Tendon tearing

  • 文章类型: Journal Article
    尽管双排缝线锚定(DRSA)技术已被证明是成功的,一种尚未解决的反复出现的失败模式是缝线撕裂肌腱。这项研究旨在通过结合撕裂停止元件来解决缝合线撕裂问题。作者假设,与更传统的技术相比,Rip-Stop小组将表现出更大的力量。
    本研究使用了12只配对的尸体足(n=24)。从每对中分配一个样本,以使用4.75mm无结锚(n=12)进行标准的双排(SDR)跟腱修复。对照组的匹配侧分为2个DRSA桥组:带有3.9mm锚的改良双排(MDR)桥或带有软近端锚和3.9mm的双排(RS-DR)桥修复远端行。在中立位置,标本经历了1000次循环(20-100N),然后负载到失败。位移,刚度,极限载荷,并记录故障模式。
    RS-DR的初始位移值最低,其次是SDR和MDR(1.3±0.4、2.7±1.4和3.2±1.3mm,分别)。当比较RS-DR与MDR的初始位移时检测到显著性(P=.038)。RS-DR的循环位移最低,其次是MDR和SDR(1.6±0.9,2.2±1.1和4.5±3.2mm,分别)。RS-DR和MDR的循环刚度相似(89.1±24.6和81.9±5.6N/mm,分别)。RS-DR极限载荷(1116.8±405.7N)大于SDR(465.6±352.7,P=.003)。
    与其他组相比,RS-DR修复的标本显示出位移值降低,极限载荷和刚度增加。此尸体模型的结果表明,在DRSA跟腱修复中添加切块比锚大小更有影响力。局限性包括这是一项零时生物力学研究,这不能模拟术后愈合和恢复期间的修复性能。
    跟腱修复的止裂技术可有效改善动态力学特性,并可减轻患者队列中通过肌腱的缝线撕裂。
    UNASSIGNED: Although double-row suture-anchored (DRSA) techniques for Achilles insertional tendinosis has proven successful, a reoccurring failure mode not yet addressed is suture tearing through the tendon. This study aims to address suture tearing by incorporating a rip-stop element. Authors hypothesized that the Rip-Stop group would demonstrate increased strength compared with more traditional techniques.
    UNASSIGNED: 12 paired cadaveric feet were used in this study (n = 24). One sample from each pair was assigned to receive the standard double-row (SDR) Achilles repair with 4.75-mm knotless anchors (n = 12). The control\'s matched sides were divided between 2 DRSA bridge groups: modified double-row (MDR) bridge with 3.9-mm anchors or rip-stop double-row (RS-DR) bridge repair with soft proximal anchors and 3.9-mm anchored distal row. In neutral position, specimens underwent 1000 cycles (20-100 N) followed by load to failure. Displacements, stiffness, ultimate load, and failure mode were recorded.
    UNASSIGNED: RS-DR had the lowest initial displacement values followed by SDR and MDR (1.3 ± 0.4, 2.7 ± 1.4, and 3.2 ± 1.3 mm, respectively). Significance was detected when comparing initial displacement of RS-DR to MDR (P = .038). Cyclic displacement was lowest for RS-DR, followed by MDR and SDR (1.6 ± 0.9, 2.2 ± 1.1, and 4.5 ± 3.2 mm, respectively). Cyclic stiffness was similar for RS-DR and MDR (89.1 ± 24.6 and 81.9 ± 5.6 N/mm, respectively). RS-DR ultimate load (1116.8 ± 405.7 N) was statistically greater than SDR (465.6 ± 352.7, P = .003).
    UNASSIGNED: RS-DR-repaired specimens demonstrated a decrease in displacement values and increased ultimate load and stiffness when compared to other groups. Results of this cadaveric model suggest that the addition of a rip-stop to DRSA Achilles repair is more impactful than anchor size. Limitations include that this was a time-zero biomechanical study, which cannot simulate the performance of the repairs during postoperative healing and recovery.
    UNASSIGNED: A rip-stop technique for Achilles repair effectively improves dynamic mechanical characteristics and may mitigate suture tearing through tendon in a patient cohort.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    对于肩胛骨下肌腱撕裂(SCT),已经提出了几种分类;然而,骨科医生在这些病变的诊断和治疗方面仍未达成一致.区分各种泪液模式并将其分类具有一定的预后意义可能有助于手术外科医生计划适当的治疗。
    本研究的目的是概述有关SCT分类和治疗的现有文献,并在肩和肘外科医生中进行调查,以确定有关这些损伤的手术决策的方法。
    在这篇系统综述中,我们分析了12篇有关肩胛骨下肌腱撕裂分类的文章,以及对治疗计划和结局的影响.此外,4名肩胛骨下修复手术的国际专家参与了问卷形式的开发,该问卷形式分发给1161名ASES成员。一百六十五名外科医生参加并选择他们是否同意,不同意,或对包括适应症/禁忌症在内的4个部分中的32个陈述中的每个陈述都弃权,治疗计划,以及影响调查结果的因素。
    分类标准变化很大,对泪液形态的建议和描述不同;大多数基于泪液大小,相关肩部病理学,或较小的结节足迹暴露。考虑到多种分类系统和关于SCT管理的总体协议较差,我们的研究发现,最广泛认同(超过80%)的陈述包括早期手术建议用于创伤性SCT,与急性冈上肌撕裂相关的慢性退行性SCT(无脂肪浸润)是修复的候选人,肩袖关节病是SCT修复的禁忌证。
    我们的研究能够确定患者和泪液的特征,这些特征在外科医生的治疗中得到了很好的认同。Lafosse分类通常被广泛接受;然而,它需要通过一些补充来改进。需要外科医生之间继续合作,以建立可接受且广泛适用的分类系统来管理这些损伤。
    UNASSIGNED: Several classifications have been proposed for subscapularis tendon tearing (SCTs); however, there remains a poor agreement between orthopedic surgeons regarding the diagnosis and management of these lesions. Distinguishing the various tear patterns and classifying them with some prognostic significance may aid the operating surgeon in planning appropriate treatment.
    UNASSIGNED: The purpose of this study was to outline the current literature regarding SCT classification and treatment and conduct a survey among shoulder and elbow surgeons to identify the approaches regarding surgical decision-making for these injuries.
    UNASSIGNED: In this systematic review, we analyzed 12 articles regarding the subscapularis tendon tear classification and implications regarding treatment plans and outcomes. In addition, 4 international experts in subscapularis repair surgery participated in the development of a questionnaire form that was distributed to 1161 ASES members. One hundred sixty five surgeons participated and chose whether they agree, disagree, or abstain for each of the 32 statements in 4 parts including indications/contraindications, treatment plan, and the factors affecting outcomes in the survey.
    UNASSIGNED: Classification criteria were extremely variable with differing recommendations and descriptions of tear morphology; most were based on tear size, associated shoulder pathology, or lesser tuberosity footprint exposure. Considering the multiple classification systems and the overall poor agreement regarding SCT management, our study found that the most widely agreed upon (more than 80%) statements included early surgery is advised for traumatic SCT, chronic degenerative SCT (without fatty infiltration) associated with acute supraspinatus tear is a candidate for repair, and rotator cuff arthropathy is a contraindication for SCT repair.
    UNASSIGNED: Our study was able to identify both patient and tear characteristics that are well agreed upon among surgeons in the treatment of these injuries. Lafosse classification is generally widely accepted; however, it needs to be improved by some additions. Continued collaboration among surgeons is needed to establish an acceptable and broadly applicable classification system for the management of these injuries.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号