๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
CHIN
CHIN
Both midline and lateral chin defects are very amenable to repair via rotation flaps. This, in large part, is due to the contour of the chin, specifically the downturned semicircular shape of the mental crease in many individuals. Single-armed, traditionally designed rotation flaps are particularly suited for laterally based defects on the chin. These flaps are elevated above the mentalis muscle, and the long arcuate incision line is camouflaged neatly within the mental crease. Defects ranging from 2 to 3 cm can be
repaired with excellent cosmesis.24 Midline chin defects near the mental crease may be more appropriately reconstructed with a double, bilateral rotation flap. Nearly mirror image flaps are designed, again with the arc of rotation hidden in the cosmetic boundary separating this area from the cutaneous lip. As opposed to the O to Z flap, in this area, bilaterally symmetric flaps are rotated in opposite clockwise directions. The leading edges of the flaps meet in the midline and sutured together. A standing cone deformity is formed immediately inferior to the defect and requires extirpation.