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Human Shoulder Joint Model
Kinematic Ligamentous Integration: Features flexible, resilient synthetic ligaments—including the coracoacromial and capsular ligaments—that demonstrate specific functional tension and range-of-motion constraints during abduction and rotation.
Forensic Osteological Casting: Fabricated from high-density, medical-grade PVC, the model accurately replicates the surface topography of the scapula, clavicle, and humeral head to simulate biological bone density and haptic feedback.
$11.67
Quick Answer: The Human Shoulder Joint Model is a shoulder joint model of the joint between the head of the humerus and the glenoid cavity of the scapula, used to teach why the shoulder moves so freely, what keeps it in place and why it dislocates more often than any other large joint.
Mobility at a Price
The glenohumeral joint is a ball-and-socket joint with a large ball and a small, shallow socket: the glenoid cavity covers only a fraction of the humeral head, rather like a golf ball on a tee. A rim of fibrocartilage, the glenoid labrum, deepens it a little. The payoff is the greatest range of movement of any joint in the body; the cost is stability, which depends heavily on muscles rather than bone.
Those muscles are the rotator cuff: supraspinatus, infraspinatus, teres minor and subscapularis, often remembered by the letters SITS. Their tendons blend with the joint capsule and hold the humeral head in the socket while larger muscles move the arm. Above the joint, the acromion, the coracoid process and the ligament between them form an arch under which the supraspinatus tendon and the subacromial bursa glide. The clavicle meets the acromion at the small acromioclavicular joint at the point of the shoulder.
The title does not state whether this model includes ligaments, the rotator cuff or the clavicle, or whether the joint moves, so confirm its form. The functional shoulder joint model is listed for demonstrations of movement.
Specifications
| Model of | Human shoulder joint |
| Bones | Scapula (glenoid, acromion, coracoid), humeral head; clavicle where included |
| Joint type | Synovial ball-and-socket (glenohumeral) |
| Structures taught | Glenoid labrum, capsule, rotator cuff, subacromial bursa |
| Ligaments, muscles and movement | Confirm at enquiry |
Applications
- Anatomy teaching of the scapula, humerus and shoulder girdle
- Physiotherapy and sports-medicine lessons on rotator cuff tears and impingement
- Explaining anterior shoulder dislocation and frozen shoulder to patients
- Orthopaedic nursing education before shoulder surgery placements
Care & Handling
- Hold the shoulder joint model by the thick lateral border of the scapula or its base, not by the thin acromion or coracoid process.
- Keep the humerus supported so it does not hang from the joint and stretch any ligament material.
- Clean around the glenoid rim with a soft brush, then wipe the bone surfaces with a lightly damp cloth.
Why Choose LabEquip
Sports-injury clinics, physiotherapy schools and anatomy departments buy shoulder models because shoulder complaints are among the most common they teach. LabEquip includes this model in biology lab products; use the contact page to ask about ligaments and muscles.
Frequently Asked Questions
Why does the shoulder dislocate so easily?
The glenoid socket is small and shallow compared with the large humeral head, so bone gives little stability. Most dislocations are anterior, with the head pushed forward when the arm is forced out and backward.
What is the rotator cuff?
Four muscles, supraspinatus, infraspinatus, teres minor and subscapularis, whose tendons surround the humeral head and hold it in the socket. Supraspinatus is the one most often torn or inflamed.
What is shoulder impingement?
Pinching of the supraspinatus tendon and subacromial bursa under the acromial arch when the arm is raised, causing pain in a middle range of lifting. Bony spurs and weak cuff muscles can contribute.
What is frozen shoulder?
A condition in which the joint capsule becomes thickened and tight, so the shoulder becomes painful and stiff in all directions. It usually improves slowly over many months.
What does the glenoid labrum do?
It is a ring of fibrocartilage around the glenoid rim that deepens the socket and anchors the capsule and part of the biceps tendon. Tears can follow dislocation or repetitive overhead sport.
Which bones form the shoulder girdle?
The clavicle and the scapula. They connect the arm to the trunk, and the only bony link to the rest of the skeleton is the joint between the clavicle and the sternum.
Last Updated: September 2026
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