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Related Concept Videos

Muscles of the Shoulder01:23

Muscles of the Shoulder

The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

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...
Muscles that Move the Arm01:31

Muscles that Move the Arm

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.
The pectoralis major has two origins. Its clavicular head originates on the medial half of the clavicle. In contrast, the sternocostal head originates on the costal cartilages of ribs 1-6, the sternum, and the aponeurosis of the external oblique of the...
Functional Classification of Joints01:09

Functional Classification of Joints

Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...

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Related Experiment Video

Updated: May 11, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Bilateral anterior shoulder dislocation.

Hussein Nourredine1, Mohamed El Sayad, Syed Gull

  • 1Princess of Wales Hospital, Bridgend, UK.

BMJ Case Reports
|May 2, 2013
PubMed
Summary
This summary is machine-generated.

This case study presents a rare instance of simultaneous bilateral anterior shoulder dislocation in an elderly male following trauma. Prompt closed reduction and immobilization led to successful functional recovery without neurological complications.

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Area of Science:

  • Orthopedic Surgery
  • Traumatology
  • Geriatric Medicine

Background:

  • Simultaneous bilateral anterior shoulder dislocation is an uncommon injury, particularly in elderly patients.
  • Traumatic injuries in older adults often present unique challenges due to comorbidities and physiological changes.

Observation:

  • A 70-year-old male sustained a traumatic injury resulting in simultaneous dislocation of both anterior shoulder joints.
  • Clinical examination revealed no evidence of motor, sensory, or vascular compromise in either upper extremity.

Findings:

  • The patient underwent successful closed reduction of both dislocated shoulders under general anesthesia.
  • Post-reduction, the shoulders were immobilized for a period of four weeks.

Implications:

  • This case highlights the importance of prompt diagnosis and management of rare traumatic shoulder injuries in the geriatric population.
  • Successful outcomes can be achieved with appropriate non-operative management, emphasizing the need for thorough orthopedic assessment in trauma cases.
  • The case provides valuable insights into the management of complex shoulder dislocations in elderly individuals, contributing to orthopedic literature.