Related Experiment Video
Updated: Jan 22, 2026
Laparoscopic Common Bile Duct Exploration Followed by Primary Suture Using a Modified Bile Duct Incision
Published on: May 2, 2025
Biomechanical analyses of common suspension sutures in primary cleft lip rhinoplasty
Hanyao Huang1, Xu Cheng1, Xiangyou Luo1
1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, 14 Renmin South Road, Chengdu, 610041, China.
Insights
A finite element analysis of cleft lip nasal rhinoplasty sutures shows that fastening medial crura together (F1) offers the most symmetrical nasal shape restoration with minimal stress. This technique is promising for primary cleft lip repair.
Area of Science:
- Plastic Surgery
- Biomechanical Engineering
- Craniofacial Surgery
Background:
- Understanding biomechanical consequences of suspension sutures in primary cleft lip nasal rhinoplasty is crucial.
- Current literature lacks detailed biomechanical analysis of common suspension techniques.
Purpose of the Study:
- To biomechanically evaluate four distinct suspension suture techniques used in primary cleft lip nasal rhinoplasty.
- To determine the effects of each suture on nasal structure deformation and stress distribution.
Main Methods:
- A finite element model of an infant nasal structure was developed.
- Simulations were performed for cleft lip closure and four suspension sutures (F1-F4) applying different forces.
- Deformation and stress distribution were analyzed for each simulated maneuver.
Main Results:
- Cleft lip closure corrected columellar deviation.
- All tested sutures provided some degree of alar cartilage elevation.
- F1 (fastening medial crura) resulted in the lowest skin envelope stress.
- F2 did not restore nasal tip collapse.
Conclusions:
- Each suspension suture technique exhibits unique biomechanical characteristics.
- F1, the suture fastening both medial crura, shows potential for primary cleft lip rhinoplasty due to symmetrical restoration and low stress.
- Further biomechanical evaluation supports F1 as a favorable surgical option.
Background:
For a better understanding of common suspension sutures during primary cleft lip nasal rhinoplasty, the biomechanical consequences of those sutures need to be demonstrated.
Methods:
A finite element model of the infant specimen was established. The closure of cleft lip and four different specific suspension sutures were simulated by loading different forces on the model: 1. F1 to simulate the suture fastening both medial crura together; 2. F2 to simulate the suture which sewed both medial crura and the non-cleft-side upper lateral cartilage together; 3. F3 to simulate the suture elevating the alar cartilage cranially; 4. F4 to simulate the suture elevating the alar cartilage superiorly. The deformation and stress distribution consequent to each maneuver were analyzed in details.
Results:
The deviation of columella was restored through the closure of cleft lip. Different suspension sutures had different biomechanical effects on the nasal structure. All suspension sutures had the function on elevating the alar cartilage. F2 had no function on restoring the collapse of the nasal tip. The suture which fastened both medial crura together leaded to the lowest stress on the skin envelope.
Conclusions:
Each suspension suture had its characteristics respectively. The simulation suggested that F1, the suture which fastened both medial crura, could be the most potential maneuver for cleft lip rhinoplasty because it can symmetrically restore the shape of the nose without incurring a significant increase in stress.
Related Concept Videos
03:24Common Ion Effect
01:22Sutures of the Skull
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
01:17Colloids and Suspensions
01:31Common Respiratory Disorders
Upper respiratory disorders impact the airways above the vocal cords, encompassing areas like the nose, sinuses, and throat. Various conditions fall under this category, including the common cold and allergic rhinitis. These disorders can stem from several causes,...
01:11Common Names of Aldehydes and Ketones
Common names of aldehydes are derived from the names of their corresponding acid. For instance, the two-carbon aldehyde–acetaldehyde derives its name from the corresponding acid–acetic acid. Similarly, formaldehyde derives its name from formic acid and benzaldehyde from benzoic acid.
Aliphatic ketones are named by suffixing the word “ketone” to the...
01:19Mass Analyzers: Common Types