is an animal model mainly used for traumatic heterotopic ossification. However, this method requires a long time to form ectopic bone, and the size of the formed ectopic bone is always small. In addition, this method cannot accurately reproduce the systemic inflammatory state of most traumatic heterotopic ossification cases in clinic practice.
OBJECTIVE: To verify the validity of the animal model of traumatic heterotopic ossification induced by Achilles tenotomy combined with skin burn injury, to compare this approach with single Achilles tenotomy, and to evaluate the practicability of the two methods. 
METHODS: Forty male C57BL/6 mice were randomly divided into two groups: Achilles tenotomy group (control group, n=20) and Achilles tenotomy+30% skin scald on the back group (experimental group, n=20). The survival rate and healing of surgical incisions of the mice in the two groups were recorded. Survival rate and wound healing in the two groups as well as skin recovery of burn injury in the experimental group were recorded. Micro-CT examination and Masson staining of the Achilles tendon was performed 8 weeks after surgery to observe the ectopic bone at the surgical site. Formation of ectopic bone was also observed in the two groups. 
RESULTS AND CONCLUSION: There was no death and wound infection in the two groups. The skin burn injury in the experimental group recovered well without ulceration. Micro-CT findings indicated that all mice in the experimental group developed traumatic heterotopic ossification, with obvious circular high-density shadow at the surgical site, and the volume of ectopic bone was (2.72±0.04) mm3. In contrast, only 17 mice developed traumatic heterotopic ossification in the control group, and the volume of ectopic bone was (0.65±0.08) mm3. There was a significant difference in the volume of ectopic bone between the two groups (P < 0.05). Masson staining showed that ectopic bone in both groups had bone trabecular and bone marrow structures, but the area of ectopic bone in the experimental group was significantly larger than that in the control group (P < 0.05). To conclude, Achilles tenotomy combined with skin burn injury can effectively induce traumatic heterotopic ossification earlier than single Achilles tenotomy in mice. This combination method has a higher successful rate and can produce larger size of ectopic bone, which can be an ideal method to establish an animal model of traumatic heterotopic ossification.

Key words: traumatic heterotopic ossification, animal model, Achilles tenotomy, burn injury, inflammation

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