tho·ra·co·plas·ty 
(thôrə-kō-plăs′tē)
(thôrə-kō-plăs′tē)n. pl. tho·ra·co·plas·ties
Surgical removal of part of the ribs to allow inward retraction of the chest wall and collapse of a diseased lung.
[Latin thōrāx, thōrāc-, thorax; see THORAX + -PLASTY.]