Bankart lesion
Shoulder injury involving the anterior glenoid labrum.
A Bankart lesion is a shoulder injury resulting from a dislocation, damaging the anterior (inferior) glenoid labrum. This damage creates a pocket at the front of the glenoid into which the humeral head can dislocate. It typically requires surgery and often occurs alongside a Hill–Sachs lesion, which is damage to the posterior humeral head. A bony Bankart variant includes a fracture of the anterior-inferior glenoid cavity of the scapula. The condition is named after English orthopedic surgeon Arthur Sydney Blundell Bankart (1879–1951).
Signs and symptoms include recurrent shoulder instability and widespread shoulder discomfort. Some people experience catching, locking, or popping sensations. Most patients have either a first-time or repeated anterior shoulder dislocation.
Diagnosis is usually made through a combination of physical exam and medical imaging, such as projectional radiography (for bony Bankart) or MRI of the shoulder. Using intra-articular contrast improves evaluation of the glenoid labrum. Type V SLAP tears extend into the Bankart defect.
Treatment options include arthroscopic repair, which has good success rates, though a study found that nearly one-third of young adult patients need further surgery for continued instability, with higher re-operation rates in those under 20. Alternatives include the more invasive open Latarjet procedure, which tends to have a lower rate of recurrent dislocation but also a reduced range of motion after surgery.
Quick Facts
- Symptoms
- Shoulder instability and widespread shoulder discomfort, and catching, locking, or popping feelings in shoulders.
- Risks
- Anterior shoulder dislocation and/or repeated anterior shoulder subluxations.
- Diagnosis
- X-ray and MRI.
- Differential
- Anterior labroligamentous periosteal sleeve avulsion, Rotator Cuff Tears, SLAP Lesion, Impingement, Perthes lesion, Glenolabral articular disruption, Humeral avulsion of the glenohumeral ligament.
Facts from the source article.
Lore & Background
Arthur Sydney Blundell Bankart was an English orthopedic surgeon who lived from 1879 to 1951. The Bankart lesion is named after him, reflecting his work on shoulder injuries. The lesion is characterized by recurrent shoulder instability and widespread discomfort, often following a dislocated shoulder.
Reader's Guide
The Bankart lesion is a significant shoulder injury because it is a common cause of recurrent anterior shoulder dislocation. It involves the anterior (inferior) glenoid labrum and may include a fracture of the glenoid cavity (bony Bankart). Diagnosis typically combines physical exam and medical imaging, such as MRI with intra-articular contrast. Treatment options include arthroscopic repair or the more invasive open Latarjet procedure. While arthroscopic repair has good success rates, nearly one-third of young adult patients require further surgery for continued instability, with higher re-operation rates in those under 20. The open technique tends to have a lower incidence of recurrent dislocation but also reduced range of motion. The lesion is often accompanied by a Hill–Sachs lesion, damage to the posterior humeral head.
Anatomy and Mechanism of Injury
A Bankart lesion represents a specific type of shoulder damage that develops in the aftermath of a dislocated shoulder joint. The injury targets the anterior-inferior portion of the glenoid labrum, the cartilaginous rim lining the shoulder socket. Once this labral tissue is torn or avulsed, a small pocket forms at the front of the glenoid cavity. This newly created space becomes a trap: the humeral head can slip into it, setting the stage for repeated dislocations. In many cases the trauma is not isolated to the socket side. The opposing surface, the posterior aspect of the humeral head, frequently sustains its own damage in what is known as a Hill–Sachs lesion, meaning both sides of the joint are compromised. A particularly severe variant, the bony Bankart, goes beyond soft-tissue injury and involves an actual fracture of the anterior-inferior glenoid cavity of the scapula, adding a bone fragment to the problem. The condition is widely recognized as a clear indication that surgical intervention may be necessary to restore joint stability.
Clinical Presentation and Patient Experience
Patients living with a Bankart lesion typically report a pattern of recurring shoulder instability, meaning the joint gives way or feels like it is about to dislocate on multiple occasions. This instability is accompanied by broad, diffuse discomfort around the shoulder region rather than a single pinpoint of pain. Many individuals also describe mechanical sensations within the joint, such as a catching, locking, or popping feeling, as the humeral head shifts within the damaged socket. The predominant clinical picture involves primary or recurrent anterior shoulder dislocation, where the ball of the shoulder joint is forced out toward the front. The combination of these symptoms, the sense of the joint slipping, the persistent ache, and the tactile oddities of catching or popping, paints a clinical picture that strongly points toward labral pathology at the front-inferior glenoid rim. For the treating physician, this constellation of findings, especially in a patient with a history of one or more anterior dislocations, raises the suspicion of a Bankart lesion and prompts further diagnostic workup.
Diagnostic Workup and Imaging
Confirming a Bankart lesion typically requires a two-pronged diagnostic strategy that blends hands-on clinical assessment with advanced imaging. The physical examination provides the first layer of evidence, revealing instability patterns and reproducing the patient's discomfort. Imaging then fills in the structural details. In cases where a bony Bankart is suspected, meaning a fracture of the anterior-inferior glenoid cavity is in play, standard projectional radiography can reveal the bone fragment. For soft-tissue evaluation of the labrum itself, magnetic resonance imaging of the shoulder is the workhorse tool. Injecting intra-articular contrast dye into the joint before the MRI scan significantly sharpens the visualization of the glenoid labrum, making subtle tears or avulsions far easier to identify. An important diagnostic nuance involves Type V SLAP tears, a distinct labral injury pattern that extends into the Bankart defect, meaning the two pathologies overlap and must be distinguished or recognized together during imaging interpretation.
Surgical Options and Long-Term Outcomes
Surgical repair is the standard pathway for addressing a Bankart lesion, and arthroscopic techniques have demonstrated solid success rates in restoring shoulder stability. The minimally invasive arthroscopic approach allows the surgeon to reattach the torn labrum without large incisions. However, the long-term picture is not uniformly rosy, particularly for younger patients. Research has shown that nearly one in three young adult patients ultimately need a second operation because instability persists after the initial repair, and the re-operation rate climbs even higher among those under the age of twenty. When the arthroscopic route is not sufficient or the anatomy demands a more robust reconstruction, surgeons may turn to the open Latarjet procedure. This more invasive technique involves transferring a piece of bone to reinforce the front of the glenoid. The trade-off is clear: the Latarjet approach tends to produce a lower rate of recurrent dislocation, but patients often sacrifice some range of motion in the shoulder after surgery. The choice between these options depends on the patient's age, activity level, and the specific anatomy of the injury.
Frequently Asked Questions
Who is Bankart lesion?
It is a shoulder injury named after the English orthopedic surgeon Arthur Sydney Blundell Bankart (1879–1951), who first described the condition. Think of him as the real-world 'creator' behind the name fans use for this particular labral tear.
What does Bankart lesion actually do to the shoulder?
It tears the anterior-inferior portion of the glenoid labrum, leaving a gap at the front of the glenoid socket. That gap acts like a trapdoor into which the humeral head can slip and dislocate.
What are Bankart lesion's telltale signs and symptoms?
The most recognizable symptom is recurrent shoulder instability, where the joint keeps subluxing or popping out after the initial dislocation event.
Who does Bankart lesion usually appear alongside?
It very commonly co-occurs with a Hill–Sachs lesion, a corresponding compression dent on the posterior surface of the humeral head. Together the two injuries are essentially a 'pair' created by the same dislocation force.
How does Bankart lesion's story typically end?
Because the labral damage leaves the joint structurally unstable, surgical repair is usually required to restore the socket rim. A bony variant also exists in which the anterior-inferior glenoid cavity of the scapula is fractured rather than just the soft-tissue labrum.
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