scalenotomy

Division or section of the anterior scalene muscle. [scalene + G. tome, incision]

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sca·le·not·o·my .skā-lə-'nät-ə-mē also sca·le·ni·ot·o·my .skā-lē-nē-'ät- n, pl -mies surgical severing of one or more scalenus muscles near their insertion on the ribs

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sca·le·not·o·my (ska″lə-notґə-me) [scalenus + -tomy] sectioning of the scalene muscles to restrict respiratory activity of the upper thorax and thus induce apical rest; formerly used in treatment of pulmonary tuberculosis.