Open AccessJournal Article
Proximal biceps tendon--a biomechanical analysis of the stability at the bicipital groove.
Young W. Kwon,Hurd J,Yeager K,Charbel Ishak,Peter S. Walker,Khan S,Bosco Ja rd,Laith M. Jazrawi +7 more
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TL;DR: The preliminary data suggest that, of the three tested soft tissue structures, the subscapularis tendon is the most important stabilizer of the proximal biceps and that clinically significant lesions of the proxy biceps tendon may be associated with a defect in this tendon.
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Abstract: The subscapularis tendon, coracohumeral ligament, and transverse humeral ligament are all believed to contribute to biceps tendon stability within the bicipital groove. In order to examine the relative contribution of these soft tissue structures to proximal biceps tendon stability, 11 fresh frozen cadaveric shoulder specimens were prepared and mounted onto a custom jig. A three-dimensional digitizer was utilized to record biceps tendon excursion in various shoulder positions. In sequential order, these structures were then sectioned, and biceps tendon excursion was again recorded. We found that sectioning of the subscapularis tendon significantly increased biceps tendon excursion, compared to intact specimens (8.1 +/- 4.1 mm vs. 4.3 +/- 3.6 mm; p < 0.006). In contrast, isolated sectioning of the transverse humeral ligament or the coracohumeral ligament did not significantly increase biceps excursion (5.4 +/- 2.5 mm, p = 0.26; 5.6 +/- 1.3 mm, p = 0.24). When two structures were sectioned, significant excursion in the biceps tendon only occurred in specimens where the subscapularis tendon was one of the sectioned structures. The preliminary data suggest that, of the three tested soft tissue structures, the subscapularis tendon is the most important stabilizer of the proximal biceps and that clinically significant lesions of the proximal biceps tendon may be associated with a defect in the subscapularis tendon.
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Citations
The rotator interval and long head biceps tendon: anatomy, function, pathology, and magnetic resonance imaging.
TL;DR: A better understanding of rotator interval anatomy and function will lead to improved treatment of rotators interval abnormalities, and guide the indications for imaging and surgical intervention.
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Impact of shoulder, elbow and forearm position on biceps tendon excursion: A cadaveric study.
TL;DR: In this article, the authors investigated the long head biceps tendon (LHBT) excursion that occurs at various positions of the upper limb during tendon stabilizing procedures and hypothesized that the excursion occurs at different positions of upper limb.
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Ultrasound and the Biceps Tendon: Diagnostic and Therapeutic Benefits
Ashley J. Bassett,Levon N. Nazarian,Michael G. Ciccotti +2 more
- 01 Jan 2021
TL;DR: The biceps brachii is a powerful elbow flexor and forearm supinator composed of two distinct heads and three tendons that plays a pivotal role in shoulder and elbow function as mentioned in this paper.
Vorderer, oberer Schulterquadrant
TL;DR: This anatomical complexity must be considered in questionable isolated injuries in the region of the anterior superior shoulder quadrant because actual isolated injuries are unlikely to be the result of an accident.
Are we over-treating biceps tendon disorders?
TL;DR: The histopathological findings determined were not sufficient to explain the pathophysiology of biceps tendinopathy diseases, and strengthened the view that extrinsic factors apart from the tendon could play a significant role in the pathogenesis of the disease.
References
Tears of the supraspinatus tendon associated with “hidden” lesions of the rotator interval
TL;DR: Exploration of the rotator interval during repair of 116 apparently "isolated" supraspinatus tendon lesions have revealed "hidden lesions" of the coracohumeral ligament, the superior glenohumal ligaments, and the superior portion of the subscapularis tendon.
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Anatomy and functional aspects of the rotator interval
TL;DR: The anatomy of the region between the supraspinatus and subscapularis tendons, called the rotator intervals, was studied in 22 shoulders of 12 cadavers and its function was examined by sequential cutting of tendon or rotator interval structures.
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Anterior and Posterior Instability of the Long Head of the Biceps Tendon in Rotator Cuff Tears: A New Classification Based on Arthroscopic Observations
TL;DR: A new arthroscopic classification of LHB instability is created with respect to the direction and extent of L HB instability, lesions of the LHB, and status of the adjacent rotator cuff tendons.
190
Medial Dislocation of the Tendon of the Long Head of the Biceps Brachii
Pär Slätis,Kari Aalto +1 more
TL;DR: Anatomical dissections on eight shoulders showed that the coracohumeral ligament is the key ligament which keeps the biceps tendon aligned in the sulcus: transection of the medial part of the ligament allows the tendon to be medially displaced.
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Spontaneous dislocation and destruction of tendon of long head of biceps brachii: fifty-nine instances
TL;DR: It follows that the tendon of either head may also be absent congenitally, but it is improbable that all the statements in the literature on this matter can be taken at their face value.
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