Related Experiment Video
Updated: May 24, 2026
10:10
Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Anterosuperior glenoid impingement syndrome
Shelley S Bath1, Shaun S Bath, Jamshid Tehranzadeh
1Director MRI/Musculoskeletal Imaging, Radiology Solutions Associates, Niagara Falls, USA.
Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
|February 21, 2012
Summary
Anterosuperior glenoid impingement, a cause of shoulder pain, involves subscapularis tears embedding between the glenoid and humeral head. This study presents novel MRI findings of this previously undescribed condition.
Area of Science:
- Orthopedics
- Radiology
- Sports Medicine
Background:
- Anterosuperior glenoid impingement is a recognized cause of shoulder pain.
- This condition is characterized by deep subscapularis tears.
Observation:
- Subscapularis fibers become lodged between the anterosuperior glenoid and humeral head.
- This specific tear pattern has not been previously documented in radiological literature.
Findings:
- The study presents Magnetic Resonance Imaging (MRI) findings that depict this specific impingement entity.
- MRI visualization reveals the embedded subscapularis fibers.
Implications:
- This research expands the understanding of shoulder impingement pathologies.
- Radiologists and orthopedic surgeons can utilize these findings for improved diagnosis of shoulder pain.
- Accurate MRI interpretation is crucial for identifying this specific cause of anterosuperior glenoid impingement.
Related Concept Videos
01:31Muscles 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...
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...
01:23Muscles 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...
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
01:19Bones 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...