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[Structure of the mastoid process in children]
Insights
The mastoid process in children fully develops its pneumatic structure between ages 8–12. Post-development, its cellular structure refines without increased pneumatization, influenced by osteogenic processes.
Area of Science:
- Anatomy
- Pediatric Anatomy
- Osteology
Background:
- The mastoid process, a key part of the temporal bone, undergoes significant development during childhood.
- Understanding its structural changes is crucial for diagnosing and treating related conditions.
Purpose of the Study:
- To investigate the developmental stages of the mastoid process's pneumatic structure in children.
- To identify the age at which the mastoid process achieves its final pneumatic formation.
- To characterize post-formation structural changes in the mastoid process.
Main Methods:
- Analysis of 138 total preparations from children aged 1–16 years.
- Exclusion of cases with otogenic diseases to focus on normal development.
- Microscopic examination of the mastoid process structure, including cellulae mastoideae.
Main Results:
- The final formation of the pneumatic part of the mastoid process occurs between 8–12 years of age.
- Post-formation development involves cellular rearrangement, thickening of intercellular septa, and cell isolation, not increased pneumatization.
- Structural variations across different ages are linked to the intensity of osteogenic processes in cranial bones, particularly the temporal bone.
Conclusions:
- The mastoid process exhibits distinct developmental phases, with final pneumatization achieved in late childhood.
- Subsequent structural modifications are qualitative rather than quantitative, reflecting underlying osteogenic activity.
- These findings provide a baseline for understanding normal mastoid process development in pediatric populations.
Abstract:
The structure of the mastoid process of the temporal bone was studied in 138 total preparations obtained from children who had died of different causes except otogenic diseases at the age of from 1 to 16. The final formation of the pneumatic part of the mastoid process was found to occur at the age of 8--12. Further differentiation of the mastoid process structure occurs without an increase of pneumatization and is characterized by rearrangement of the cellulae mastoideae towards the thickening of intercellular septa and isolation of cells. Variants in the structure of the mastoid process in every children age are likely to depend on the intensity of the osteogenic process taking place in criminal bones, in the temporal bone in particular.