A fracture of the glenoid, the socket of the shoulder joint, is a serious injury that can compromise the structural integrity of the shoulder if not assessed and managed correctly. While less common than proximal humerus or clavicle fractures, glenoid fractures carry a significant risk of long-term shoulder instability and arthritis if the articular surface is not restored.
Dr. Kushalappa Subbiah provides specialist assessment and surgical management of glenoid fractures in Bangalore, with expertise in arthroscopic and open techniques for restoring the shoulder joint surface and preventing post-traumatic complications.
What is Glenoid Fracture?
The glenoid is the shallow socket on the outer surface of the scapula into which the head of the humerus (ball) fits to form the shoulder joint. It is lined by a thin layer of articular cartilage and deepened by the glenoid labrum, which increases its effective surface area and contributes to joint stability. A glenoid fracture occurs when a force directed through the shoulder joint, typically from a dislocation or a direct blow, breaks the bony socket. Depending on the force and direction, the fracture can involve the anterior rim, the posterior rim, the superior portion, or the entire articular surface.
The most clinically significant concern with a glenoid fracture is whether the articular surface remains congruent and whether adequate bone stock is maintained to support the joint. Loss of glenoid rim bone is also directly related to recurrent shoulder instability, making early specialist assessment essential.
Types of Glenoid Fractures
Causes
Acute trauma is the primary cause of glenoid fractures. Shoulder dislocation, particularly anterior dislocation with an impaction mechanism, is the most common cause of anterior rim fractures. A direct fall onto the shoulder, a high-speed sports collision, or a road traffic accident can produce comminuted or articular surface fractures. Posterior rim fractures are associated with posterior shoulder dislocations, which themselves are often caused by seizures, electric shocks, or direct posterior blows to the shoulder.
- Significant shoulder pain following a traumatic event, often with an inability to move the shoulder
- Swelling, bruising, and tenderness around the shoulder joint
- Visible deformity of the shoulder contour if an associated dislocation has occurred
- A sensation of shoulder instability or apprehension in the days after an acute dislocation that is associated with an unrecognised glenoid fracture
- In chronic cases: recurrent shoulder dislocations or subluxations as a consequence of an untreated or malunited glenoid rim fracture
Diagnosis
Standard shoulder X-rays are the first investigation and will identify significant glenoid fractures and associated dislocation. CT scan with three-dimensional reconstruction is the gold standard for characterising the fracture pattern, measuring the size of any rim fragment, assessing comminution, and planning surgical fixation. MRI is used to identify associated soft tissue injuries including labral tears, rotator cuff damage, and neurovascular structures.
Treatment
Non-Surgical Management
Small, undisplaced glenoid fractures without instability can be managed conservatively with a sling for 4 to 6 weeks, analgesics, and early physiotherapy once comfort allows. Close follow-up with repeat imaging ensures the fracture remains in an acceptable position during healing.
Surgical Fixation and Reconstruction
Surgical treatment is indicated when the glenoid rim fragment is large (more than 20 to 25 percent of the glenoid width), when the articular surface is displaced, when the fracture is associated with persistent instability, or when comminution threatens the functional integrity of the joint surface. Dr. Kushalappa performs arthroscopic fixation of bony Bankart fragments using cannulated screws or suture anchors, and open reduction and internal fixation for more complex articular and comminuted fractures. In cases of irreparable bone loss, glenoid reconstruction using bone graft (iliac crest or allograft) or the Latarjet coracoid transfer procedure is performed to restore adequate bony anatomy and prevent recurrent instability.
Distal Clavicle Resection (where indicated)
When AC joint arthritis is present alongside instability, a small portion of the outer end of the clavicle is resected arthroscopically to eliminate arthritic pain and prevent impingement at the reconstructed joint. This is performed in the same procedure as the ligament reconstruction where appropriate.
Why Choose Dr. Kushalappa Subbiah in Bangalore?
Dr. Kushalappa Subbiah completed a Fellowship in Shoulder Surgery at the Sydney Shoulder Research Institute, where he trained in advanced arthroscopic shoulder procedures including labral repair and reconstruction. He holds the International Olympic Committee (IOC) Diploma in Sports Medicine, and has direct clinical experience managing shoulder injuries in Indian athletes across cricket, swimming, tennis, and contact sports. He is appointed as a Consultant Shoulder Surgeon at NH Hospital, Bangalore.