Related Experiment Video
Updated: Feb 3, 2026

Laparoscopic Anatomical Right Hemihepatectomy via the In Situ Anterior Approach
Published on: August 8, 2025
Anatomic approximation approach to correction of transverse facial clefts
Raymond W Tse1, Robert J Knight1, David M Fisher2
1Division of Craniofacial and Plastic Surgery, Seattle Children's Hospital, 4800 Sand Point Way NE, Seattle, WA, 98105, USA.
Abstract:
Transverse clefts of the oral cavity have significant impacts on both appearance and function. Many methods of repair have been described, but there is no consensus on optimal approach. In addition, dissatisfaction with scars, distortion of appearance, and recurrent deformity have led to complex surgical designs that are difficult to understand and reproduce. We describe a simple approach to repair that is based upon anatomic approximation of lip components and accurate repair of the muscle. Twenty patients underwent repair by the senior author, who devised the approach, and the corresponding author, who adopted it. Eight (62%) patients had right-sided clefts, three (23%) patients had left-sided clefts, and two (15%) patients had bilateral clefts. One patient had an associated branchial cleft remnant, two patients had multiple branchial cleft remnants and tragus deformities, one patient had craniofacial microsomia with microtia, and one patient had a contralateral Tessier 1 cleft. Mean age of the patients at repair was 23 months. All patients achieved normal oral competence, have favorable scars and commissure appearance, and have had no recurrent deformity. None of the patients have required revision. The described surgical approach is reproducible, easy to understand, and can produce favorable outcomes.
Related Concept Videos
Approximate Integration
Linearization and Approximation
Accuracy, limits, and approximation
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
Application of Linearization and Approximation
Distance Corrections
Power Factor Correction

