Congenital malformations are one of the main topics, which must be addressed in the 21st century. Fetal surgery is expected to become a routine procedure for malformed fetal patients in the near future. This paper presents some important aspects of the embryological background required for fetal surgery and shows normal human embryos between the 4th and the 8th week of development.
Abnormalities/surgery ; Female ; *Fetal Development ; Fetus/*physiology/*surgery ; Gestational Age ; Human ; Pregnancy ; Pregnancy Trimester, First

Craniosynostosis occurs in approximately 1:2000 live births. It may affect the coronal, sagittal, metopic and lambdoid sutures in isolation or in combination. Although non-syndromic synostoses are more common, over 150 genetic syndromes have been identified. Recent advances in genetic mapping have linked chromosomal mutations with craniosynostotic syndromes. Despite the identification of these genetic mutations, the fundamental biomolecular mechanisms mediating cranial suture biology remain unknown. Today, many laboratories are investigating murine cranial suture biology as a model for human cranial suture development and fusion. Normal murine cranial suture biology is very complex, but evidence suggests that the dura mater provides the biomolecular blueprints (e.g. the soluble growth factors), which guide the fate of the pleuripotent osteogenic fronts. While our knowledge of these dura-derived signals has increased dramatically in the last decade, we have barely begun to understand the fundamental mechanisms that mediate cranial suture fusion or patency. Interestingly, recent advances in both premature human and programmed murine suture fusion have revealed unexpected results, and have generated more questions than answers.
Animal ; Craniosynostoses/*etiology/genetics/surgery ; Fetal Development ; Fetus/*physiology ; Human ; Mutation

OBJECTIVETo investigate the nasolabial muscle anatomy and biomechanical characteristics.

METHODSMicro-computed tomography scan was performed in 8 cases of spontaneous abortion fetus lip nasal specimens to construct a three-dimensional model. The nasolabial muscle structure was analyzed using Mimics software. The three-dimensional configuration model of nasolabial muscle was established based on local anatomy and tissue section, and compared with tissue section. Three dimensional finite element analysis was performed on lip nasal muscle related biomechanics and surface deformation in Application verification was carried out in 263 cases of microform cleft lip surgery.

RESULTSThere was close relationship between nasolabial muscle. The nasolabial muscle tension system was constituted, based on which a new cleft lip repair surgery was designed and satisfied results were achieved.

CONCLUSIONSThere is close relationship among nasolabial muscle in anatomy, histology and biomechanics. To obtain better effect, cleft lip repair should be performed on the basis of recovering muscle tension system.

Aborted Fetus ; Biomechanical Phenomena ; Cleft Lip ; surgery ; Facial Muscles ; anatomy & histology ; diagnostic imaging ; physiology ; Finite Element Analysis ; Humans ; Lip ; anatomy & histology ; diagnostic imaging ; Muscle Tonus ; Nose ; anatomy & histology ; diagnostic imaging ; Software ; X-Ray Microtomography