Location and magnitude of capsular injuries varies following multiple anterior dislocations of the shoulder: Implications for surgical repair
Location and magnitude of capsular injuries varies following multiple anterior dislocations of the shoulder: Implications for surgical repair
复制标题
肩关节多次前脱位后，关节囊损伤的位置和程度会有所不同：对手术修复的影响
DOI：
10.1002/jor.24860
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
A. Lin
中科院分区：
文献类型：
--
作者：
Masahito Yoshida;Tetsuya Takenaga;Calvin K. Chan;V. Musahl;R. Debski;A. Lin
关节囊损伤可能发生在多发性肩关节脱位。本研究的目的是评估多发性脱位后盂肱关节囊损伤的位置和程度。我们假设关节囊损伤的程度会增加，峰值损伤的位置会根据脱位的数量而变化。使用了7个新鲜冷冻的尸体肩关节。将7 × 11网格的应变标记物固定在前下囊上。然后将每个关节安装到六自由度机器人测试系统上。在1、2、3、4、5和10次脱位后进行标记追踪，以确定不可恢复的应变为关节囊损伤。每次脱位后，通过比较每次脱位后的应变标记位置，量化代表盂肱关节下囊不可恢复应变的最大主应变的大小。7个样本中有5个样本的不可恢复应变峰值随脱位数量的增加而增加（p = 0.0007）。不可恢复应变峰值的包囊位置随位错数量的不同而不同，且随样本的不同而不同。在后囊膜和腋前囊中发现了不可恢复的应变，与囊膜的其他区域相比，其随脱位数量增加（p = 0.001 - 0.012），最高可达16%。临床意义：虽然腋窝前囊折叠术在多发性脱位后很重要，但随着脱位数量的增加，除了适当的后囊膜移位外，可能还需要更广泛的前囊移位。
Capsular injuries can occur during multiple shoulder dislocations. The purpose of this study is to evaluate the location and magnitude of glenohumeral capsular injury following multiple dislocations. We hypothesized that the magnitude of capsular injury would increase and the location of peak injury would vary depending on the number of dislocations. Seven fresh‐frozen cadaveric shoulders were used. A 7 × 11 grid of strain markers was affixed to the anteroinferior capsule. Each joint was then mounted to a six degree‐freedom robotic testing system. Marker tracking was performed following 1, 2, 3, 4, 5, and 10 dislocations to determine the nonrecoverable strain as capsular injury. Following each dislocation, the magnitude of the maximum principal strain representing the nonrecoverable strain in the inferior glenohumeral capsule was quantified by comparing the strain marker positions following each dislocation. The peak value of nonrecoverable strain statistically increased with the number of dislocations in five of seven specimens (p = .0007). The capsular location that had the peak value of nonrecoverable strain varied according to the number of dislocations, and from specimen to specimen. The nonrecoverable strain was identified in the posterior capsule and anterior axillary pouch, which increased with the number of dislocations compared to the other regions of the capsule (p = .001–.012) by up to 16%. Clinical significance: While plication of the anterior axillary pouch is important following multiple dislocations, a more extensive anterior capsular shift may be necessary with an increased number of dislocations in addition to a posterior capsular shift when appropriate.
盂肱关节囊腋囊的材料特性：各向同性材料对称性是否合适？
DOI：
10.1115/1.3005169
发表时间：
2009
期刊：
Journal of biomechanical engineering
影响因子：
--
作者：
Rainis,EricJ;Maas,SteveA;Henninger,HeathB;McMahon,PatrickJ;Weiss,JeffreyA;Debski,RichardE
通讯作者：
Debski,RichardE