Luschka tubercle

Snapping scapula

 

Definition

 

Disruption of the normal smooth motion of the scapulothoracic joint

- posterior scapula pain with overhead motion

 

Etiology

 

1.  Bony abnormalities

- osteochondromas

- prominence of the superior medial border of the scapula / Luschka tubercle

 

2.  Soft tissue abnormalities

- bursitis / scar tissue

- muscular weakness

 

3.  Masses