Sentence:  SMAS flaps or SMASectomies are considered <WSD>imbrications</WSD> in this chapter. SMAS tightening is probably a more accurate description with 'open' SMAS techniques referring to <WSD>imbrication</WSD> and 'closed' SMAS techniques referring to plication. 
Meaning of the word marked with <WSD> tags:  Overlapping of layers of tissue in wound closure or correctional surgery.