China
Africa
Explore chapters and articles related to this topic
Upper Limb Muscles
Published in Eve K. Boyle, Vondel S. E. Mahon, Rui Diogo, Handbook of Muscle Variations and Anomalies in Humans, 2022
Eve K. Boyle, Vondel S. E. Mahon, Rui Diogo
The short head of biceps brachii originates via a tendon from the coracoid process (Standring 2016). The long head of biceps brachii originates within the shoulder joint capsule via a tendon from the supraglenoid tubercle of the scapula (Standring 2016). Both bellies converge into a tendon to insert onto the radial tuberosity (Standring 2016). The tendon has a medial expansion, termed the bicipital aponeurosis (Standring 2016).
Musculoskeletal system
Published in A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha, Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha
Intrinsic features include the glenoid labrum, which is a ring of fibrocartilage attached to the periphery of the glenoid fossa to deepen the articular surface. The long head of biceps arises from the supraglenoid tubercle within the capsule and runs superiorly and laterally to the joint, exiting down the bicipital groove. Extrinsic ligaments include the coraco-acromial, coraco-humeral and gleno-humeral. The deltoid muscle covers the joint anteriorly, posteriorly and laterally.
Upper Limb
Published in Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno, Understanding Human Anatomy and Pathology, 2018
Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno
The larger portion of the scapula (Plate 4.7a and b) is formed by intramembranous ossification, while the outer parts are mainly formed by endo-chondral ossification. Along the superolateral portion of the scapula are the acromion, suprascapular notch (bridged by the superior transverse scapular ligament), and supraspinous fossa. The scapular spine extends from the acromion to divide the supraspinous fossa and infraspinous fossa (located superior and inferior to the spine, respectively). On the lateral aspect is the glenoid fossa (or glenoid cavity, deepened by the cartilaginous glenoid labrum), which articulates with the humerus. The supraglenoid tubercle lies just superior to this cavity, while the infraglenoid tubercle lies inferior. Inferior to the glenoid cavity is the lateral border of the scapula, which, when followed medially, becomes the inferior angle of the scapula. The medial (vertebral) border of the scapula will become the superior angle of the scapula when followed superiorly. The coracoid process lies inferior to the acromion and just medial to the glenoid cavity (this process is the remnant of a bone present in our fish ancestors, the coracoid bone).
Shoulder magnetic resonance imaging findings in manual wheelchair users with spinal cord injury
Published in The Journal of Spinal Cord Medicine, 2022
Omid Jahanian, Meegan G. Van Straaten, Brianna M. Goodwin, Ryan J. Lennon, Jonathan D. Barlow, Naveen S. Murthy, Melissa M.B. Morrow
The long head of the biceps tendon originates on the supraglenoid tubercle, curving over the humeral head and entering the bicipital groove between the supraspinatus and subscapularis tendons (the rotator cuff interval).23 In the region of the rotator cuff interval many structures are intimately associated with each other including the long head of the biceps, the superior subscapularis tendon, the anterior supraspinatus tendon, and ligaments of the shoulder.23 The medial border of the biceps pulley is formed by the attachment of the subscapularis tendon to the lesser tubercle of the humerus, therefore disruption of the subscapularis is commonly seen with medial subluxation of the biceps tendon.24 Surgeons often observe concomitant subscapularis and biceps tendon pathology at the time of treatment for supraspinatus and infraspinatus tears.24 Mehta and colleagues recently found that the prevalence of biceps disease was significantly related to the size of posterior/superior rotator cuff tears, thus highlighting the importance of reporting concomitant biceps disease with rotator cuff data.24
Evaluation of function following rehabilitation after distal biceps tendon repair
Published in European Journal of Physiotherapy, 2020
Maria Liljeros, Monika Fagevik Olsén, Gunilla Kjellby Wendt
Distal biceps tendon rupture is an uncommon injury, which most often affects men aged 40–60 and constitutes 3% of all biceps ruptures. The injury incidence is 1.2/100,000/year and often occurs due to an eccentric force to a supinated and flexed elbow [1–3]. The biceps brachii is the most superficial and prominent muscle in the anterior compartment of the arm. It has two heads and crosses over both the shoulder and elbow joints. The long head originates from the supraglenoid tubercle, and the short head from the coracoid process of the scapula [4]. Together they insert distally to the radial tuberosity and into the deep fascia of the forearm via the bicipital aponeurosis (also called lacertus fibrosus). The biceps brachii is the most powerful supinator and flexor of the elbow, a rupture will therefore affect the elbow with reduced strength in both supination and flexion [1,4,5]. Possible causes of distal biceps tendon rupture are vascular, degenerative and mechanical, or an inflammation in the biceps radial bursa [1,5,6].
Brachial distal biceps injuries
Published in The Physician and Sportsmedicine, 2019
Drew Krumm, Peter Lasater, Guillaume Dumont, Travis J. Menge
The biceps brachii muscle is made up of a short head and a long head. The short head originates on the coracoid process, while the long head originates on the supraglenoid tubercle. They each insert on the radial tuberosity. This muscle’s main action is to supinate the forearm, but it also assists in elbow flexion. Since the short head has a more distal attachment on the tuberosity than the long head, it is a greater contributor to elbow flexion. The long head attaches to the apex of the tuberosity and is a greater contributor to supination than the short head. The biceps is innervated by the musculocutaneous nerve and receives its blood supply from branches of the brachial artery. On clinical exam, the distal biceps tendon may be mistaken for the lacertus fibrosus, also known as the bicipital aponeurosis, which originates from the short head of the biceps and helps protect the neurovascular bundle in the antecubital fossa. The lateral antebrachial cutaneous nerve (LABCN), which is the terminal cutaneous branch of the musculocutaneous nerve, is at risk for injury in operative repair of distal biceps avulsion injuries. It is located between the biceps and brachialis muscles and pierces the deep fascia just lateral to the distal biceps tendon. The nerve is located in the subcutaneous tissue of the antecubital fossa and supplies sensation to the lateral aspect of the forearm. The radial nerve is also at risk for injury. The radial nerve is located between the brachioradialis and brachialis near the distal humerus. It bifurcates into the posterior interosseous nerve and radial sensory nerve in the antecubital fossa [6].