Cleft repair is a specialized reconstructive surgical pathway within pediatric plastic surgery and craniomaxillofacial surgery. The primary clinical objective is the functional and anatomical alignment of tissues disrupted during early fetal development. Cleft lip repair reconnects the split orbicularis oris muscle surrounding the mouth to restore upper lip sphincter function and symmetrical nasal contours. Cleft palate repair re-approximates the hard and soft palatal shelves, reconstituting the levator veli palatini muscle sling. Reestablishing this muscular arcade isolates the oral cavity from the nasal cavity, which is essential for normal swallowing, normal pressure generation during speech, and prevention of fluid reflux into the nasopharynx.

Cleft repair procedures are performed under general anesthesia with endotracheal intubation using a preformed oral RAE (Ring-Adair-Elwyn) tube. For cleft lip repair (cheiloplasty), precise anatomical landmarks are measured and marked along the cleft edges. Surgical incisions are made using techniques such as the Millard rotation-advancement or Fisher anatomical repair. The abnormal attachments of the orbicularis oris muscle are dissected free from the anterior nasal spine and nostril base. The muscle fibers are turned transversely and sutured together to recreate a continuous oral sphincter ring. The overlying mucosal layers and cutaneous skin flaps are meticulously aligned to construct a symmetrical philtral column, lip peak (Cupid's bow), and vermilion border. For cleft palate repair (palatoplasty), a specialized mouth gag (Dingman gag) opens the mouth and stabilizes the tongue. Incisions are made along the margins of the cleft and lateral margins of the palate (von Langenbeck or two-flap palatoplasty). Full-thickness mucoperiosteal flaps are elevated off the hard palate bone. The abnormal levator veli palatini muscle fibers are detached from the posterior hard palate (Sommerlad intravelar veloplasty or Furlow double-opposing Z-plasty) and reoriented 90 degrees to form a transverse muscle sling. The oral mucosa, muscular layer, and nasal mucosa are closed independently in three distinct layers using absorbable sutures. A temporary safety suture may be placed through the tongue to maintain the airway during emergence from anesthesia if posterior tongue collapse is anticipated.

Clinical evidence demonstrates that timely surgical cleft repair offers distinct physiological, structural, and developmental benefits:

• Restoration of Intraoral Suction and Feeding Mechanics: Surgical closure isolates the mouth from the nasal passage, enabling efficient fluid transport and normal weight gain trajectories without nasal regurgitation (ACPA Parameters of Care, 2022).
• Establishment of Normal Speech Articulation: Reconstructing the levator veli palatini muscle sling allows proper velopharyngeal closure, preventing hypernasal speech (hypernasality) and compensatory articulation errors.
• Middle Ear Function and Hearing Protection: Realignment of the palatal musculature promotes natural Eustachian tube drainage, reducing persistent middle ear effusion and preserving conductive hearing acuity.
• Symmetrical Craniofacial and Dental Development: Early anatomical reconstruction guides natural jaw alignment, reduces severe alveolar arch collapse, and establishes favorable anatomical foundations for future dental eruption.
• Nasal Airway and Airflow Optimization: Alignment of nasal cartilage structures during primary cheiloplasty lowers upper airway resistance and improves nasal symmetry.

Recovery from cleft repair follows a two-phase trajectory comprising acute surgical healing and long-term functional adaptation. In the immediate post-operative period (Days 1–14), hospital discharge occurs within 24 to 48 hours once stable oral fluid intake and an open airway are confirmed. Patients utilize soft elbow immobilizers ("no-no" arm splints) for 2 to 3 weeks to prevent the child from touching facial or intraoral suture lines. Pain is managed with scheduled non-opioid analgesics such as acetaminophen and ibuprofen. A specialized liquid or smooth puree diet is delivered via cup, syringe, or squeeze bottle; hard nipples, pacifiers, straws, and rigid eating utensils are strictly prohibited to protect fragile palatal flaps.

In the long-term recovery phase (Weeks 3 through 12 months), soft tissue scar tissue matures and softens. Scar massage and topical silicone gels begin around 3 to 4 weeks post-cheiloplasty. Primary speech assessment occurs around 18 to 24 months, with formal speech therapy initiated if hypernasality or articulation errors emerge. Pediatric audiology evaluations occur every 6 months to monitor middle ear fluid, often alongside tympanostomy tube placement. Pediatric orthodontists assess maxillary arch width and plan for secondary alveolar bone grafting between ages 7 and 11, coinciding with mixed dentition development.

Cleft repair directly addresses congenital facial cleft anomalies caused by incomplete fusion of embryonic facial prominences. Key indications include:

• Unilateral Cleft Lip: A partial or total separation of one side of the upper lip, often involving the floor of the nostril.
• Bilateral Cleft Lip: Separation occurring on both sides of the upper lip, frequently isolating the central portion of the lip (prolabium) and premaxilla.
• Incomplete Cleft Palate: A tissue defect confined to the soft palate or posterior hard palate.
• Complete Cleft Palate: A full separation extending through both the hard palate and soft palate, opening a direct communication between the mouth and nasal cavity.
• Submucous Cleft Palate: A muscular defect of the soft palate underlying an intact mucosal surface, often characterized by a bifid uvula and notch in the hard palate edge.
• Velopharyngeal Insufficiency (VPI): Incomplete closure of the soft palate against the back wall of the throat during speech, secondary to palatal tissue deficits or altered muscle alignment.
• Alveolar Cleft: A gap in the upper gum ridge requiring bone grafting prior to permanent canine tooth eruption.

Preoperative preparation for cleft repair centers on nutritional optimization, airway clearance, and comprehensive pediatric health screening. Infants must meet clinical baseline standards—historically summarized by the "Rule of 10s" for cleft lip repair: age at least 10 weeks, weight of at least 10 pounds (4.5 kg), and a hemoglobin level of at least 10 g/dL, with a white blood cell count under 10,000/mcL. Pre-procedure diagnostic evaluations include a thorough physical exam by a pediatrician, pediatric anesthesia risk assessment, complete blood count, and genetic screening if syndromic features are present. If the infant uses a presurgical infant orthopedic device such as a nasoalveolar molding (NAM) appliance, adjustments cease immediately prior to surgery as directed by the orthodontist. Parents are instructed on strict preoperative NPO (nothing by mouth) fasting guidelines, typically restricting clear liquids 2 hours prior and breast milk or infant formula 4 to 6 hours prior to induction. Upper respiratory tract infections must be ruled out immediately prior to surgery to minimize airway hyperreactivity and post-extubation croup.

Complications following cleft repair are categorized by time of onset and severity. Mild and short-term side effects include immediate facial swelling, mild bloody nasal discharge, temporary sleep disturbance, and minor surgical site bruising. Moderate surgical complications include localized wound dehiscence (separation of suture lines), superficial wound infection requiring antibiotics, localized scar hypertrophy, and temporary airway distress secondary to mucosal edema. Uncommonly, cleft palate repair can result in a palatal fistula—a persistent, unintended opening between the mouth and nasal cavity caused by tissue breakdown—occurring in approximately 5% to 10% of cases depending on cleft width and tissue tension. Fistulas can cause nasal fluid leakage and air escape during speech. Serious but rare risks include significant intraoperative or post-operative intraoral hemorrhage requiring blood transfusion, acute upper airway obstruction following extubation requiring re-intubation, flap necrosis due to compromise of the greater palatine artery supply, and rare adverse reactions to general anesthesia. Long-term secondary risks include velopharyngeal insufficiency (VPI) requiring secondary speech surgery, midface developmental restriction (maxillary hypoplasia) caused by scar tissue traction on the growing maxilla, and persistent Eustachian tube dysfunction.

The clinical journey for cleft repair spans infancy through early adulthood, managed by a interdisciplinary craniofacial team. Pre-treatment begins in early infancy with diagnostic imaging, genetic evaluations, feeding management using specialized squeeze bottles or valves, and potential presurgical infant orthopedics such as nasoalveolar molding (NAM). Surgical repair follows a standardized developmental timeline: cleft lip repair is typically performed between 3 and 6 months of age, while cleft palate repair occurs between 9 and 12 months of age. The immediate post-procedure phase requires inpatient airway monitoring, pain control, soft arm immobilizers, and specialized liquid feeding protocols. Long-term follow-up involves serial speech assessments, audiological hearing tests, tympanostomy tube monitoring, pediatric orthodontic care, secondary alveolar bone grafting around ages 7 to 11, and potential adolescent rhinoplasty or jaw surgery.