Rebuilding the Lip
Take the reading one piece at a time. For each piece: read it once, underline the sentence that says what happens, then look up any word in the list. Tap a word to see its definition.
Piece 1 of 2
Recall the muscle lesion from Lesson 3. The orbicularis oris is the sphincter that should encircle the mouth in a continuous ring. In Mateo's cleft, that ring is interrupted; instead of crossing the midline, the fibers turn and insert abnormally upward along the cleft margins, toward the nostril base and the columella base. This pulls the lip apart and distorts the nose. So the surgical problem is not a slit in the skin; it is a muscle ring that runs the wrong way and inserts in the wrong place. Modern lip repair is understood as functional reconstruction in three dimensions, not merely skin closure.
Piece 2 of 2
Three named techniques share the same goals (release the misdirected orbicularis, rebuild it as a continuous ring, level the Cupid's bow, restore lip height and nasal symmetry) and differ only in geometry. Millard rotation-advancement rotates the inner lip segment down and advances the outer segment into the gap so the scar mimics the natural philtral column; it is flexible but depends heavily on surgeon judgment. Tennison-Randall uses a precise triangular flap to regain lip height; it is reproducible but its scar crosses the philtral column. Fisher anatomical subunit places incisions along the lip's natural subunit borders so the scar hides in a real edge, and in expert hands it matches rotation-advancement.
Reading the Research
- Skim the title and abstract first to get the gist.
- Circle the one sentence that states the main claim.
- Box the evidence the authors give for that claim.
- Mark one sentence that confuses you, and move on.
Now put it together: In one or two sentences, say what this whole reading is telling you about Mateo. Then go back to the lesson and fill in the guided notes.