All of the following structures forms the boundary of triangle of auscultation?
The structures forming the boundary of triangle of auscultation are lower pa of medial border of scapula laterally, lateral margin of trapezius medially, and latissimus dorsi below. Winging of scapula is a deformity in which the veebral border and inferior angle of scapula protrude posteriorly due to paralysis of serratus anterior muscle.
Trapezius
Latissimus dorsi
Rhomboids major
Medial border of scapula