Dr. Shetty's Center of Orthopaedics
A sudden shoulder injury during a sporting activity or road traffic accident can create a forceful dislocation. This event of dislocation rips and tears apart the bumper (labrum) from the front and inferior aspects of the Glenoid bone socket, which is called Bankart’s lesion. When the labrum is torn, the bony cartilage rim around the socket is compromised (the water dam’s wall is broken off), allowing the humeral head to slip forward and dislocate with exertional movements.
when the arm moves too far forward and down (the head of the arm bone moving out of its place in a forward direction). Few dislocations occur in the reverse direction, with the arm moving backwards out of the glenoid bone socket, causing damage to the back portion of the labrum tissue.
If this injury is associated with a fracture of the shoulder socket (glenoid cavity), this is called a bony or osseous Bankart lesion.
An untreated Bankart lesion can lead to chronic shoulder instability, meaning your shoulder may dislocate again in the future, probably in situations involving less force than the original injury.
Causes-