关于肱三头肌的插入点有什么新的发现吗？
Is there something new regarding triceps brachii muscle insertion?
作者信息
Akamatsu Flávia Emi, Negrão José Renato, Rodrigues Marcelo Bordalo, Itezerote Ana Maria, Saleh Samir Omar, Hojaij Flávio, Andrade Mauro, Jacomo Alfredo Luiz
机构信息
PhD, Department of Surgery, Laboratory of Medical Research 02 - Division of Human Structural Topography, Faculdade de Medicina, Universidade de São Paulo (FMUSP), Brazil. Intellectual and scientific content of the study, acquisition of data, technical procedures, manuscript writing, final approval.
MD, Radiology Institute (INRAD), Clinics Hospital, FMUSP, Sao Paulo-SP, Brazil. Design, intellectual and scientific content of the study; acquisition of data; technical procedures; manuscript writing; final approval.
出版信息
Acta Cir Bras. 2020 Nov 23;35(10):e202001007. doi: 10.1590/s0102-865020200100000007. eCollection 2020.
PURPOSE
Previous studies have questioned whether the triceps brachii muscle tendon (TBMT) has a double or single insertion on the ulna. Aiming to provide an answer, we describe the anatomy of the TBMT and review a magnetic resonance imaging (MRI) series of the elbow.
METHODS
Forty-one elbows were dissected to assess the details of the triceps brachii insertion. Elbow plastination slices were analyzed to determine whether there was a space on the TBMT. Magnetic resonance imaging from the records of the authors were also obtained to demonstrate the appearance of the pre-tricipital space on MRI.
RESULTS
A virtual space on the medial aspect near the TBTM insertion site in the olecranon was consistently found on anatomic dissections. It was a distal pre-tricipital space. Magnetic resonance imaging demonstrated the appearance of the pre-tricipital space on MRI, and its extension was measured longitudinally either in elbow flexion or extension. There was no statistically significant difference between the measurements of this space in the right and left elbows or between flexion and extension (p > 0.05). The coefficient of variation was <10% for all measurements.
CONCLUSION
Knowledge of this structure may be essential to avoid incorrect diagnosis and unnecessary therapeutic interventions.
目的
以往的研究对肱三头肌肌腱（TBMT）在尺骨上是双附着还是单附着提出了疑问。为了给出答案，我们描述了TBMT的解剖结构，并回顾了一系列肘部的磁共振成像（MRI）。
方法
解剖41个肘部以评估肱三头肌附着的细节。分析肘部塑化切片以确定TBMT上是否存在间隙。还获取了作者记录中的磁共振成像，以展示MRI上肱三头肌前间隙的表现。
结果
在解剖过程中，在鹰嘴处TBMT附着点附近的内侧始终发现一个虚拟间隙。它是一个肱三头肌前远端间隙。磁共振成像显示了MRI上肱三头肌前间隙的表现，并在肘部屈曲或伸展时纵向测量了其延伸情况。该间隙在左右肘部的测量值之间或屈曲与伸展之间均无统计学显著差异（p>0.05）。所有测量的变异系数<10%。
结论
了解这一结构对于避免错误诊断和不必要的治疗干预可能至关重要。
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