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The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
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The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
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Nine muscles are involved in arm movements. Two of these, the pectoralis major and latissimus dorsi, originate from the axial skeleton and are called axial muscles. The other seven originate from the scapula and are called the scapular muscles.
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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
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The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
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Biceps, Brachialis, and Triceps.

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|October 27, 2021
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Summary
This summary is machine-generated.

Elbow tendon injuries commonly affect the distal biceps, leading to degeneration or rupture. The lacertus fibrosus influences retraction, and biceps issues often involve the bicipital bursa.

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Area of Science:

  • Orthopedics
  • Sports Medicine
  • Anatomy

Background:

  • Distal biceps tendon injuries are common elbow pathologies, often resulting from degeneration or acute rupture.
  • The lacertus fibrosus plays a role in the retraction extent of distal biceps injuries.
  • Biceps disorders are frequently linked to the bicipital bursa, which can also be a primary site of inflammation.

Purpose of the Study:

  • To review the common tendon injuries affecting the elbow.
  • To describe the anatomical structures involved in elbow tendon pathologies.
  • To differentiate between primary and secondary elbow tendon disorders.

Main Methods:

  • Literature review of elbow tendon injuries.
  • Anatomical correlation of tendon injuries with surrounding structures.
  • Pathophysiological analysis of biceps and triceps tendon disorders.

Main Results:

  • Distal biceps injuries are more prevalent than distal triceps or brachialis injuries.
  • Lacertus fibrosus integrity impacts biceps tendon retraction.
  • Distal triceps tears often involve olecranon avulsion fractures; brachialis injuries result from hyperextension.

Conclusions:

  • Elbow tendon injuries vary in incidence and mechanism.
  • Anatomical considerations are crucial for understanding injury patterns and severity.
  • Bicipital bursitis can be associated with or primary to biceps tendon pathology.